CN114095591A

CN114095591A - Button, card hold in palm, camera decoration and mobile terminal

Info

Publication number: CN114095591A
Application number: CN202010858948.6A
Authority: CN
Inventors: 王咏超; 徐鑫; 李建铭; 缑城; 陈弋凌
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2022-02-25
Also published as: WO2022042239A1

Abstract

The application provides a button, card hold in the palm, camera decoration and mobile terminal. The integrated medium resonance antenna who is used as the millimeter wave antenna in the structure such as button, card support and camera decoration, the relative mobile terminal's of structure frame or shell parts such as back lid expose, form the certain distance between medium resonance antenna and the casing, and the structure that is used for wrapping up medium resonance antenna in the structure adopts the low dielectric constant material, therefore the casing is less to the directional influence of millimeter wave beam, the millimeter wave beam can cover required direction, beam pointing error is less, the antenna performance of millimeter wave antenna has been improved.

Description

Button, card hold in palm, camera decoration and mobile terminal

Technical Field

The embodiment of the application relates to the technical field of mobile communication, in particular to a key, a card support, a camera decoration and a mobile terminal.

Background

At present, a fifth generation mobile communication technology (5th generation wireless systems, 5G) antenna (for example, a millimeter wave antenna), a wireless fidelity (Wi-Fi) antenna, a Global Positioning System (GPS) antenna, a bluetooth (bluetooth) antenna, and other multiple antennas are integrated in a mobile terminal, so as to meet communication requirements in different usage scenarios.

In a mobile terminal using a frame and a rear cover, antennas are generally arranged on the inner side of the frame or the inner side of the rear cover, and then a slot is formed in the frame or the rear cover to solve the problem of signal shielding. However, the frame easily causes the millimeter wave beam of the millimeter wave antenna to point in the direction required for deviation, and a large beam pointing error is generated, so the antenna performance of the millimeter wave antenna is poor.

Disclosure of Invention

An object of the application is to provide a button, card hold in the palm, camera decoration and mobile terminal. The medium resonance antenna used as the millimeter wave antenna is integrated in the structural parts such as the key, the card support and the camera decoration, the structural parts are exposed relative to the frame of the mobile terminal or the shell parts such as the rear cover, a certain distance is formed between the medium resonance antenna and the shell, so that the influence of the shell on the direction of the millimeter wave beam is small, the millimeter wave beam can cover the required direction, the beam direction error is small, and the antenna performance of the millimeter wave antenna is improved.

In order to achieve the technical purpose, the following technical scheme is adopted in the application:

in a first aspect, the present application provides a key, which may be applied to a mobile terminal. The key comprises a circuit board, a dielectric resonance antenna and a keycap. The dielectric resonant antenna is fixed on the circuit board and electrically connected with the circuit board. The dielectric resonator antenna may be used as a millimeter wave antenna, and for example, the dielectric resonator antenna may operate in a frequency band range of 24.25GHz to 29.5GHz, 37GHz to 43.5 GHz. The keycap is fixed on the circuit board and covers the dielectric resonant antenna. The keycaps are made of low-dielectric-constant materials so as to allow electromagnetic waves to pass through. Wherein the dielectric constant of the keycap is less than or equal to 6.

In this application, the dielectric resonator antenna is integrated in the button, according to the antenna radiation principle, the radiation direction of receiving and dispatching the electromagnetic wave of dielectric resonator antenna points to the one side far away from the circuit board, because the key cap can not produce the shielding to the electromagnetic wave, therefore dielectric resonator antenna has the antenna performance of preferred. In addition, because the keycap wraps the dielectric resonant antenna, when the key is installed on other structures, the keycap can isolate the dielectric resonant antenna from other structures, particularly metal structures, so that the interference of other structures on the dielectric resonant antenna is reduced.

For example, the key may be inserted into a key hole of a frame of the mobile terminal. Because the keycap wraps the dielectric resonant antenna, a certain distance is formed between the dielectric resonant antenna and the frame. The keycap is exposed out of the frame part, the dielectric resonant antenna is not shielded by the frame and forms a certain distance with the frame, and the keycap allows electromagnetic waves to pass through, so that the influence of the keycap and the frame on the orientation of a millimeter wave beam transmitted and received by the dielectric resonant antenna is small, the millimeter wave beam can cover the required direction, the orientation error of the beam is small, and the antenna performance of the millimeter wave antenna is improved. Meanwhile, the frame of the mobile terminal does not need to be additionally slotted, so that the millimeter wave antenna does not influence the product appearance design of the mobile terminal, and the appearance integrity of the mobile terminal is better.

In one possible implementation manner, the number of the dielectric resonator antennas is multiple, and the multiple dielectric resonator antennas are arranged in an array. The plurality of dielectric resonance antennas arranged in an array form the array antenna, so that the problem of scattering of high-frequency electromagnetic waves during millimeter wave use can be reduced, the directivity of a radiation field can be enhanced and improved, and the strength of the radiation field can be enhanced. Wherein the distance between two adjacent dielectric resonator antennas may be about half a wavelength.

In one possible implementation, the keycap is made of a plastic material. In other possible implementations, the keycaps may also be made of glass material.

In one possible implementation, the key cap has a top surface and a peripheral side surface, the top surface of the key cap is located on a side of the dielectric resonator antenna facing away from the circuit board, and the peripheral side surface of the key cap is connected to a periphery of the top surface of the key cap. The key also comprises a non-metal coating which is fixed on the keycap and covers the top surface of the keycap and the peripheral side surface of the keycap.

In this implementation, the non-metal coating can be used for protecting the keycap, and the signal receiving and transmitting of the dielectric resonant antenna can not be influenced. For example, the non-metal plating layer may have the same or similar color as the appearance surface of the bezel of the mobile terminal, and both may have the same color system, so as to improve the appearance consistency and the aesthetic property of the mobile terminal.

In a possible implementation manner, the dielectric resonator antenna comprises a non-metal dielectric block and two feed ports located on the surface of the non-metal dielectric block, the two feed ports are arranged at intervals, the non-metal dielectric block is fixed on the circuit board, and the two feed ports are electrically connected with the circuit board to form the dual-polarized dielectric resonator antenna. Wherein two polarization directions of the dual-polarized dielectric resonator antenna are orthogonal, for example, the two polarization directions are horizontal and vertical, respectively, or the two polarization directions are +45 ° and-45 °, respectively. The dual-polarized dielectric resonant antenna has large communication capacity.

In a possible implementation manner, the dielectric resonator antenna further includes a metal post, and the metal post is embedded in the non-metal dielectric block. Wherein the metal posts are not grounded. Illustratively, the dielectric resonator antenna can form two resonant frequency bands, wherein a low-frequency resonant frequency band of the two resonant frequency bands is mainly generated by exciting a non-metallic dielectric block by two feed ports, and a high-frequency resonant frequency band is mainly generated by inductive loading of a metal column. In short, the arrangement of the metal column can increase and generate a new resonant frequency band, and increase the coverage frequency band of the dielectric resonant antenna, so that the bandwidth of the dielectric resonant antenna is increased. In addition, the metal column can also increase the isolation of the two feed ports. Wherein, the two resonance frequency bands can also be combined into one wide frequency band.

In a possible implementation mode, a regulating hole is arranged in the nonmetal medium block, and a metal layer is arranged on the hole wall of the regulating hole. The dielectric resonant antenna generates a new resonant frequency band by inductive loading of the metal layer, the coverage frequency band of the dielectric resonant antenna is increased, and the bandwidth is expanded. The resonant frequency band generated by the metal layer loading is highly influenced by the metal layer.

In one possible implementation, the circuit board includes a circuit board antenna and an antenna feed line, and both the circuit board antenna and the dielectric resonator antenna are electrically connected to the antenna feed line. In this implementation manner, the circuit board antenna and the dielectric resonant antenna jointly form an antenna module, the circuit board antenna and the dielectric resonant antenna are connected to the same antenna feeder, and the circuit board antenna and the dielectric resonant antenna respectively form different resonant frequency bands, so that the antenna module obtains at least two resonant frequency bands to have a larger bandwidth. Wherein, the two resonance frequency bands can also be combined into one wide frequency band.

In a possible implementation manner, the key further includes a radio frequency chip, the radio frequency chip is fixed on a side of the circuit board opposite to the dielectric resonant antenna, and the radio frequency chip is electrically connected to the circuit board. In this implementation manner, the radio frequency chip is electrically connected to the feed port of the dielectric resonator antenna through the circuit board to receive and transmit radio frequency signals. At this time, the transmission path of the radio frequency signal is shorter, which is beneficial to improving the antenna performance of the dielectric resonance antenna.

In a possible implementation manner, the key further includes a flexible circuit board, one end of the flexible circuit board is electrically connected to the circuit board, and the other end of the flexible circuit board is provided with an electrical connector. The external device transmits radio frequency signals with the dielectric resonant antenna through the electric connector and the flexible circuit board.

In a possible implementation mode, the circuit board is provided with the hole of dodging, and the key cap is fixed in the circuit board and wraps up medium resonance antenna including pressing the portion and triggering the portion including pressing the portion according to the splenium, and the one end of triggering the portion is fixed in presses the portion, and the other end of triggering the portion is through dodging the relative circuit board protrusion in hole. The mobile terminal can further comprise a key board positioned on the inner side of the frame and a switch fixed on the key board, the key board can be a circuit board, and the switch is electrically connected with the key board. The trigger part of the keycap is arranged right opposite to the switch, and when a user presses the pressing part of the keycap on the outer side of the frame, the trigger part abuts against the switch to trigger the switch. The keys, the key board and the switches form a key module together.

In a second aspect, the present application further provides a card holder, which can be applied to a mobile terminal. A card holder comprises a door plate, a tray, a circuit board and a dielectric resonant antenna. The tray is fixed in one side of door plant, and the tray is equipped with the draw-in groove. The dielectric resonant antenna is fixed on the circuit board and electrically connected with the circuit board. The dielectric resonator antenna may be used as a millimeter wave antenna. The dielectric resonator antenna is embedded in the door plate, and the circuit board is positioned on one side of the dielectric resonator antenna facing the tray. The door panel is made of a low dielectric constant material to allow electromagnetic waves to pass through. Wherein the dielectric constant of the door panel is less than or equal to 6.

In this application, the integration of dielectric resonator antenna is in the card holds in the palm, according to the antenna radiation principle, and the radiation direction point of dielectric resonator antenna receiving and dispatching electromagnetic wave is far away from one side of circuit board, because the door plant can not produce the shielding to the electromagnetic wave, therefore dielectric resonator antenna has the antenna performance of preferred. In addition, because door plant parcel medium resonance antenna, consequently when the card held in the palm and installs in other structures, the door plant can keep apart medium resonance antenna and other structures, especially metal construction to reduce other structures to the interference of medium resonance antenna.

For example, the card holder may be inserted into a card holder insertion hole of a frame of the mobile terminal. Because the door plant wraps up the dielectric resonator antenna, consequently form certain distance between dielectric resonator antenna and the frame. The door plate is exposed out of the frame part, the dielectric resonant antenna is not shielded by the frame and forms a certain distance with the frame, and the door plate allows electromagnetic waves to pass through, so that the door plate and the frame have small influence on the orientation of millimeter wave beams transmitted and received by the dielectric resonant antenna, the millimeter wave beams can cover the required direction, the beam orientation error is small, and the antenna performance of the millimeter wave antenna is improved. Meanwhile, the frame of the mobile terminal does not need to be additionally slotted, so that the millimeter wave antenna does not influence the product appearance design of the mobile terminal, and the appearance integrity of the mobile terminal is better.

In one possible implementation, the door panel is made of a plastic material. In other possible implementations, the door panel may also be made of a glass material.

In one possible implementation, the door plate has a top surface, and the top surface of the door plate is located on a side of the dielectric resonator antenna facing away from the circuit board. The card holds in the palm still includes non-metallic coating, and non-metallic coating is fixed in the door plant and covers the top surface of door plant.

In this implementation, the non-metal plating can be used for protecting the door panel, and the signal receiving and transmitting of the dielectric resonator antenna can not be influenced. For example, the non-metal plating layer may have the same or similar color as the appearance surface of the bezel of the mobile terminal, and both may have the same color system, so as to improve the appearance consistency and the aesthetic property of the mobile terminal.

In one possible implementation, the circuit board includes a circuit board antenna and an antenna feed line, and both the circuit board antenna and the dielectric resonator antenna are connected to the antenna feed line. In this implementation manner, the circuit board antenna and the dielectric resonant antenna jointly form an antenna module, the circuit board antenna and the dielectric resonant antenna are connected to the same antenna feeder, and the circuit board antenna and the dielectric resonant antenna respectively form different resonant frequency bands, so that the antenna module obtains at least two resonant frequency bands to have a larger bandwidth. Wherein, the two resonance frequency bands can also be combined into one wide frequency band.

In a third aspect, the present application further provides a camera decoration, which can be applied to a mobile terminal. The camera decoration comprises a decoration body, a lens, a circuit board and a dielectric resonant antenna. The decoration body is provided with a light hole, and the lens is fixed on the decoration body and covers the light hole. The dielectric resonant antenna is fixed on the circuit board and electrically connected with the circuit board. The dielectric resonator antenna may be used as a millimeter wave antenna. The dielectric resonant antenna is embedded into the decorating part body and covered by the lens, and the circuit board is positioned on one side of the dielectric resonant antenna far away from the lens. The decoration body is made of a low dielectric constant material to allow electromagnetic waves to pass through. Wherein the dielectric constant of the decoration body is less than or equal to 6.

In this application, the integration of dielectric resonator antenna is in the camera decoration, according to the antenna radiation principle, and the radiation direction of dielectric resonator antenna receiving and dispatching electromagnetic wave is directional one side far away from the circuit board, because the decoration body can not produce the shielding to the electromagnetic wave, therefore dielectric resonator antenna has the antenna performance of preferred. In addition, because medium resonance antenna is wrapped up to the decoration body, consequently when the camera decoration is installed in other structures, medium resonance antenna and other structures, especially metal construction can be kept apart to the decoration body to reduce other structures and to the interference of medium resonance antenna.

For example, the camera decoration may be inserted into a camera hole of a rear cover of the mobile terminal. Because the medium resonance antenna is wrapped up to the decoration body, consequently form certain distance between medium resonance antenna and the back lid. The relative back lid of lens exposes, and dielectric resonator antenna is located the lens below, and dielectric resonator antenna is sheltered from by the back lid and forms the certain distance with between the back lid, and the decoration body and lens allow the electromagnetic wave to pass, and consequently decoration body, lens and back lid are less to the directional influence of millimeter wave beam of dielectric resonator antenna receiving and dispatching for the millimeter wave beam can cover required direction, and beam pointing error is less, has improved millimeter wave antenna's antenna performance. Meanwhile, the rear cover of the mobile terminal does not need to be additionally slotted, so that the millimeter wave antenna does not influence the product appearance design of the mobile terminal, and the appearance integrity of the mobile terminal is better.

In one possible implementation, the trim body is made of a plastic material. In other possible implementations, the trim body may also be made of a glass material.

In a possible implementation, the camera decoration further comprises a metal ring, the metal ring is fixed on the decoration body and arranged around the lens, and the dielectric resonant antenna and the metal ring are arranged at intervals. In this implementation, the metal ring can protect the lens to reduce the risk that the lens is broken because of impact, collision, etc. And, because the metal loop encircles the lens setting, the dielectric resonator antenna is located the lens below and with the metal loop mutual interval, therefore the setting of metal loop also can not influence dielectric resonator antenna receiving and dispatching signal. Wherein, the metal ring can be fixed on the decoration body in an adhesive mode.

In a fourth aspect, the present application further provides a mobile terminal. The mobile terminal comprises a frame and any one of the keys. The frame adopts metal material, and the frame is equipped with the button hole. The button is worn to locate the key hole, and the outward appearance facial part protrusion of the relative frame of key cap.

In this application, dielectric resonator antenna can be used as millimeter wave antenna, and dielectric resonator antenna is integrated in the button, and the relative frame part of key cap exposes, dielectric resonator antenna not sheltered from by the frame and form the certain distance with between the frame, and the key cap allows the electromagnetic wave to pass, therefore key cap and frame are less to the directional influence of millimeter wave beam of dielectric resonator antenna receiving and dispatching for the millimeter wave beam can cover required direction, and beam pointing error is less, has improved millimeter wave antenna's antenna performance. The keys can be used as power keys (or called power-on keys), volume keys, photographing keys and other function keys of the mobile terminal.

In a fifth aspect, the present application further provides a mobile terminal. The mobile terminal comprises a frame, a card seat positioned on the inner side of the frame and any card support. The frame adopts metal material, and the frame is equipped with card and holds in the palm the jack. The door plant is located the card and holds in the palm the jack, and the relative frame of door plant exposes. The tray is inserted into the card holder.

In this application, dielectric resonator antenna can be used as millimeter wave antenna, and dielectric resonator antenna is integrated in the card holds in the palm, and the relative frame of door plant exposes, and dielectric resonator antenna is not sheltered from by the frame and form the certain distance between with the frame, and the door plant allows the electromagnetic wave to pass, and consequently door plant and frame are less to the directional influence of millimeter wave beam of dielectric resonator antenna receiving and dispatching for the millimeter wave beam can cover required direction, and beam pointing error is less, has improved millimeter wave antenna's antenna performance. The tray of the card tray may be used to mount one or more Subscriber Identity Modules (SIMs), one or more memory cards, and the like.

In a possible implementation manner, the appearance surface of the door panel is flush with the appearance surface of the frame, or the appearance surface of the door panel is retracted relative to the appearance surface of the frame but is not shielded.

In a possible implementation manner, the color of the appearance surface of the door panel is the same as or similar to the color of the appearance surface of the frame, and the two colors can adopt the same color system, so as to improve the appearance consistency and the aesthetic property of the mobile terminal.

In a sixth aspect, the present application further provides a mobile terminal. The mobile terminal comprises a rear cover and the camera decorating part, the rear cover is made of metal materials, a camera shooting hole is formed in the rear cover, the camera decorating part penetrates through the camera shooting hole, and a lens of the camera decorating part is exposed out of the rear cover relatively.

In this application, dielectric resonator antenna can be used as millimeter wave antenna, and dielectric resonator antenna is integrated in the camera decoration, and the relative back lid of lens exposes, and dielectric resonator antenna is located the lens below, consequently dielectric resonator antenna not sheltered from by the back lid and with back cover between form the certain distance, the influence that the back lid was directional to the millimeter wave beam of dielectric resonator antenna receiving and dispatching is less for the millimeter wave beam can cover required direction, and beam pointing error is less, has improved millimeter wave antenna's antenna performance.

In a possible implementation mode, the camera decorating part is provided with a decorating part body and a metal ring which penetrate through the camera shooting hole, and the metal ring protrudes out of the appearance surface of the back cover.

In a seventh aspect, the present application further provides a mobile terminal. The mobile terminal comprises a shell and a structural member. The shell is made of metal materials and is provided with a through hole. The structural member penetrates through the through hole and is exposed relative to the shell. The structural member comprises a body and a dielectric resonant antenna embedded in the body, and a certain distance is formed between the dielectric resonant antenna and the shell. The dielectric constant of the body is less than or equal to 6. The dielectric resonator antenna is used for transmitting electromagnetic waves to the outer side of the shell and/or receiving electromagnetic waves from the outer side of the shell.

In this application, dielectric resonator antenna can be used as millimeter wave antenna, dielectric resonator antenna is integrated in the structure, the relative casing part of structure exposes, form the certain distance between dielectric resonator antenna and the casing, the body of structure allows the electromagnetic wave to pass, make dielectric resonator antenna's receiving and transmitting signal not sheltered from and not sheltered from by the casing by the body, thereby solve because the casing covers and lead to the great problem of millimeter wave beam pointing error, with under the condition that does not influence mobile terminal outward appearance, make the millimeter wave beam cover required direction, millimeter wave antenna has the antenna performance of preferred.

In the foregoing mobile terminal, because the dielectric resonator antenna is integrated in the key, the card holds in the palm, camera decoration spare and other structures, the dielectric resonator antenna need not additionally to occupy mobile terminal's inner space to mobile terminal's casing need not additionally to crack, therefore millimeter wave antenna can not influence mobile terminal's product appearance design, and mobile terminal's appearance integrality is preferred. In addition, the key, the card support, the camera decoration and other structural components are generally positioned at positions which cannot be held by a user in the mobile terminal, so that the risk of 'death holding' is low, the influence of a human body on the antenna can be reduced, and better radiation is realized. It will be appreciated that the dielectric resonator antenna may also be integrated in other structural components of the mobile terminal.

Drawings

Fig. 1 is a schematic structural diagram of a mobile terminal provided in an embodiment of the present application in some embodiments;

fig. 2 is a schematic structural view of the mobile terminal shown in fig. 1 at another angle;

FIG. 3 is a schematic structural diagram of a key provided in an embodiment of the present application in some embodiments;

FIG. 4 is a schematic cross-sectional view of the key shown in FIG. 3 taken along line A-A;

FIG. 5 is a schematic view of a portion of the key cap of FIG. 4;

fig. 6 is a partial structural diagram of the mobile terminal shown in fig. 1;

fig. 7 is a schematic view of a matching structure of a metal frame and a dielectric resonator antenna according to an embodiment of the present application;

FIG. 8 is a schematic view of the structure shown in FIG. 7 taken along line B-B;

fig. 9 is a graph of S-parameter of the dielectric resonator antenna obtained by simulation of the structure shown in fig. 7;

fig. 10 is a schematic diagram of an electric field of a dielectric resonator antenna obtained by simulating the structure shown in fig. 7;

FIG. 11 is a second schematic diagram of the electric field of the dielectric resonator antenna simulated from the structure shown in FIG. 7;

FIG. 12 is a 28GHz gain section pattern of the dielectric resonator antenna simulated by the structure shown in FIG. 7;

fig. 13 is a gain pattern obtained by simulation of the 1 x 2 array of dielectric resonator antennas of fig. 4;

fig. 14 is a horizontal polarization pattern obtained by simulation of the 1 x 2 array of dielectric resonator antennas shown in fig. 4;

fig. 15 is a vertical polarization pattern obtained by simulation of the 1 x 2 array of dielectric resonator antennas of fig. 4;

fig. 16 is a schematic structural diagram of a dielectric resonator antenna provided by the present application in further embodiments;

fig. 17 is a schematic diagram of a dielectric resonator antenna provided herein in further embodiments;

fig. 18 is a schematic diagram of a dielectric resonator antenna provided herein in further embodiments;

fig. 19 is a schematic diagram of a dielectric resonator antenna provided herein in further embodiments;

fig. 20 is a schematic diagram of a dielectric resonator antenna provided herein in further embodiments;

FIG. 21 is a schematic diagram of an internal structure of a key provided in an embodiment of the present application in another embodiment;

FIG. 22 is a schematic diagram of an internal structure of a key provided in an embodiment of the present application in further embodiments;

FIG. 23 is a schematic diagram of an internal structure of a key provided in an embodiment of the present application in further embodiments;

fig. 24 is a schematic view of an internal structure of a card holder according to an embodiment of the present disclosure;

FIG. 25 is a schematic view of the internal structure of the card holder of FIG. 24 at another angle;

fig. 26 is a partial structural diagram of the mobile terminal shown in fig. 1;

FIG. 27 is a schematic diagram of an internal structure of a card holder provided in an embodiment of the present application in another embodiment;

FIG. 28 is a schematic diagram of an internal structure of a card holder provided in an embodiment of the present application in further embodiments;

fig. 29 is a schematic internal structure view of a camera decoration according to an embodiment of the present application;

fig. 30 is a top view of a dielectric resonator antenna of the camera trim piece of fig. 29;

fig. 31 is a partial structural view of the mobile terminal shown in fig. 1;

FIG. 32 is a schematic view of an internal structure of a camera trim piece provided in accordance with an embodiment of the present application in further embodiments;

fig. 33 is a schematic structural diagram of an antenna module according to an embodiment of the present application;

fig. 34 is a schematic cross-sectional view of the antenna module of fig. 33 taken along line C-C;

fig. 35 is a schematic diagram of the internal structure of the antenna module of fig. 33 in one possible embodiment;

FIG. 36 is an echo curve and isolation curve plot obtained from a simulation performed by the antenna module of FIG. 35;

fig. 37 is a first diagram of electric fields obtained by simulation of the antenna module shown in fig. 35;

fig. 38 is a second schematic diagram of the electric field obtained by simulation of the antenna module shown in fig. 35;

FIG. 39 is a schematic view of the electric field of FIG. 38 at another angle;

fig. 40 is a first polarization tangential plane pattern at 24.5HGz obtained by simulation of the antenna module of fig. 35;

fig. 41 is a second polarization tangential plane pattern at 24.5HGz obtained by simulation of the antenna module of fig. 35;

fig. 42 is a first polarization tangential plane pattern at 37.5HGz obtained by simulation of the antenna module of fig. 35;

fig. 43 is a second polarization tangential plane pattern at 37.5HGz obtained from simulation of the antenna module of fig. 35;

fig. 44 is a first polarization tangential plane pattern at 43.5HGz obtained by simulation of the antenna module of fig. 35;

fig. 45 is a second polarization tangential plane pattern at 43.5HGz obtained from simulation of the antenna module of fig. 35.

Detailed Description

The following embodiments of the present application will be described with reference to the drawings of the embodiments of the present application.

In the description of the embodiments of the present application, unless otherwise stated, "and/or" in the text is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In the description of the embodiments of the present application, "a plurality" means two or more than two. In the description of the embodiments of the present application, the range of a to B includes the endpoints a and B.

The directional terms used in the embodiments of the present application, such as "upper," "lower," "front," "rear," "left," "right," "inner," "outer," "side," "top," "bottom," and the like, refer only to the orientation of the figures, and thus, are used for better and clearer illustration and understanding of the embodiments of the present application, rather than to indicate or imply that the referenced device or element must be in a particular orientation, constructed and operated in a particular orientation, and therefore should not be considered as limiting the embodiments of the present application.

The application provides a mobile terminal, which comprises a shell and a structural part. The housing may be a part of a housing of the mobile terminal, such as a bezel or a rear cover of the mobile terminal. The shell is made of metal materials. The housing may also be a housing of the mobile terminal. The shell is provided with a through hole, and the structural member penetrates through the through hole and is exposed relative to the shell. The structural member includes a body and a Dielectric Resonant Antenna (DRA) embedded in the body. The body is made of a low dielectric constant material, for example, the dielectric constant of the body is less than or equal to 6. A certain distance is formed between the dielectric resonance antenna and the shell, and the dielectric resonance antenna is used for transmitting electromagnetic waves to the outer side of the shell and/or receiving the electromagnetic waves on the outer side of the shell.

It is understood that in the embodiment of the present application, the component a is "exposed" with respect to the component B, which means that the component a is visible from the outside of the component B, and the component a is not completely shielded by the component B. For example, the case where the appearance surface of the component a is protruded with respect to the appearance surface of the component B may be included, the case where the appearance surface of the component a is flush with the appearance surface of the component B may be included, or the case where the appearance surface of the component a is retracted with respect to the appearance surface of the component B but is not blocked may be included.

In some embodiments, the structure comprises a key. The key comprises a key cap and a dielectric resonance antenna embedded in the key cap, wherein the key cap is made of a low dielectric constant material. The frame of the mobile terminal is made of metal materials, and the frame is provided with key holes. The button is worn to locate the key hole, and the outward appearance facial part protrusion of the relative frame of key cap.

In some embodiments, the structure comprises a card holder. The card holds in palm including door plant, tray and dielectric resonance antenna, and dielectric resonance antenna inlays locates the door plant, and the door plant adopts low dielectric constant material. The frame of mobile terminal adopts metal material, and the frame is equipped with the card and holds in the palm the jack, and the card holds in the palm the grafting card and holds in the palm the jack, and the door plant is located the card and holds in the palm the jack, exposes relative frame, and the tray inserts the cassette that is located the frame inboard.

In some embodiments, the structural member comprises a camera trim. The camera decoration includes the decoration body, is fixed in the lens of decoration body and inlays the dielectric resonance antenna of locating the decoration body, and dielectric resonance antenna is located the lens below, and the decoration body adopts low dielectric constant material. The rear cover of the mobile terminal is made of metal materials, the rear cover is provided with a camera shooting hole, the camera decorating part penetrates through the camera shooting hole, and the lens is exposed out of the rear cover relatively.

In the foregoing embodiment, since the dielectric resonator antenna is integrated in the key, the card holder, the camera decoration, and other structural components, the dielectric resonator antenna does not need to occupy the internal space of the mobile terminal additionally, and the housing of the mobile terminal does not need to be slotted additionally, so that the millimeter wave antenna does not affect the product appearance design of the mobile terminal, and the appearance integrity of the mobile terminal is better. In addition, the key, the card support, the camera decoration and other structural components are generally positioned at positions which cannot be held by a user in the mobile terminal, so that the risk of 'death holding' is low, the influence of a human body on the antenna can be reduced, and better radiation is realized. It will be appreciated that the dielectric resonator antenna may also be integrated in other structural components of the mobile terminal.

Referring to fig. 1 and fig. 2 together, fig. 1 is a schematic structural diagram of a mobile terminal 100 according to an embodiment of the present disclosure in some embodiments, and fig. 2 is a schematic structural diagram of the mobile terminal 100 shown in fig. 1 at another angle. The mobile terminal 100 may be a mobile phone, a tablet, a wearable device, or other terminal devices. In the embodiment of the present application, the mobile terminal 100 is a mobile phone as an example.

In some embodiments, the mobile terminal 100 may include a housing 101, a display screen 102, a card holder 103, a card socket 104, a power key 105, a volume key 106, a motherboard 107, a battery 108, a speaker 109, a Universal Serial Bus (USB) interface 1010, a microphone 1011, an earphone interface 1012, a camera module 1013, a camera garnish 1014, and the like. It is to be understood that the illustrated structure of the embodiment of the present invention does not constitute a specific limitation to the mobile terminal 100. In other embodiments of the present application, the mobile terminal 100 may include more or fewer components than shown, or some components may be combined, some components may be split, or a different arrangement of components.

The housing 101 includes a frame 101a and a rear cover 101 b. The back cover 101b and the display screen 102 are respectively fixed on the two opposite sides of the frame 101 a. The rear cover 101b and the bezel 101a may be integrally formed by assembling or may be integrally formed. The housing 101 may further include a middle plate (not shown), the middle plate is located inside the frame 101a, and the middle plate and the frame 101a may form an integrated structure through an assembling manner or an integral forming manner, and both form a middle frame. Other components of the mobile terminal 100 may be secured to the middle frame and/or the rear cover 101 b.

The frame 101a and/or the rear cover 101b may be made of a metal material. It should be understood that the solution of using the metal material for the frame 101a includes: the frame 101a is made of a metal material as a whole, or a majority of the structure of the frame 101a is made of a metal material, and a minority of the structure may be made of other materials. For example, the frame 101a may be provided with one or more antenna slots, the plurality of antenna slots may separate the frame 101a into a plurality of metal segments independent of each other, and the plurality of antenna slots may be filled with a non-metal material. The scheme of using the metal material for the rear cover 101b includes: the rear cover 101b is made of a metal material as a whole, or a majority of the structure of the rear cover 101b is made of a metal material, and a minority of the structure of the rear cover 101b may be made of other materials. In other embodiments, the frame 101a may also be made of non-metal materials such as plastic and ceramic. In other embodiments, the rear cover 101b may be made of non-metal materials such as plastic, ceramic, glass, etc.

In some embodiments, as shown in fig. 1, the bezel 101a is provided with a card-holder jack 101c, a power key hole 101d, a speaker hole 101e, a USB hole 101f, a microphone hole 101g, and an earphone jack 101 h. The frame 101a may also be provided with a volume key hole (not shown). As shown in fig. 2, the rear cover 101b is provided with an imaging hole 101 i. The card holder 103, the card holder 104, the power key 105, the volume key 106, the main board 107, the battery 108, the speaker 109, the USB interface 1010, the microphone 1011, the earphone interface 1012, the camera module 1013, the camera ornament 1014, and the like of the mobile terminal 100 are mounted inside the housing 101.

As shown in fig. 1, a part of the structure of the card holder 103 is located in the card holder insertion hole 101c and is exposed relative to the frame 101 a. The portion of the card holder 103 located inside the housing 101 can be inserted into the card holder 104. The card tray 103 may be used to mount a memory card, a Subscriber Identity Module (SIM), and the like. The power key 105 is inserted into the power key hole 101d, and a part of the structure of the power key 105 is exposed to the frame 101 a. The speaker 109 is used to convert an audio electric signal into a sound signal. The speaker 109 is disposed corresponding to the speaker hole 101e to emit a sound signal through the speaker hole 101 e. The mobile terminal 100 can listen to music through the speaker 109, or listen to a hands-free call, or the like. The USB interface 1010 is an interface conforming to the USB standard specification, such as a Mini USB interface, a Micro USB interface, a USB Type C interface, and the like. The USB interface 1010 is disposed corresponding to the USB hole 101f, and the external structure is plugged into the USB interface 1010 through the USB hole 101 f. The USB interface 1010 may be used to connect a charger to charge the mobile terminal 100, and may also be used to transmit data between the mobile terminal 100 and peripheral devices. The USB interface 1010 may also be used to connect to a headset through which audio may be played. The USB interface 1010 may also be used to connect other electronic devices, such as AR devices and the like. The microphone 1011 is used to convert a sound signal into an electric signal. The microphone 1011 is disposed corresponding to the microphone hole 101g to receive a sound signal through the microphone hole 101 g. When making a call or transmitting voice information, a user can input a voice signal to the microphone 1011 by making a sound near the microphone 1011 through the mouth of the user. The earphone interface 1012 is arranged corresponding to the earphone jack 101h, and the external structure is connected with the earphone interface 1012 through the earphone jack 101 h. As shown in fig. 2, the camera ornament 1014 is inserted into the imaging hole 101i, and a part of the camera ornament 1014 is exposed to the rear cover 101 b. Camera module 1013 corresponds camera decoration 1014 setting to gather light through the printing opacity part on camera decoration 1014, realize shooing.

The motherboard 107 may include one or more Printed Circuit Boards (PCBs), among others. A processor (not shown) is provided on the motherboard 107. The processor couples various functional modules of the mobile terminal 100. The processor may include one or more processing units, such as: the processor may include an Application Processor (AP), a modem processor, a Graphics Processing Unit (GPU), an Image Signal Processor (ISP), a controller, a memory, a video codec, a Digital Signal Processor (DSP), a baseband processor, and/or a neural-Network Processing Unit (NPU), etc. The different processing units may be separate devices or may be integrated into one or more processors. The battery 108 is electrically connected to the main board 107 and each functional module of the mobile terminal 100, and is used for supplying power to the mobile terminal 100.

Referring to fig. 3 and 4 together, fig. 3 is a schematic structural diagram of a key 10 according to an embodiment of the present disclosure, and fig. 4 is a schematic cross-sectional diagram of the key 10 shown in fig. 3 taken along line a-a. The key 10 shown in this embodiment can be applied to the mobile terminal 100, and used as a function key such as a power key 105 and a volume key 106.

In some embodiments, key 10 includes circuit board 1, dielectric resonator antenna 2, and keycap 3. The dielectric resonator antenna 2 is fixed to the circuit board 1 and electrically connected to the circuit board 1. The keycap 3 is fixed on the circuit board 1 and covers the dielectric resonant antenna 2. That is, the dielectric resonator antenna 2 is provided embedded in the key cap 3. The dielectric resonator antenna 2 is used for transmitting and receiving electromagnetic waves. The dielectric resonator antenna 2 may be used as a millimeter wave antenna, and for example, the dielectric resonator antenna 2 may operate in a frequency band range of 24.25GHz to 29.5GHz, 37GHz to 43.5 GHz. The key cap 3 is made of a low dielectric constant material to allow electromagnetic waves to pass through.

In this embodiment, according to the antenna radiation principle, the radiation direction of the dielectric resonator antenna 2 for receiving and transmitting the electromagnetic wave is directed to the side away from the circuit board 1, and since the keycap 3 does not shield the electromagnetic wave, the dielectric resonator antenna 2 has better antenna performance. In addition, since the key cap 3 wraps the dielectric resonator antenna 2, when the key 10 is mounted on another structure, the key cap 3 can isolate the dielectric resonator antenna 2 from other structures, especially from a metal structure, so as to reduce interference of the other structures on the dielectric resonator antenna 2.

Illustratively, the dielectric constant of the keycap 3 is less than or equal to 6. The dielectric constant of the keycap 3 can be between 2 and 6, and a smaller value can be adopted as much as possible. For example, the key cap 3 may be made of plastic, glass, or the like. The keycap 3 can wrap the dielectric resonant antenna 2 and be fixed with the dielectric resonant antenna 2 through a plastic packaging mode. The circuit board 1 is a structural member including at least one non-conductive substrate and at least one conductive layer.

The millimeter wave frequency band in which the dielectric resonator antenna 2 may operate in the embodiment of the present application may include but is not limited to: frequency band n257, 26.5GHz to 29.5 GHz; frequency band n258, 24.25GHz to 27.5 GHz; frequency band n259, 39.5GHz to 43.5 GHz; frequency band n260, 37.0GHz to 40.0 GHz; the frequency band n261, 27.5GHz to 28.35 GHz.

In some embodiments, the circuit board 1 may be provided with an escape hole 11. The avoidance hole 11 can be formed in the middle of the circuit board 1 and is a through hole structure with a complete hole wall; the avoiding hole 11 may also be formed on the periphery of the circuit board 1, and is a notch structure with an incomplete hole wall. The keycap 3 comprises a pressing portion 31 and a triggering portion 32, the pressing portion 31 is fixed on the circuit board 1 and wraps the dielectric resonant antenna 2, one end of the triggering portion 32 is fixed on the pressing portion 31, and the other end of the triggering portion 32 protrudes out of the circuit board 1 through the avoiding hole 11. The circuit board 1 may be a hard circuit board or a flexible circuit board.

In some embodiments, the key 10 may also include a flexible circuit board 12. One end of the flexible circuit board 12 is electrically connected to the circuit board 1, and the other end is provided with an electrical connector 13. The electrical connector 13 is used to electrically connect with other components of the mobile terminal 100. Illustratively, the mobile terminal 100 may include a radio frequency chip (not shown) for modulating a radio frequency signal or demodulating a radio frequency signal. The radio frequency chip is fixed on the main board 107 and electrically connected with the processor. The electrical connector 13 of the key cap 3 is electrically connected with the radio frequency chip. In other embodiments, the processor comprises a radio frequency processing module for processing radio frequency signals, the electrical connector 13 of the keycap 3 is electrically connected with the processor, and the mobile terminal 100 may not be provided with a radio frequency chip. For example, the flexible circuit board 12 and the circuit board 1 may be connected by assembling, or may be an integrated structure, for example, the flexible circuit board 12 and the circuit board 1 are respectively a part of a rigid-flex circuit board. The present application does not strictly limit the specific structures, connection relationships, and the like of the flexible circuit board 12 and the circuit board 1.

In some embodiments, the dimensions of the dielectric resonator antenna 2 may be less than or equal to within 2mm long by 2mm wide by 4mm high to better embed in the small volume of the keycap 3.

In some embodiments, the dielectric resonator antenna 2 includes a non-metal dielectric block 21 and two feeding ports 22 located on a surface of the non-metal dielectric block 21, and the two feeding ports 22 are spaced apart from each other. Wherein, the non-metal dielectric block 21 is made of a high dielectric constant material, and the dielectric constant of the non-metal dielectric block 21 can be in the range of 8 to 100, for example, 10 to 30. Illustratively, the non-metallic dielectric block 21 may be made of a ceramic material, such as a low-loss microwave dielectric ceramic (microwave dielectric ceramic), and may be, but is not limited to, a composite perovskite structure type material. Microwave dielectric ceramics refer to ceramics which are applied to microwave frequency band circuits as dielectric materials and perform one or more functions. The non-metal dielectric block 21 is fixed on the circuit board 1, and both the two feeding ports 22 are electrically connected with the circuit board 1 to form the dual-polarized dielectric resonant antenna. Wherein two polarization directions of the dual-polarized dielectric resonator antenna are orthogonal, for example, the two polarization directions are horizontal and vertical, respectively, or the two polarization directions are +45 ° and-45 °, respectively. The dual-polarized dielectric resonant antenna has large communication capacity.

In some embodiments, the dielectric resonator antenna 2 may further include a metal pillar 23, and the metal pillar 23 is embedded in the non-metal dielectric block 21. Wherein the metal column 23 is not grounded. Illustratively, the dielectric resonator antenna 2 can form two resonant frequency bands, of which the low-frequency resonant frequency band is mainly generated by exciting the non-metallic dielectric block 21 through the two feeding ports 22, and the high-frequency resonant frequency band is mainly generated by inductive loading of the metal posts 23. In short, the metal posts 23 can generate a new resonant frequency band, and increase the coverage frequency band of the dielectric resonator antenna 2, thereby increasing the bandwidth of the dielectric resonator antenna 2. In addition, the metal posts 23 can also increase the isolation of the two feed ports 22. Wherein, the two resonance frequency bands can also be combined into one wide frequency band.

In some embodiments, the feed port 22 of the dielectric resonator antenna 2 may be a patch member. Illustratively, the feeding port 22 is L-shaped, the feeding port 22 includes a first portion 22a and a second portion 22b connected to the first portion 22a, the first portion 22a is fixed to a side surface of the non-metallic dielectric block 21, and the second portion 22b is bent with respect to the first portion 22a and extends in a direction away from the non-metallic dielectric block 21. The second portion 22b is fixed to the circuit board 1. Wherein the second portion 22b may be soldered to the circuit board 1 or connected to the circuit board 1 by a conductive paste to be electrically connected to the circuit board 1. In other embodiments, the feed port 22 of the dielectric resonator antenna 2 and the circuit board 1 may be connected by a probe or other means.

Referring to fig. 5, fig. 5 is a schematic view of a partial structure of the key cap 3 shown in fig. 4. Fig. 5 illustrates a connection structure of the dielectric resonator antenna 2 of the key cap 3 and the circuit board 1.

In some embodiments, the circuit board 1 may be a multilayer board, such as a 4-layer board, i.e. having 4 conductive layers. The circuit board 1 has a power feed line 1a, and the power feed line 1a is electrically connected to a power feed port 22 of the dielectric resonator antenna 2 through a conductive post 1 b. Here, the circuit board 1 may further have a first ground layer 1c, and the first ground layer 1c is located on a side of the power feeding line 1a away from the dielectric resonator antenna 2. Here, the circuit board 1 may further have a second ground layer 1d, and the second ground layer 1d is located on a side of the power feeding line 1a close to the dielectric resonator antenna 2. In other embodiments, the circuit board 1 may be a double-layer board, a six-layer board, etc., and the power line and the ground layer may be arranged at different positions in the circuit board 1, which is not strictly limited in this application.

Referring to fig. 6, fig. 6 is a schematic partial structure diagram of the mobile terminal 100 shown in fig. 1. Among them, the key 10 shown in fig. 3 may be used as the power key 105 applied to the mobile terminal 100.

In some embodiments, mobile terminal 100 includes a bezel 101a and keys 10. The frame 101a is made of a metal material, and the frame 101a is provided with a key hole (i.e., a power key hole 101 d). The key 10 is inserted into the key hole, and the key cap 3 of the key 10 partially protrudes from the appearance surface 1011 of the frame 101 a. The external surface 1011 of the frame 101a is the outer surface of the frame 101a facing the outside of the mobile terminal 100. At this time, the circuit board 1 of the key 10 is located inside the frame 101 a.

In this embodiment, the dielectric resonator antenna 2 is integrated in the key 10, the key cap 3 is disposed through the key hole, and a certain distance is formed between the dielectric resonator antenna 2 and the frame 101a because the key cap 3 wraps the dielectric resonator antenna 2. The keycap 3 is partially exposed relative to the frame 101a, the dielectric resonator antenna 2 is not shielded by the frame 101a and forms a certain distance with the frame 101a, and the keycap 3 allows electromagnetic waves to pass through, so that the influence of the keycap 3 and the frame 101a on the orientation of the millimeter wave beam transmitted and received by the dielectric resonator antenna 2 is small, the millimeter wave beam can cover the required direction, the beam orientation error is small, and the antenna performance of the millimeter wave antenna is improved. Meanwhile, the frame 101a of the mobile terminal 100 does not need to be additionally slotted, so that the millimeter wave antenna does not affect the product appearance design of the mobile terminal 100, and the appearance integrity of the mobile terminal 100 is better. In other embodiments, the key 10 may also be used as a function key of the mobile terminal 100, such as a volume key 106, a photographing key, and the like.

In some embodiments, the mobile terminal 100 may further include a key sheet 1015 located inside the frame 101a and a switch 1016 fixed on the key sheet 1015, where the key sheet 1015 may be a circuit board, and the switch 1016 is electrically connected to the key sheet 1015. The trigger 32 of the key top 3 is disposed opposite to the switch 1016, and when the user presses the pressing portion 31 of the key top 3 on the outer side of the frame 101a, the trigger 32 abuts against the switch 1016 to trigger the switch 1016. The key 10, the key sheet 1015 and the switch 1016 together form a key module.

In some embodiments, the color of the key cap 3 may be the same as or similar to the color of the appearance surface 1011 of the frame 101a, and both may adopt the same color system, so as to improve the appearance consistency and the aesthetic property of the mobile terminal 100.

The influence of the metal frame on the dielectric resonator antenna 2 is explained by simulation below.

Referring to fig. 7 and 8 together, fig. 7 is a schematic view of a structure of a metal frame 200 and a dielectric resonator antenna 2 according to an embodiment of the present application, and fig. 8 is a schematic view of the structure shown in fig. 7 taken along line B-B.

In some embodiments, the metal frame 200 has a rectangular mounting space 201 with dimensions of 2mm by 2mm, and the dielectric resonator antenna 2 is located in the mounting space 201. The dielectric resonator antenna 2 includes a non-metallic dielectric block 21, two feed ports 22, and a metal post 23. The height of the nonmetal dielectric block 21 is 3mm, the nonmetal dielectric block 21 protrudes 1mm relative to the metal frame 200, and the section of the nonmetal dielectric block 21 is rectangular, and the size is 1.7mm long × 1.7mm wide. The non-metal dielectric block 21 is made of a ceramic material with a dielectric constant of 20. The two feeding ports 22 are respectively fixed to two side surfaces of the non-metallic dielectric block 21. The metal column 23 is embedded in the middle of the non-metal dielectric block 21, and the metal column 23 penetrates through the non-metal dielectric block 21. A gap is formed between the surface of the non-metal dielectric block 21 and the wall surface of the mounting space 201, and a gap is formed between the two power feeding ports 22 and the wall surface of the mounting space 201. The dielectric resonator antenna 2 may be wrapped by a package (not shown in the figure) that isolates the dielectric resonator antenna 2 from the metal frame 200, and the package is made of a plastic material with a dielectric constant of 2.8.

Referring to fig. 9 to 13 together, fig. 9 is a graph of S-parameter of the dielectric resonator antenna 2 obtained by the simulation of the structure shown in fig. 7, fig. 10 is a schematic diagram of an electric field of the dielectric resonator antenna 2 obtained by the simulation of the structure shown in fig. 7, fig. 11 is a schematic diagram of an electric field of the dielectric resonator antenna 2 obtained by the simulation of the structure shown in fig. 7, and fig. 12 is a gain sectional pattern of the dielectric resonator antenna 2 obtained by the simulation of the structure shown in fig. 7 at 28 GHz.

Wherein, the solid line in fig. 9 represents the S11 curve, and the S11 curve is used to represent the input return loss; the dotted line represents an S22 curve, and an S22 curve is used for reflecting the output return loss; the dotted line represents the curve of S21, and the curve of S21 is used for representing the isolation between two ports; the abscissa is frequency in GHz and the ordinate is dB. As shown in fig. 9, in the millimeter wave operating frequency band 26.5GHz to 29.5GHz, the return loss of the two feed ports 22 of the dielectric resonator antenna 2 is above 10dB, and the isolation is above 15dB, so as to meet the antenna performance requirement.

As can be seen from fig. 9, the dielectric resonator antenna 2 forms two resonant frequency bands, fig. 10 corresponds to an electric field diagram of the dielectric resonator antenna 2 in the low-frequency resonant frequency band, and fig. 11 corresponds to an electric field diagram of the dielectric resonator antenna 2 in the high-frequency resonant frequency band.

Wherein, the solid line in fig. 12 represents the main polarization gain, and the broken line represents the cross polarization index; the abscissa is in degrees and the ordinate is in dB. As can be seen from fig. 12, the minimum gain of the dielectric resonator antenna 2 at 28GHz is 4.5dB, and the cross polarization is greater than 20dB, which satisfies the antenna performance requirement.

Referring to fig. 4 again, in some embodiments, the number of the dielectric resonator antennas 2 is multiple, and the multiple dielectric resonator antennas 2 are arranged in an array. For example, the plurality of dielectric resonator antennas 2 may form a 1 × 2 array antenna. In the present embodiment, the plurality of dielectric resonator antennas 2 arranged in an array form an array antenna, which can reduce the scattering problem of high-frequency electromagnetic waves when millimeter waves are used, and can also enhance and improve the directivity of a radiation field and enhance the intensity of the radiation field.

Wherein the distance between two adjacent dielectric resonator antennas 2 may be about a half wavelength. Illustratively, the operating frequency band of the dielectric resonator antenna 2 includes 30GHz, and the distance between two adjacent dielectric resonator antennas 2 is about 5 mm.

Referring to fig. 13, fig. 13 shows gain patterns obtained by simulation of the dielectric resonator antenna 2 of the 1 × 2 array shown in fig. 4. As can be seen from fig. 13, the radiation field of the 1 × 2 array dielectric resonator antenna 2 has good directivity, and the dielectric resonator antenna 2 mainly radiates in a direction away from the circuit board 1, that is, above the circuit board 1. When the dielectric resonator antenna 2 is integrated in the key 10, the main radiation direction radiates to the outside of the key 10, that is, to the outside of the frame 101a of the mobile terminal 100, and is not blocked by the frame 101a, and the frame 101a has a small influence on the pointing direction of the millimeter wave beam transmitted and received by the dielectric resonator antenna 2, so that the millimeter wave beam can cover the required direction, the beam pointing error is small, and the antenna performance of the millimeter wave antenna is improved.

Referring to fig. 14 and 15 together, fig. 14 is a horizontal polarization pattern obtained by simulation of the dielectric resonator antenna 2 of the 1 × 2 array shown in fig. 4, and fig. 15 is a vertical polarization pattern obtained by simulation of the dielectric resonator antenna 2 of the 1 × 2 array shown in fig. 4. Fig. 14 and 15 correspond to fig. 13. As can be seen from fig. 14 and 15, the radiation fields of the 1 × 2 array dielectric resonator antenna 2 in the two polarization directions both have good directivity, and when the 1 × 2 array dielectric resonator antenna 2 is integrated in the key 10, the main radiation direction radiates to the outside of the frame 101a of the mobile terminal 100, and is not blocked by the frame 101a, and the frame 101a has little influence on the direction of the millimeter wave beam transmitted and received by the dielectric resonator antenna 2.

In the present application, the dielectric constant material and the number of arrangements of the dielectric resonator antenna 2 may be selected depending on the shape, size, etc. of the structural member (e.g., the key 10). For example, a 1 × 2 array of dielectric resonator antennas 2 is integrated in the power key 105 according to the shape and size of the power key 105. When the dielectric resonator antenna 2 is integrated with the volume key 106 having a large structural size, a 1 × 4 array can be formed. In other embodiments, the number of the dielectric resonator antennas 2 may also be 1, 8 or other numbers, which is not strictly limited in this application.

In the present application, the dielectric resonator antenna 2 has various modifications, which are exemplified below.

Referring to fig. 4 and 16 together, fig. 16 is a schematic structural diagram of the dielectric resonator antenna 2 according to another embodiment of the present application.

In some embodiments, the dielectric resonator antenna 2 includes a non-metal dielectric block 21, a metal post 23 embedded in the non-metal dielectric block 21, and a feeding port 22 fixed to the non-metal dielectric block 21. The resonant frequency band of the dielectric resonant antenna 2, which is generated by loading the metal pillar 23, is affected by the length of the metal pillar 23. Illustratively, as shown in fig. 4, the metal post 23 may penetrate the dielectric resonator antenna 2. At this time, the length of the metal posts 23 is equal to the height of the non-metallic dielectric block 21 in the direction perpendicular to the circuit board 1. Illustratively, as shown in fig. 16, the metal post 23 may not penetrate the dielectric resonator antenna 2. At this time, the length of the metal posts 23 is smaller than the height of the non-metallic dielectric block 21 in the direction perpendicular to the circuit board 1.

Referring to fig. 17 and 18 together, fig. 17 is a schematic structural diagram of a dielectric resonator antenna 2 according to still other embodiments of the present application, and fig. 18 is a schematic structural diagram of the dielectric resonator antenna 2 according to still other embodiments of the present application.

In some embodiments, the dielectric resonator antenna 2 includes a non-metallic dielectric block 21 and a feed port 22 fixed to the non-metallic dielectric block 21. An adjusting hole 24 is arranged in the non-metal dielectric block 21, and a metal layer 25 is arranged on the hole wall of the adjusting hole 24. The metal layer 25 is circumferentially fixed to the wall of the adjustment hole 24. The dielectric resonant antenna 2 generates a new resonant frequency band by inductive loading of the metal layer 25, so that the coverage frequency band of the dielectric resonant antenna 2 is increased, and the bandwidth is expanded. The resonant frequency band resulting from the loading of the metal layer 25 is highly influenced by the height of the metal layer 25.

Illustratively, as shown in fig. 17, the adjusting hole 24 is a through hole penetrating through the non-metallic dielectric block 21, and the metal layer 25 covers all the hole walls of the adjusting hole 24. At this time, the height of the metal layer 25 is equal to the height of the non-metallic dielectric block 21 in the direction perpendicular to the circuit board 1. For example, as shown in fig. 18, the adjustment hole 24 may be a blind hole that does not penetrate through the non-metallic dielectric block 21, and the metal layer 25 covers the entire hole wall of the adjustment hole 24. At this time, the height of the metal layer 25 is smaller than the height of the non-metallic dielectric block 21 in the direction perpendicular to the circuit board 1. In other embodiments, the metal layer 25 may also cover part of the hole wall of the adjusting hole 24, the adjusting hole 24 is a through hole or a blind hole, and the height of the metal layer 25 is less than the height of the non-metallic dielectric block 21 in the direction perpendicular to the circuit board 1.

Referring to fig. 19, fig. 19 is a schematic structural diagram of a dielectric resonator antenna 2 according to still other embodiments of the present disclosure.

In some embodiments, the dielectric resonator antenna 2 includes a non-metallic dielectric block 21 and a feed port 22 fixed to the non-metallic dielectric block 21. In this embodiment, a feeding signal is input from the feeding port 22 to excite the non-metallic dielectric block 21 to resonate. In this embodiment, the nonmetal dielectric block 21 does not need to be processed by drilling, and is simple to process and low in cost.

Referring to fig. 4 and 20 together, fig. 20 is a schematic structural diagram of a dielectric resonator antenna 2 according to still other embodiments of the present disclosure.

In some embodiments, the dielectric resonator antenna 2 includes a non-metallic dielectric block 21 and a feed port 22 fixed to the non-metallic dielectric block 21. The feed port 22 may be implemented in a variety of ways. Illustratively, as shown in fig. 4, the feeding port 22 includes a first portion 22a and a second portion 22b connected to the first portion 22a, the first portion 22a is fixed to a side surface of the non-metal dielectric block 21, and the second portion 22b is bent with respect to the first portion 22a and extends in a direction away from the non-metal dielectric block 21. Illustratively, as shown in fig. 20, the feeding port 22 includes a first portion 22a and a second portion 22b connected to the first portion 22a, the first portion 22a is fixed to a side surface of the non-metal dielectric block 21, and the second portion 22b is bent with respect to the first portion 22a and fixed to a bottom surface of the non-metal dielectric block 21.

It is understood that the dielectric resonator antenna 2 shown in fig. 16 to 20 may also be integrated into a structural member of the mobile terminal 100, such as the key 10 shown in fig. 3.

In the present application, the key 10 has various modifications, and the following key 10 may be applied to the mobile terminal 100 by way of example.

Referring to fig. 21, fig. 21 is a schematic view of an internal structure of a key 10 according to an embodiment of the present application in other embodiments. The key 10 of the present embodiment may include most of the features of the key 10 of the previous embodiments, and the differences between the two will be mainly described below, and the same parts will not be described again.

In some embodiments, the key 10 may further include a radio frequency chip 4, the radio frequency chip 4 is fixed on a side of the circuit board 1 facing away from the dielectric resonant antenna 2, and the radio frequency chip 4 is electrically connected to the circuit board 1. In the present embodiment, the rf chip 4 is electrically connected to the feeding port 22 of the dielectric resonator antenna 2 through the circuit board 1 to transmit and receive rf signals. At this time, the transmission path of the radio frequency signal is short, which is advantageous for improving the antenna performance of the dielectric resonator antenna 2.

Referring to fig. 22, fig. 22 is a schematic diagram illustrating an internal structure of a key 10 according to an embodiment of the present application in further embodiments. The key 10 of the present embodiment may include most of the features of the key 10 of the previous embodiments, and the differences between the two will be mainly described below, and the same parts will not be described again.

In some embodiments, the circuit board 1 includes a circuit board antenna 14 and an antenna feed 15, and the circuit board antenna 14 and the dielectric resonator antenna 2 are both electrically connected to the antenna feed 15. In this embodiment, the circuit board antenna 14 and the dielectric resonator antenna 2 together form an antenna module, both are connected to the same antenna feeder 15, and the circuit board antenna 14 and the dielectric resonator antenna 2 form different resonant frequency bands, respectively, so that the antenna module obtains at least two resonant frequency bands to have a larger bandwidth. Wherein, the two resonance frequency bands can also be combined into one wide frequency band.

Referring to fig. 23, fig. 23 is a schematic diagram illustrating an internal structure of a key 10 according to still other embodiments of the present application. The key 10 of the present embodiment may include most of the features of the key 10 of the previous embodiments, and the differences between the two will be mainly described below, and the same parts will not be described again.

In some embodiments, the key cap 3 of the key 10 has a top surface 31 and a peripheral side surface 32, the top surface 31 of the key cap 3 is located on a side of the dielectric resonator antenna 2 facing away from the circuit board 1, and the peripheral side surface 32 of the key cap 3 is connected to a periphery of the top surface 31. The key 10 may further include a non-metal plating 33, the non-metal plating 33 being fixed to the key cap 3 and covering the top surface 31 and the peripheral side surface 32. In this embodiment, the non-metal plating layer 33 can be used to protect the key cap 3, and does not affect the signal transmission and reception of the dielectric resonator antenna 2.

For example, the non-metal plating layer 33 may have the same color as or similar to the appearance surface 1011 (see fig. 6) of the frame 101a of the mobile terminal 100, and both may have the same color system, so as to improve the appearance consistency and the aesthetic property of the mobile terminal 100.

Referring to fig. 24 and 25 together, fig. 24 is a schematic view illustrating an internal structure of a card holder 20 according to an embodiment of the present disclosure; fig. 25 is a schematic view of the internal structure of the card holder 20 shown in fig. 24 at another angle. The card holder 20 shown in this embodiment can be used as the card holder 103 of the mobile terminal 100 shown in fig. 1.

In some embodiments, the card holder 20 includes a circuit board 1, a dielectric resonator antenna 2, a door panel 5, and a tray 6. Tray 6 is fixed in one side of door plant 5, and tray 6 is equipped with draw-in groove 61. The card slot 61 is used to mount a memory card, a SIM card, and the like. The dielectric resonator antenna 2 is fixed to the circuit board 1 and electrically connected to the circuit board 1. The dielectric resonator antenna 2 is used for transmitting and receiving electromagnetic waves. The dielectric resonator antenna 2 may be used as a millimeter wave antenna, and for example, the dielectric resonator antenna 2 may operate in a frequency band range of 24.25GHz to 29.5GHz, 37GHz to 43.5 GHz. The dielectric resonator antenna 2 is embedded in the door panel 5, and the circuit board 1 is located on the side of the dielectric resonator antenna 2 facing the tray 6. The door panel 5 is made of a low dielectric constant material to allow electromagnetic waves to pass through.

In the present embodiment, according to the antenna radiation principle, the radiation direction of the dielectric resonator antenna 2 for receiving and transmitting the electromagnetic wave is directed to the side away from the circuit board 1, and since the door panel 5 does not shield the electromagnetic wave, the dielectric resonator antenna 2 has better antenna performance. In addition, since the door panel 5 wraps the dielectric resonator antenna 2, when the card holder 20 is mounted on another structure, the door panel 5 can isolate the dielectric resonator antenna 2 from other structures, particularly from a metal structure, so as to reduce interference of the other structures with the dielectric resonator antenna 2.

Illustratively, the dielectric constant of the door panel 5 is less than or equal to 6. The dielectric constant of the door panel 5 may be between 2 and 6, and a smaller value may be adopted as much as possible. For example, the door panel 5 may be made of plastic, glass, or the like. Door plant 5 can be through the plastic packaging mode, parcel dielectric resonator antenna 2 and with dielectric resonator antenna 2 reciprocal anchorage. The circuit board 1 is a structural member including at least one non-conductive substrate and at least one conductive layer.

The tray 6 and the door panel 5 may be an integrated structure, or may be assembled to form an integrated structure. The material of the tray 6 may be the same as or different from the material of the door panel 5, for example, the tray 6 may be made of a plastic material.

In some embodiments, the dielectric resonator antenna 2 includes a non-metal dielectric block 21 and two feeding ports 22 located on a surface of the non-metal dielectric block 21, and the two feeding ports 22 are spaced apart from each other. Wherein, the non-metal dielectric block 21 is made of a high dielectric constant material, and the dielectric constant of the non-metal dielectric block 21 can be in the range of 8 to 100, for example, 10 to 30. Illustratively, the non-metallic dielectric block 21 may be made of a ceramic material. The non-metal dielectric block 21 is fixed on the circuit board 1, and both the two feeding ports 22 are electrically connected with the circuit board 1 to form the dual-polarized dielectric resonant antenna 2. Wherein the two polarization directions of the dual-polarized dielectric resonator antenna 2 are orthogonal, for example, the two polarization directions are horizontal and vertical, respectively, or the two polarization directions are +45 ° and-45 °, respectively. The dual polarized dielectric resonator antenna 2 has a large communication capacity.

In some embodiments, the circuit board 1 may be a multi-layer board structure, such as a 4-layer board, i.e. having 4 conductive layers. The circuit board 1 has a feeder line (not shown in the figure) electrically connected to the feed port 22 of the dielectric resonator antenna 2. The circuit board 1 may further have a first ground layer (not shown) on a side of the feed line away from the dielectric resonator antenna 2. Here, the circuit board 1 may further have a second ground layer (not shown in the figure) on a side of the power feeding line 1 close to the dielectric resonator antenna 2. In other embodiments, the circuit board 1 may be a double-layer board, a six-layer board, etc., and the power line and the ground layer may be arranged at different positions in the circuit board 1, which is not strictly limited in this application. The circuit board 1 may be a hard circuit board or a flexible circuit board.

In some embodiments, the dielectric resonator antenna 2 may further include a metal pillar 23, and the metal pillar 23 is embedded in the non-metal dielectric block 21. Wherein the metal column 23 is not grounded. Illustratively, the dielectric resonator antenna 2 can form two resonant frequency bands, of which the low-frequency resonant frequency band is mainly generated by exciting the non-metallic dielectric block 21 through the two feeding ports 22, and the high-frequency resonant frequency band is mainly generated by inductive loading of the metal posts 23. In short, the metal posts 23 can increase the frequency band of the dielectric resonator antenna 2 by generating new resonant frequency bands, thereby increasing the bandwidth of the dielectric resonator antenna 2. In addition, the metal posts 23 can also increase the isolation of the two feed ports 22. Wherein, the two resonance frequency bands can also be combined into one wide frequency band.

Wherein the metal post 23 may penetrate the dielectric resonator antenna 2. At this time, the length of the metal posts 23 is equal to the height of the non-metallic dielectric block 21 in the direction perpendicular to the circuit board 1. In other embodiments, the metal post 23 may not penetrate the dielectric resonator antenna 2. At this time, the length of the metal posts 23 is smaller than the height of the non-metallic dielectric block 21 in the direction perpendicular to the circuit board 1.

In other embodiments, the non-metallic dielectric block 21 has an adjustment hole therein, and the wall of the adjustment hole has a metal layer. At this time, no metal column is provided in the non-metal dielectric block 21. The dielectric resonant antenna 2 generates a new resonant frequency band by inductive loading of the metal layer, so that the coverage frequency band of the dielectric resonant antenna 2 is increased, and the bandwidth is expanded. The resonant frequency band generated by the metal layer loading is highly influenced by the metal layer. The adjusting holes can be through holes penetrating through the nonmetal dielectric block 21, and the metal layer covers all hole walls of the adjusting holes. At this time, the height of the metal layer is equal to the height of the non-metallic dielectric block 21 in the direction perpendicular to the circuit board 1. Or, the adjusting hole may be a blind hole that does not penetrate through the non-metallic dielectric block 21, and the metal layer covers all hole walls of the adjusting hole. At this time, the height of the metal layer is smaller than the height of the non-metallic dielectric block 21 in the direction perpendicular to the circuit board 1. Or, the metal layer may cover part of the hole wall of the adjusting hole, the adjusting hole is a through hole or a blind hole, and the height of the metal layer is smaller than that of the non-metal dielectric block 21 in the direction perpendicular to the circuit board 1. In other embodiments, the non-metallic dielectric block 21 may not have metal posts and metal layers disposed therein.

In some embodiments, as shown in fig. 24, the number of the dielectric resonator antennas 2 is plural, and the plural dielectric resonator antennas 2 are arranged in an array. For example, the plurality of dielectric resonator antennas 2 may form a 1 × 2 array antenna. In the present embodiment, the plurality of dielectric resonator antennas 2 arranged in an array form an array antenna, which can reduce the scattering problem of high-frequency electromagnetic waves when millimeter waves are used, and can also enhance and improve the directivity of a radiation field and enhance the intensity of the radiation field.

Wherein the distance between two adjacent dielectric resonator antennas 2 may be about a half wavelength. Illustratively, the operating frequency band of the dielectric resonator antenna 2 includes 30GHz, and the distance between two adjacent dielectric resonator antennas 2 is about 5 mm. In other embodiments, the number of the dielectric resonator antennas 2 may be 1.

In some embodiments, the card holder 20 may further include a connection circuit (not shown), one end of the connection circuit is electrically connected to the circuit board 1, and the other end of the connection circuit may be provided with a connection terminal. The connection circuit may be implemented by a circuit board, which may be fixedly connected to the door panel 5 and/or the tray 6; the connection circuit may also be realized by conductive wires embedded in the door panel 5 and/or the tray 6. The connection terminals are used to electrically connect with other parts of the mobile terminal 100, such as connection terminals in a card socket. The connecting terminal can be a bonding pad, a conductive elastic sheet, a probe and the like. Illustratively, the mobile terminal 100 may include a radio frequency chip (not shown) for modulating a radio frequency signal or demodulating a radio frequency signal. The radio frequency chip is fixed on the main board 107 and electrically connected with the processor. The connecting terminal of the card seat is electrically connected with the radio frequency chip. In some other embodiments, the processor includes a radio frequency processing module for processing a radio frequency signal, the connection terminal of the socket is electrically connected to the processor, and the mobile terminal 100 may not be provided with a radio frequency chip.

In some other embodiments, the card holder 20 may further include a radio frequency chip (not shown), the radio frequency chip is fixed on a side of the circuit board 1 opposite to the dielectric resonator antenna 2, and the radio frequency chip is electrically connected to the circuit board 1. In the present embodiment, the rf chip is electrically connected to the feeding port 22 of the dielectric resonator antenna 2 through the circuit board 1 to transmit and receive rf signals. At this time, the transmission path of the radio frequency signal is short, which is advantageous for improving the antenna performance of the dielectric resonator antenna 2.

Referring to fig. 26, fig. 26 is a partial structural diagram of the mobile terminal 100 shown in fig. 1. The card holder 20 shown in fig. 24 can be used as the card holder 103 of the mobile terminal 100.

In some embodiments, the mobile terminal 100 includes a bezel 101a, a card socket 104 located inside the bezel 101a, and a card holder 20. The frame 101a is made of metal material, the frame 101a is provided with a card support insertion hole 101c, the door panel 5 is located in the card support insertion hole 101c, and the tray 6 is inserted into the card seat 104. The door panel 5 is exposed to the frame 101 a.

In this embodiment, the dielectric resonator antenna 2 is integrated in the card holder 20, the door panel 5 of the card holder 20 is located in the card holder insertion hole 101c, and a certain distance is formed between the dielectric resonator antenna 2 and the frame 101a because the door panel 5 wraps the dielectric resonator antenna 2. The door plate 5 is partially exposed relative to the frame 101a, the dielectric resonator antenna 2 is not shielded by the frame 101a and forms a certain distance with the frame 101a, and the door plate 5 allows electromagnetic waves to pass through, so that the influence of the door plate 5 and the frame 101a on the orientation of the millimeter wave beam transmitted and received by the dielectric resonator antenna 2 is small, the millimeter wave beam can cover the required direction, the beam orientation error is small, and the antenna performance of the millimeter wave antenna is improved. Meanwhile, the frame 101a of the mobile terminal 100 does not need to be additionally slotted, so that the millimeter wave antenna does not affect the product appearance design of the mobile terminal 100, and the appearance integrity of the mobile terminal 100 is better.

The door panel 5 is exposed from the frame 101a, and may include a case where the appearance surface 5a of the door panel 5 is flush with the appearance surface 1011 of the frame 101a, or may include a case where the appearance surface 5a of the door panel 5 is retracted from the appearance surface 1011 of the frame 101a but is not blocked by the appearance surface 1011 of the frame 101 a. The exterior surface 5a of the door panel 5 is an outer surface facing the outside of the mobile terminal 100. The external surface 1011 of the frame 101a is the outer surface of the frame 101a facing the outside of the mobile terminal 100. When the appearance surface 5a of the door panel 5 is flush with the appearance surface 1011 of the frame 101a, the mobile terminal 100 has a smoother appearance, and the risk of dust and other dirt accumulating around the card holder 20 is small. When the appearance surface 5a of the door panel 5 and the appearance surface 1011 of the frame 101a contract inwards, the deformation and damage of the non-metal part caused by fading can be avoided.

The card socket 104 is provided with a connection terminal (not shown in the figure), which is electrically connected to the rf chip or the rf processing module of the mobile terminal 100. When the tray 6 of the card holder 20 is inserted into the card socket 104, the connection terminal of the connection circuit of the card holder 20 is electrically connected with the connection terminal of the card socket 104 of the mobile terminal 100, so that the dielectric resonator antenna 2 can transmit and receive radio frequency signals. When the tray 6 is detached from the card holder 104, the connection terminal of the connection circuit is detached from the connection terminal of the card holder 104, and the dielectric resonator antenna 2 does not operate.

In some embodiments, the color of the appearance surface 5a of the door panel 5 may be the same as or similar to the color of the appearance surface 1011 of the frame 101a, and both may adopt the same color system, so as to improve the appearance consistency and the aesthetic property of the mobile terminal 100. The door panel 5 may be a color, and the color of the door panel 5 is the color of the appearance surface 5a of the door panel 5. The door panel 5 may be a mixture of colors, and a color of a partial region of the door panel 5 may be different from a color of the design surface 5a of the door panel 5.

In the present application, the card holder 20 has various modifications, and the following card holder 20 can be applied to the mobile terminal 100 by way of example.

Referring to fig. 27, fig. 27 is a schematic view of an internal structure of a card holder 20 according to another embodiment of the present disclosure. The card holder 20 of the present embodiment may include most of the features of the card holder 20 of the previous embodiments, and the differences between the two will be mainly described below, and the same parts will not be described again.

The door panel 5 of the card holder 20 has a top surface 51, and the top surface 51 of the door panel 5 is located on the side of the dielectric resonator antenna 2 facing away from the circuit board 1. The card holder 20 may further include a non-metal plating 52, the non-metal plating 52 being fixed to the door panel 5 and covering the top surface 51 of the door panel 5. In the present embodiment, the non-metal plating layer 52 can be used to protect the card holder 20, and does not affect the signal transmission and reception of the dielectric resonator antenna 2.

The outer surface of the non-metal plating layer 52 facing away from the door panel 5 is the design surface 5a of the door panel 5. The overall color of the non-metal plating layer 52 is the same, and the color of the non-metal plating layer 52 may be the same as or similar to the color of the appearance surface 1011 (see fig. 26) of the frame 101a of the mobile terminal 100, and both may adopt the same color system, so as to improve the appearance consistency and the aesthetic property of the mobile terminal 100. When the non-metal plating layer 52 includes a plurality of sub-plating layers and the plurality of sub-plating layers have two or more colors, the color of the surface sub-plating layer including the design surface 5a of the non-metal plating layer 52 is the same as or similar to the color of the design surface 1011 (see fig. 26) of the bezel 101a of the mobile terminal 100, and the two sub-plating layers may adopt the same color system.

Referring to fig. 28, fig. 28 is a schematic diagram illustrating an internal structure of a card holder 20 according to still other embodiments of the present disclosure. The card holder 20 of the present embodiment may include most of the features of the card holder 20 of the previous embodiments, and the differences between the two will be mainly described below, and the same parts will not be described again.

In some embodiments, the circuit board 1 includes a circuit board antenna 14 and an antenna feed 15, and the circuit board antenna 14 and the dielectric resonator antenna 2 are both electrically connected to the antenna feed 15. In this embodiment, the circuit board antenna 14 and the dielectric resonator antenna 2 together form an antenna module, both are connected to the same antenna feeder 15, and the circuit board antenna 14 and the dielectric resonator antenna 2 form different resonant frequency bands, so that the antenna module obtains at least two resonant frequency bands and has a larger bandwidth. Wherein, the two resonance frequency bands can also be combined into one wide frequency band.

In a non-conflicting manner, the card holder 20 shown in fig. 24 to 28 may include some features of the key 10 described above, such as related features of a dielectric resonant antenna, related features of a circuit board, and the like.

Referring to fig. 29, fig. 29 is a schematic view of an internal structure of a camera decoration 30 according to an embodiment of the present application. The camera ornament 30 of the present embodiment can be used as the camera ornament 1014 of the mobile terminal 100 shown in fig. 2.

In some embodiments, the camera trim 30 includes a circuit board 1, a dielectric resonator antenna 2, a trim body 7, and a lens 8. The garnish body 7 is provided with a light-transmitting hole 71, and the light-transmitting hole 71 is for allowing light to pass therethrough. The lens 8 is fixed to the garnish body 7 and covers the light transmission hole 71. The lens 8 is a light-transmitting member, and the lens 8 may be made of a glass material. The dielectric resonator antenna 2 is fixed to the circuit board 1 and electrically connected to the circuit board 1. The dielectric resonator antenna 2 is used for transmitting and receiving electromagnetic waves. The dielectric resonator antenna 2 may be used as a millimeter wave antenna, and for example, the dielectric resonator antenna 2 may operate in a frequency band range of 24.25GHz to 29.5GHz, 37GHz to 43.5 GHz. The dielectric resonator antenna 2 is embedded in the garnish body 7 and covered with the lens 8, that is, the dielectric resonator antenna 2 is located below the lens 8 in a projection area of the lens 8 in a thickness direction thereof. The circuit board 1 is located on the side of the dielectric resonator antenna 2 remote from the lens 8. The garnish body 7 employs a low dielectric constant material to allow passage of electromagnetic waves.

In the present embodiment, according to the antenna radiation principle, the radiation direction of the dielectric resonator antenna 2 for receiving and transmitting the electromagnetic wave is directed to the side away from the circuit board 1, that is, to the lens 8, and since the decoration body 7 and the lens 8 do not shield the electromagnetic wave, the dielectric resonator antenna 2 has a better antenna performance. In addition, because the dielectric resonator antenna 2 is wrapped by the decoration body 7, the decoration body 7 can isolate the dielectric resonator antenna from other structures, particularly metal structures, so as to reduce the interference of other structures on the dielectric resonator antenna 2.

Illustratively, the dielectric constant of the trim body 7 is less than or equal to 6. The dielectric constant of the decoration body 7 can be 2 to 6, and can be as small as possible. For example, the garnish body 7 may be made of plastic, glass, or the like. The decoration body 7 can wrap the dielectric resonant antenna 2 and be fixed with the dielectric resonant antenna 2 through a plastic packaging mode. The circuit board 1 is a structural member including at least one non-conductive substrate and at least one conductive layer.

Illustratively, the garnish body 7 may be provided with two light-transmissive holes 71 disposed at a distance from each other, with the dielectric resonator antenna 2 being located between the two light-transmissive holes 71. In other embodiments, the decoration body 7 may also be provided with more than three light holes 71 spaced apart from each other, and the dielectric resonator antenna 2 is located between the light holes 71. In other embodiments, the decoration element body 7 may also be provided with a light hole 71, and the dielectric resonator antenna 2 is located around the light hole 71.

In some embodiments, the camera trim piece 30 may also include a ferrule 9. The metal ring 9 is fixed on the decoration body 7 and arranged around the lens 8, and the dielectric resonant antenna 2 and the metal ring 9 are arranged at intervals. In this embodiment, the eyelet 9 protects the lens 8 to reduce the risk of the lens 8 breaking due to impact, collision, etc. In addition, since the metal ring 9 is disposed around the lens 8, and the dielectric resonator antenna 2 is located below the lens 8 and spaced apart from the metal ring 9, the transmission and reception of signals by the dielectric resonator antenna 2 are not affected by the disposition of the metal ring 9. Wherein, the metal ring 9 can be fixed on the decoration body 7 by an adhesive way.

Referring to fig. 29 and 30 together, fig. 30 is a plan view of the dielectric resonator antenna 2 of the camera deco 30 shown in fig. 29.

In some embodiments, the number of the dielectric resonator antennas 2 is one. In other embodiments, the number of the dielectric resonator antennas 2 may also be multiple, and the multiple dielectric resonator antennas 2 are arranged in an array. For example, the plurality of dielectric resonator antennas 2 may form a 1 × 2 array antenna or a 2 × 2 array antenna or the like. In the present embodiment, the plurality of dielectric resonator antennas 2 arranged in an array form an array antenna, which can reduce the scattering problem of high-frequency electromagnetic waves when millimeter waves are used, and can also enhance and improve the directivity of a radiation field and enhance the intensity of the radiation field. Wherein the distance between two adjacent dielectric resonator antennas 2 may be about a half wavelength.

In some embodiments, the camera trim piece 30 may further include a flexible circuit board (not shown). One end of the flexible circuit board is electrically connected with the circuit board 1, and the other end is provided with an electric connector. The electrical connector is used to electrically connect with other components of the mobile terminal 100. Illustratively, the mobile terminal 100 may include a radio frequency chip (not shown) for modulating a radio frequency signal or demodulating a radio frequency signal. The radio frequency chip is fixed on the main board 107 and electrically connected with the processor. The electric connector of the flexible circuit board is electrically connected with the radio frequency chip. In some other embodiments, the processor includes a radio frequency processing module for processing radio frequency signals, the electrical connector of the flexible circuit board is electrically connected to the processor, and the mobile terminal 100 may not be provided with a radio frequency chip. For example, the flexible circuit board and the circuit board 1 may be connected by assembling, or may be an integrated structure, for example, the flexible circuit board and the circuit board 1 are respectively a part of a rigid-flex circuit board. The present application does not strictly limit the specific structures, connection relationships, and the like of the flexible circuit board and the circuit board 1.

In some other embodiments, the camera decoration piece 30 may further include a radio frequency chip (not shown in the figure), the radio frequency chip is fixed on a side of the circuit board 1 opposite to the dielectric resonator antenna 2, and the radio frequency chip is electrically connected to the circuit board 1. In the present embodiment, the rf chip is electrically connected to the feeding port 22 of the dielectric resonator antenna 2 through the circuit board 1 to transmit and receive rf signals. At this time, the transmission path of the radio frequency signal is short, which is advantageous for improving the antenna performance of the dielectric resonator antenna 2.

Referring to fig. 31, fig. 31 is a partial structural diagram of the mobile terminal 100 shown in fig. 1. Among them, the camera ornament 30 shown in fig. 29 can be used as the camera ornament 1014 of the mobile terminal 100 shown in fig. 1.

In some embodiments, the mobile terminal 100 includes a rear cover 101b and a camera trim 30. The rear cover 101b is made of a metal material, and the rear cover 101b is provided with an imaging hole 101 i. The camera trim 30 is inserted into the imaging hole 101i, and the lens 8 is exposed to the rear cover 101 b. The camera decoration 30 may partially protrude from the outer surface of the rear cover 101b, for example, the metal ring 9 of the camera decoration 30 protrudes from the outer surface of the rear cover 101 b.

In the present embodiment, the dielectric resonator antenna 2 is integrated in the camera trim 30, the camera trim 30 is inserted into the imaging hole 101i, and the trim body 7 wraps the dielectric resonator antenna 2, so a certain distance is formed between the dielectric resonator antenna 2 and the rear cover 101 b. Lens 8 of camera decoration 30 exposes behind lid 101b relatively, dielectric resonator antenna 2 is located lens 8 below, dielectric resonator antenna 2 not sheltered from by back lid 101b and form certain distance between with back lid 101b, lens 8 and decoration body 7 allow the electromagnetic wave to pass, consequently lens 8, decoration body 7 and back lid 101b are less to the directional influence of millimeter wave beam of dielectric resonator antenna 2 receiving and dispatching, make the millimeter wave beam can cover required direction, beam pointing error is less, the antenna performance of millimeter wave antenna has been improved. Meanwhile, the rear cover 101b of the mobile terminal 100 does not need to be additionally slotted, so that the millimeter wave antenna does not affect the product appearance design of the mobile terminal 100, and the appearance integrity of the mobile terminal 100 is better.

The camera module 1013 of the mobile terminal 100 is disposed corresponding to the light-transmitting hole 71, and external light enters the camera module 1013 after passing through the lens 8 and the light-transmitting hole 71. For example, the camera module 1013 may partially extend into the light transmission hole 71. The number of camera modules 1013 is adapted to the number of light-transmitting holes 71.

In the present application, the camera decoration 30 has various modifications, and the following camera decoration 30 may be applied to the mobile terminal 100 by way of example.

Referring to fig. 32, fig. 32 is a schematic view of an internal structure of a camera decoration piece 30 according to still other embodiments of the present disclosure. The camera decoration piece 30 of the present embodiment may include most features of the camera decoration piece 30 of the previous embodiment, and differences between the two are mainly described below, and the same parts are not repeated.

In a non-conflicting manner, the camera decoration 30 shown in fig. 29 to 32 may include some features of the key 10 described above, such as the related features of the dielectric resonator antenna, the related features of the circuit board, and the like.

Referring to fig. 33 and 34 together, fig. 33 is a schematic structural diagram of an antenna module according to an embodiment of the present application, and fig. 34 is a schematic cross-sectional diagram of the antenna module shown in fig. 33 taken along line C-C.

In some embodiments, antenna module 300 includes a dielectric substrate 301, a ground plane 302, a ground post 303, a patch antenna 304, two feed posts 305, and a dielectric resonator antenna 306. The dielectric constant of the dielectric substrate 301 may be between 2.2 and 4.5. The floor 302 is fixed on the bottom surface of the dielectric substrate 301, and the grounding post 303 is embedded in the dielectric substrate 301 and connected to the floor 302. The patch antenna 304 is fixed to the top surface of the dielectric substrate 301. Two feeding columns 305 are arranged at intervals, and one end of each feeding column 305 is connected with a patch antenna 304. The other end of each feed post 305 may extend through the floor 302 with a gap formed between the other end and the floor 302. The ground stud 303 may be disposed at an interval from the patch antenna 304, or may be connected to the patch antenna 304.

Dielectric resonator antenna 306 is secured to the side of patch antenna 304 remote from dielectric substrate 301, i.e., to the top side of patch antenna 304. Illustratively, the dielectric resonator antenna 306 may be bonded to the dielectric substrate 301 by a glue layer 307. The dielectric resonator antenna 306 includes a metal pillar 306a, a first dielectric block 306b disposed around the metal pillar 306a, and a second dielectric block 306c disposed around the first dielectric block 306 b. The metal post 306a contacts the patch antenna 304. The glue layer 307 may be adhered between the first dielectric block 306b and the second dielectric block 306c and the dielectric substrate 301. Illustratively, the dielectric constant of the first dielectric block 306b may be in the range of 2 to 6, for example, a plastic material may be used. The dielectric constant of the second dielectric block 306c may be in the range of 10 to 30, and for example, a ceramic material may be used.

In this embodiment, the antenna module 300 radiates through the patch antenna 304 and the dielectric resonator antenna 306, the patch antenna 304 and the dielectric resonator antenna 306 are dual-polarized antennas, the feed-in signals through the two feed columns 305 can excite the patch antenna 304 to radiate, and the patch antenna 304 can excite the dielectric resonator antenna 306 to radiate, so that the antenna module 300 can realize the millimeter wave antenna performance of the full frequency bands of dual frequencies of 24.25GHz-29.5GHz and 37GHz-43.5 GHz. In addition, the ground post 303 can improve high frequency isolation and cross polarization. The metal post 306a of the dielectric resonator antenna 306 can adjust resonance and improve beam shift.

In some embodiments, the antenna module 300 may further include a metal wall 308, wherein the metal wall 308 is circumferentially fixed to the peripheral side surface 32 of the dielectric substrate 301 and connected to the ground plate 302 to enclose the metal cavity. The metal cavity is used to prevent other electromagnetic signals from interfering with patch antenna 304. In other embodiments, the antenna module 300 may not have the metal wall 308, which is not strictly limited in this application.

In some embodiments, the patch antenna 304 forms a first projection on the top surface of the dielectric substrate 301, the metal pillar 306a forms a second projection on the top surface of the dielectric substrate 301, the first dielectric block 306b forms a third projection on the top surface of the dielectric substrate 301, the outline of the first projection surrounds the second projection, and the outline of the third projection surrounds the first projection.

A possible embodiment of the antenna module 300 shown in fig. 33 is explained in the following by means of simulations.

Referring to fig. 35, fig. 35 is a schematic diagram illustrating an internal structure of the antenna module 300 shown in fig. 33 in one possible embodiment.

Illustratively, the dielectric substrate 301 has a dielectric constant of 3.5; the outer peripheral profile of the metal wall 308 is rectangular, with dimensions of 3.8mm x 3.8 mm; the patch antenna 304 is rectangular, and the size is 1.8mm × 1.8 mm; the distance between the top surface of the patch antenna 304 to the bottom surface of the floor 302 is 0.5 mm; the dielectric resonance antenna 306 is a cuboid with the size of 3.8mm multiplied by 1 mm; the metal column 306a is made of copper material; the first dielectric block 306b is made of a plastic material having a dielectric constant of 2.8, and the second dielectric block 306c is made of a ceramic material having a dielectric constant of 11.

Referring to fig. 36, fig. 36 is an echo curve and an isolation curve obtained by simulation of the antenna module 300 shown in fig. 35.

In fig. 36, the solid line is an echo curve, and the dotted line is a two-port isolation curve; the abscissa is frequency in GHz and the ordinate is dB. As shown in fig. 36, the return loss of the antenna module 300 in the frequency bands of 24.25GHz-29.5GHz and 37GHz-43.5GHz is above 10dB, and the isolation is above 17dB, so as to meet the antenna performance requirement.

Referring to fig. 36 to 39, fig. 37 is a schematic diagram of an electric field obtained by simulation of the antenna module 300 shown in fig. 35, and fig. 38 is a schematic diagram of an electric field obtained by simulation of the antenna module 300 shown in fig. 35; FIG. 39 is a schematic view of the electric field of FIG. 38 at another angle.

As shown in fig. 36, the antenna module 300 forms a low frequency resonance and a high frequency resonance. As shown in fig. 37, the low frequency resonance is generated by the patch antenna 304, and the main operation mode of the patch antenna 304 is the TM10 mode, that is, the electric field changes by one-half of the guided wave wavelength in the length direction of the patch antenna 304 and remains unchanged in the width direction. As shown in fig. 38 and 39, high-frequency resonance is generated by exciting the dielectric resonator antenna 306 by the patch antenna 304, and the main operation mode of the dielectric resonator antenna 306 is a HEM11 mode, that is, a Hybrid Electromagnetic Mode (HEM), which includes a TE mode and a TM mode, that is, a change in a guided wavelength in the circumferential direction and the radial direction. The TE mode is a propagation mode in which the longitudinal direction of an electric field is zero and the longitudinal component of a magnetic field is not zero in the propagation direction of electromagnetic waves. The TM mode refers to a propagation mode in which the longitudinal component of the magnetic field is zero and the longitudinal component of the electric field is not zero in the waveguide.

Referring to fig. 40-45 together, fig. 40 is a first polarization tangential plane pattern at 24.5HGz obtained by simulation of the antenna module 300 shown in fig. 35, and fig. 41 is a second polarization tangential plane pattern at 24.5HGz obtained by simulation of the antenna module 300 shown in fig. 35; fig. 42 is a first polarization tangential plane pattern at 37.5HGz obtained by simulation of the antenna module 300 of fig. 35, and fig. 43 is a second polarization tangential plane pattern at 37.5HGz obtained by simulation of the antenna module 300 of fig. 35; fig. 44 is a first polarization tangential plane pattern at 43.5HGz obtained by simulation of the antenna module 300 shown in fig. 35, and fig. 45 is a second polarization tangential plane pattern at 43.5HGz obtained by simulation of the antenna module 300 shown in fig. 35. Wherein the second polarization is perpendicular to the first polarization.

In fig. 40, 42, and 44, the solid line represents the gain of the main polarization (i.e., the first polarization), and the broken line represents the cross-polarization index; in fig. 41, 43, and 45, the dashed line represents the gain of the main polarization (i.e., the second polarization), and the solid line represents the cross-polarization index; the abscissa of fig. 40 to 45 is an angle and the ordinate is dB. As can be seen from fig. 40 to 45, the gain of the antenna module 300 in the full frequency band is above 5dB, and the cross polarization is above 16dB, so as to meet the antenna performance requirement.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application; the embodiments and features of the embodiments of the present application may be combined with each other without conflict. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A key is characterized by comprising a circuit board, a dielectric resonant antenna and a key cap, wherein the dielectric resonant antenna is fixed on the circuit board and electrically connected with the circuit board, the key cap is fixed on the circuit board and wraps the dielectric resonant antenna, and the dielectric constant of the key cap is less than or equal to 6.

2. The key according to claim 1, wherein the number of the dielectric resonator antennas is plural, and the plural dielectric resonator antennas are arranged in an array.

3. The key according to claim 1 or 2, wherein the key cap is made of plastic material, the key cap has a top surface and a peripheral side surface, the top surface of the key cap is located on a side of the dielectric resonator antenna facing away from the circuit board, and the peripheral side surface of the key cap is connected with a periphery of the top surface of the key cap;

the key further comprises a non-metal coating, and the non-metal coating is fixed on the keycap and covers the top surface of the keycap and the peripheral side surface of the keycap.

4. The key according to any one of claims 1 to 3, wherein the dielectric resonator antenna comprises a non-metallic dielectric block and two feeding ports located on the surface of the non-metallic dielectric block, the two feeding ports are arranged at intervals, the non-metallic dielectric block is fixed on the circuit board, and both the two feeding ports are electrically connected with the circuit board to form a dual-polarized dielectric resonator antenna.

5. The key of claim 4, wherein the dielectric resonator antenna further comprises a metal post embedded in the non-metallic dielectric block; alternatively, the first and second electrodes may be,

and the nonmetal medium block is internally provided with an adjusting hole, and the hole wall of the adjusting hole is provided with a metal layer.

6. A key as claimed in any one of claims 1 to 5, wherein the circuit board comprises a circuit board antenna and an antenna feed, the circuit board antenna and the dielectric resonator antenna each being electrically connected to the antenna feed.

7. The key according to any one of claims 1 to 6, wherein the key further comprises a radio frequency chip, the radio frequency chip is fixed on a side of the circuit board facing away from the dielectric resonant antenna, and the radio frequency chip is electrically connected with the circuit board.

8. The key of any one of claims 1-6, further comprising a flexible circuit board having one end electrically connected to the circuit board and another end provided with an electrical connector.

9. The key according to any one of claims 1 to 8, wherein the circuit board is provided with an avoiding hole, the key cap includes a pressing portion and a triggering portion, the pressing portion is fixed on the circuit board and wraps the dielectric resonant antenna, one end of the triggering portion is fixed on the pressing portion, and the other end of the triggering portion protrudes through the avoiding hole relative to the circuit board.

10. The utility model provides a card holds in palm, its characterized in that includes door plant, tray, circuit board and dielectric resonator antenna, the tray is fixed in one side of door plant, the tray is equipped with the draw-in groove, dielectric resonator antenna is fixed in circuit board and electricity is connected the circuit board, the embedding of dielectric resonator antenna the door plant, the circuit board is located the orientation of dielectric resonator antenna one side of tray, the dielectric constant of door plant is less than or equal to 6.

11. The card holder according to claim 10, wherein the number of the dielectric resonator antennas is plural, and the plural dielectric resonator antennas are arranged in an array.

12. The card holder of claim 10 or 11, wherein the door plate is made of a plastic material, and has a top surface located on a side of the dielectric resonator antenna facing away from the circuit board;

the card holds in the palm still includes non-metal coating, non-metal coating is fixed in the door plant just covers the top surface of door plant.

13. The card holder according to any one of claims 10 to 12, wherein the dielectric resonator antenna comprises a non-metallic dielectric block and two feeding ports located on a surface of the non-metallic dielectric block, the two feeding ports are arranged at intervals, the non-metallic dielectric block is fixed to the circuit board, and both the two feeding ports are electrically connected to the circuit board to form a dual-polarized dielectric resonator antenna.

14. The card holder according to any one of claims 10 to 13, wherein the dielectric resonator antenna further comprises a metal post embedded in the non-metal dielectric block; alternatively, the first and second electrodes may be,

15. The card holder according to any one of claims 10 to 14, wherein the circuit board comprises a circuit board antenna and an antenna feed, the circuit board antenna and the dielectric resonator antenna each being connected to the antenna feed.

16. The utility model provides a camera decoration, its characterized in that, includes decoration body, lens, circuit board and medium resonance antenna, the decoration body is equipped with the light trap, the lens is fixed in the decoration body just covers the light trap, medium resonance antenna is fixed in circuit board and electricity are connected the circuit board, the embedding of medium resonance antenna the decoration body just by the lens covers, the circuit board is located medium resonance antenna keeps away from one side of lens, the dielectric constant of decoration body is less than or equal to 6.

17. A camera trim according to claim 16, wherein the trim body is of plastics material, the camera trim further comprising a ferrule secured to the trim body and disposed around the lens, the dielectric resonant antenna and the ferrule being spaced from one another.

18. A camera trim according to claim 16 or 17, wherein the dielectric resonator antenna comprises a non-metallic dielectric block and two feed ports located on a surface of the non-metallic dielectric block, the two feed ports are arranged at an interval from each other, the non-metallic dielectric block is fixed to the circuit board, and both the two feed ports are electrically connected to the circuit board to form a dual-polarized dielectric resonator antenna.

19. A camera trim according to claim 18, wherein the dielectric resonator antenna further comprises a metal post embedded within the non-metallic dielectric block; alternatively, the first and second electrodes may be,

20. A camera trim according to any one of claims 16 to 19, wherein the circuit board comprises a circuit board antenna and an antenna feed, the circuit board antenna and the dielectric resonator antenna each being electrically connected to the antenna feed.

21. A mobile terminal, comprising a frame and the key of any one of claims 1 to 9, wherein the frame is made of metal material, the frame is provided with key holes, the key is disposed through the key holes, and the keycap protrudes from an external surface of the frame.

22. A mobile terminal, comprising a frame, a card holder located inside the frame, and the card holder of any one of claims 10 to 15, wherein the frame is made of metal material, the frame is provided with a card holder insertion hole, the door plate is located in the card holder insertion hole, and the tray is inserted into the card holder.

23. A mobile terminal, comprising a rear cover and the camera decoration of any one of claims 16 to 19, wherein the rear cover is made of a metal material, the rear cover is provided with a camera hole, the camera decoration is disposed through the camera hole, and a lens of the camera decoration is exposed relative to the rear cover.

24. The utility model provides a mobile terminal, its characterized in that, includes casing and structure, the casing adopts metal material, the casing is equipped with the through-hole, the structure wears to locate the through-hole, and it is relative casing part exposes, the structure includes the body and inlays to locate the dielectric resonance antenna of body, the dielectric constant of body is less than or equal to 6, dielectric resonance antenna be used for to the outside transmission electromagnetic wave of casing and/or receipt the electromagnetic wave in the casing outside.