CN117954836A

CN117954836A - Antenna assembly and electronic equipment

Info

Publication number: CN117954836A
Application number: CN202211347912.7A
Authority: CN
Inventors: 张会彬; 孙智勇
Original assignee: Realme Mobile Telecommunications Shenzhen Co Ltd
Current assignee: Realme Mobile Telecommunications Shenzhen Co Ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2024-04-30

Abstract

The application provides an antenna assembly and electronic equipment. The antenna assembly comprises an antenna ground, a first feed source, a first radiator, a second feed source, a second radiator and a first matching circuit; the antenna ground is provided with a first side and a second side which are connected in a bending way; the first feed source provides an excitation signal of a first frequency band; the first radiator is arranged at least corresponding to the first edge and comprises a first grounding end electrically connected to the antenna ground, a first free end and a first feed point electrically connected to the first feed source; the second feed source provides an excitation signal of a second frequency band; the second radiator is arranged at least corresponding to the second side and is provided with a second feed point and a connecting point, and the second radiator is coupled with the first radiator through a coupling gap; the first radiator and the second radiator support the receiving and transmitting of the excitation signals of the first frequency band together, and the second radiator supports the receiving and transmitting of the excitation signals of the second frequency band; one end of the first matching circuit is electrically connected to the other end of the connecting point and grounded to pass through the excitation signal of the first frequency band and block the excitation signal of the second frequency band.

Description

Antenna assembly and electronic equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to an antenna assembly and an electronic device.

Background

With the development of technology, electronic devices such as mobile phones with communication functions have become more and more popular and more powerful. An antenna assembly is typically included in an electronic device to enable communication functions of the electronic device. However, the communication performance of the antenna assembly in the electronic device in the related art is not good enough, and there is room for improvement.

Disclosure of Invention

In a first aspect, the present application provides an antenna assembly comprising:

The antenna ground is provided with a first edge and a second edge which are connected in a bending way;

the first feed source is used for providing excitation signals of a first frequency band;

The first radiator is arranged at least corresponding to the first side, and comprises a first grounding end, a first free end and a first feed point positioned at the first grounding end and the first free end, wherein the first grounding end is electrically connected to the antenna ground, and the first feed point is electrically connected to the first feed source;

the second feed source is used for providing excitation signals of a second frequency band;

The second radiator is arranged corresponding to at least the second side, and is provided with a second feed point and a connection point, a coupling gap is arranged between the second radiator and the first free end, and the second radiator is coupled with the first radiator through the coupling gap, wherein the second radiator and the first radiator support the receiving and transmitting of the excitation signals of the first frequency band together, and the second radiator supports the receiving and transmitting of the excitation signals of the second frequency band; and

And one end of the first matching circuit is electrically connected to the connecting point, the other end of the first matching circuit is grounded, and the first matching circuit is used for blocking excitation signals of the second frequency band and passing through excitation signals of the first frequency band.

In a second aspect, the present application also provides an antenna assembly comprising:

An antenna ground;

The first radiator comprises a first grounding end, a first free end and a first feed point positioned at the first grounding end and the first free end, wherein the first grounding end is electrically connected to the antenna ground, and the first feed point is electrically connected to the first feed source;

the second feed source is used for providing excitation signals of a second frequency band; and

The second radiator is provided with a second feed point and a connecting point, a coupling gap is arranged between the second radiator and the first free end, the second radiator is coupled with the first radiator through the coupling gap, wherein current corresponding to an excitation signal of the first frequency band flows from the first grounding end to the first free end, is coupled to the second radiator through the coupling gap, and flows to the antenna ground through the second radiator; and

In a third aspect, the application also provides an electronic device comprising an antenna assembly as described in the first aspect or comprising an antenna assembly as described in the second aspect.

In summary, when the antenna assembly provided in the embodiment of the present application uses the first frequency band to perform communication, not only the first radiator but also the second radiator may be used, so that the antenna assembly has a smaller directivity coefficient when using the first frequency band to perform communication, and the radiation of each direction is relatively uniform when using the first frequency band to perform communication, so that the antenna assembly has a better communication effect in the first frequency band. In addition, when the antenna assembly has a better communication effect in the first frequency band, the user experience of using the antenna assembly by the user is better. Further, in the antenna assembly provided by the embodiment of the application, the second radiator supports the second frequency band in addition to the first frequency band, so that the second radiator is multiplexed into the radiator supporting the first frequency band and supporting the second frequency band, and therefore, the space utilization rate of the antenna assembly can be improved. Further, the antenna assembly can support a first frequency band and a second frequency band, and can support more communication frequency bands. In addition, when the antenna assembly works in the first frequency band by using the second radiator, the first matching circuit is used for blocking the excitation signal of the second frequency band by the excitation signal of the first frequency band, so that the excitation signal of the second frequency band can be prevented from influencing the excitation signal of the first frequency band supported by the second radiator. Therefore, the antenna assembly provided by the embodiment of the application has a better communication effect in the first frequency band.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of an antenna assembly according to an embodiment of the present application;

Fig. 2 (a) is a schematic diagram illustrating a current direction excited by an excitation signal generated by a first frequency band of an antenna assembly according to the related art;

Fig. 2 (b) is a schematic diagram of a current direction of an excitation signal of a first frequency band generated by a first feed in the antenna assembly shown in fig. 1 on a first radiator and a second radiator;

fig. 3 is a schematic diagram of an antenna assembly according to another embodiment of the present application;

fig. 4 to 9 are schematic diagrams of a first matching circuit provided in each embodiment;

Fig. 10 (a) and (b) are diagrams of the antenna assembly according to the related art and the embodiment of the present application when the antenna assembly is operated in the first frequency band;

FIG. 11 is a schematic diagram of the current drawn by the excitation signal in the first frequency band generated by the first feed in the antenna assembly shown in FIG. 1 when excited on the antenna ground;

Fig. 12 is a perspective view of an electronic device according to an embodiment of the present application;

FIG. 13 is a cross-sectional view taken along line I-I of FIG. 12 in accordance with one embodiment;

Fig. 14 is a perspective view of a part of the structure of the electronic apparatus shown in fig. 12 along the battery cover side.

And (3) main component description:

The electronic device 1, the antenna assembly 10, the middle frame 30, the screen 40, the circuit board 50, the battery cover 60;

an antenna ground 110, a first side 111, a second side 112, a first feed S1;

The first radiator 120, the first grounding end 121, the first free end 122, the first feed point P1 and the second feed source S2;

A second radiator 130, a second ground 131, a second free end 132, a second feeding point P2, and a connection point P3;

The first matching circuit M1, the second matching circuit M2, the third matching circuit M3, the first capacitor C1, the second capacitor C2, the first inductor L1 and the second inductor L2;

The body portion 310, the frame portion 320, the first direction D1, and the second direction D2.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without any inventive effort, are intended to be within the scope of the application.

Reference herein to "an embodiment" or "implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment or implementation may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The present application provides an antenna assembly 10. The antenna assembly 10 may be applied to the electronic device 1 (see fig. 12), and the electronic device 1 includes, but is not limited to, a device having a communication function, such as a mobile phone, an internet device (mobile INTERNET DEVICE, MID), an electronic book, a portable player station (Play Station Portable, PSP), or a Personal digital assistant (Personal DIGITAL ASSISTANT, PDA).

Referring to fig. 1, fig. 1 is a schematic diagram of an antenna assembly according to an embodiment of the application. The antenna assembly 10 includes an antenna ground 110, a first feed S1, a first radiator 120, a second feed S2, and a second radiator 130. The antenna ground 110 has a first side 111 and a second side 112 connected in a bent manner. The first feed source S1 is used for providing excitation signals of a first frequency band. The first radiator 120 is disposed at least corresponding to the first side 111. The first radiator 120 includes a first grounding end 121, a first free end 122, and a first feeding point P1 located at the first grounding end 121 and the first free end 122. The first ground 121 is electrically connected to the antenna ground 110, and the first feeding point P1 is electrically connected to the first feed S1. The second feed source S2 is used for providing excitation signals of a second frequency band. The second radiator 130 is disposed at least corresponding to the second side 112, the second radiator 130 has a second feeding point P2, a coupling gap 130a is disposed between the second radiator 130 and the first free end 122, and the second radiator 130 is coupled to the first radiator 120 through the coupling gap 130 a. The second radiator 130 and the first radiator 120 support the transmission and reception of the excitation signal of the first frequency band, and the second radiator 130 supports the transmission and reception of the excitation signal of the second frequency band.

In one embodiment, the antenna ground 110 may be embodied in a form including, but not limited to, a metal conductive plate, a metal conductive layer molded into the flexible circuit board, into the rigid circuit board 50, or the like. The antenna ground 110 of the antenna assembly 10 may also be a reference ground in the electronic device 1 to which the antenna assembly 10 is applied, for example, the antenna ground 110 of the antenna assembly 10 may be a middle frame 30 in the electronic device 1. In the present embodiment, the antenna ground 110 is taken as an example of the middle frame 30 of the electronic device 1, and the present application is not limited to the embodiment.

The antenna ground 110 has a first side 111 and a second side 112 connected in a bent manner. In the schematic diagram of this embodiment, the connection between the first edge 111 and the second edge 112 is arc-shaped, the first edge 111 is a left edge, and the second edge 112 is a top edge for illustration. It should be understood that, in other embodiments, the connection between the first edge 111 and the second edge 112 may be a right angle or an oblique angle, and the shape of the connection between the first edge 111 and the second edge 112 is not limited in the present application. It will be appreciated that in other embodiments, the first edge 111 may be a top edge and the second edge 112 may be a left edge; or in other embodiments, the first side 111 is a top side and the second side 112 is a right side; or in other embodiments, the first side 111 is the right side and the second side 112 is the top side; or in other embodiments, the first edge 111 is a left edge and the second edge 112 is a bottom edge; or in other embodiments, the first edge 111 is a bottom edge and the second edge 112 is a left edge; or the first side 111 is a right side and the second side 112 is a bottom side; alternatively, the first side 111 may be a bottom side, and the second side 112 may be a left side, or the like, so long as the first side 111 and the second side 112 are bent and connected. It should be understood that the first side 111 and the second side 112 illustrated in the schematic diagram of the present embodiment should not be construed as limiting the antenna ground 110 provided in the embodiment of the present application.

In an embodiment, the excitation signal of the first frequency band provided by the first feed source S1 is Wifi 2.4G (the frequency band range is 2.4 GHz-2.483 GHz); in another embodiment, the excitation signals of the first frequency band provided by the first feed source S1 are Wifi 2.4G and Wifi 5G. In this embodiment, the excitation signal of the first frequency band provided by the first feed source S1 is described as Wifi 2.4G.

The first radiator 120 is disposed at least corresponding to the first edge 111 and includes: all of the first radiators 120 are disposed corresponding to the first sides 111, or all of the first radiators 120 are disposed corresponding to the first sides 111. In the schematic diagram of the present embodiment, a portion of the first radiator 120 is disposed corresponding to the first side 111, and another portion of the first radiator 120 is disposed corresponding to the second side 112. In the present embodiment, the first radiator 120 is provided corresponding to the first side 111, and this means that the first radiator 120 is provided outside the first side 111.

The first radiator 120 may be, but is not limited to, a Laser Direct Structuring (LDS) radiator, or a flexible circuit board (Flexible Printed Circuit, FPC) radiator, or a Printed Direct Structuring (PDS) radiator, or a metal branch radiator. When the antenna assembly 10 is applied to the electronic device 1, the first radiator 120 may be a structural antenna (MECHANICAL DESIGN ANTENNA, MDA) radiator designed by using the metal of the electronic device 1 itself. For example, the first radiator 120 may be an antenna radiator designed by using a middle frame 30 (fig. 13) formed by plastic and metal of the electronic device 1. In addition, the first radiator 120 may be a metal branch antenna radiator designed for the metal middle frame 30.

It is to be understood that the shape, structure and material of the first radiator 120 are not particularly limited in the present application, and the shape of the first radiator 120 includes, but is not limited to, a bent shape, a strip shape, a sheet shape, a rod shape, a coating, a film, etc. When the first radiator 120 is in a strip shape, the extending track of the first radiator 120 is not limited in the present application, so the first radiator 120 can be in a linear, curved, multi-section bending track extension. The first radiator 120 may be a line with a uniform width on the extending track, or may be a bar with a gradual width change and a widening area with an unequal width.

Referring to fig. 1, the first radiator 120 is bent, and the first grounding end 121 and the first free end 122 are opposite ends of the first radiator 120. In other embodiments, the first radiator 120 is in a linear shape, the first grounding end 121 and the first free end 122 are opposite along a linear direction, and the first grounding end 121 and the first free end 122 are two ends of the first radiator 120.

Means for electrically connecting the first ground 121 to the antenna ground 110 include, but are not limited to, direct electrical connection (e.g., soldering); or indirectly and electrically connected by means of coaxial lines, microstrip lines, radio frequency lines, conductive spring plates, conductive adhesives, insert metals, or connecting materials of the middle frame 30 of the electronic equipment 1.

For example, referring to fig. 13, the middle frame 30 of the electronic device 1 includes a main body portion 310 and a frame portion 320. The frame portion 320 is disposed at a periphery of the body portion 310, and the frame portion 320 is bent and connected to the body portion 310. In one embodiment, the first radiator 120 may be formed on the frame portion 320. The body portion 310 constitutes a ground pole. The first grounding end 121 is connected to the body portion 310 through a connecting material between the frame portion 320 and the body portion 310, so as to be grounded.

The specific position of the first feeding point P1 on the first radiator 120 is not limited in the present application, as long as the first feeding point P1 is located between the first grounding end 121 and the first free end 122.

The first feed point P1 is electrically connected to the first feed source S1, in other words, the first feed source S1 is electrically connected to the first feed point P1. The first feed source S1 may be electrically connected to the first feed point P1 by, but not limited to, direct electrical connection (such as soldering); or indirectly and electrically connected by coaxial lines, microstrip lines, radio frequency lines, conductive spring plates, conductive adhesives, and the like.

As can be seen from the fact that the first ground 121 and the first feeding point P1 of the first radiator 120 are electrically connected to the first feed source S1, the first radiator 120 is an inverted-F antenna (IFA). In an embodiment, the excitation signal of the second frequency Band provided by the second feed source S2 includes at least one of a GPS L1 frequency Band, a GPS L5 frequency Band, a low frequency (LB) frequency Band, a medium-High frequency (MIDDLE HIGH Band, MHB) frequency Band, or an Ultra High frequency (UHB) frequency Band. The mid-High frequency Band includes a mid-frequency (MB) Band and a High-frequency (HB) Band. For example, in one embodiment, the excitation signal of the second frequency band provided by the second feed source S2 includes a GPS L1 frequency band; in another embodiment, the excitation signal of the second frequency band provided by the second feed source S2 includes a GPS L5 frequency band; in yet another embodiment, the excitation signal of the second frequency band provided by the second feed source S2 includes a GPS L1 frequency band and an N78 frequency band of the UHB frequency band; in yet another embodiment, the excitation signal of the second frequency band provided by the second feed source S2 includes a GPS L5 frequency band and an N78 frequency band of the UHB frequency band.

In combination with the case of the excitation signal of the second frequency band provided by the first feed S1 as previously described. The first frequency band comprises a WiFi 2.4G frequency band, or a WiFi 2.4G frequency band and a WiFi 5G frequency band; the second frequency band includes at least one of a GPS L1 frequency band, or a GPS L5 frequency band, or a low frequency band, or a medium-high frequency band, or an ultra-high frequency band.

The range of the LB frequency band is as follows: f < 1000 MHz. The range of the MHB frequency band is as follows: f is less than or equal to 1000MHz and less than 3000MHz, and the MB frequency band is as follows: 1000 MHz.ltoreq.f < 2200MHz, e.g. B3 band or B1 band. The HB frequency range is 2200 MHz.ltoreq.f < 3000MHz, such as the B40 frequency range, or B41. The UHB frequency range is more than or equal to 3000MHz and less than 10000MHz. It should be noted that the GPS mentioned herein means positioning, including but not limited to global positioning system (Global Positioning System, GPS) positioning, beidou positioning, GLONASS positioning, GALILEO positioning, and the like. The resonance frequency point of the GPS L1 frequency band is 1575.42MHz. The resonance frequency point of the GPS L5 frequency band is 1176MHz.

The second radiator 130 may be, but is not limited to, a Laser Direct Structuring (LDS) radiator, or a flexible circuit board (Flexible Printed Circuit, FPC) radiator, or a Printed Direct Structuring (PDS) radiator, or a metal branch radiator. When the antenna assembly 10 is applied to the electronic device 1, the second radiator 130 may be a structural antenna (MECHANICAL DESIGN ANTENNA, MDA) radiator designed by using the metal of the electronic device 1 itself. For example, the second radiator 130 may be an antenna radiator designed by using a middle frame 30 (fig. 13) formed by plastic and metal of the electronic device 1. In addition, the second radiator 130 may be a metal branch antenna radiator designed for the metal middle frame 30.

It is to be understood that the shape, structure and material of the second radiator 130 are not particularly limited in the present application, and the shape of the second radiator 130 includes, but is not limited to, a bent shape, a strip shape, a sheet shape, a rod shape, a coating, a film, etc. When the second radiator 130 is in a strip shape, the extending track of the second radiator 130 is not limited in the present application, so the second radiator 130 can be in a linear, curved, multi-section bending track extension. The second radiator 130 may be a line with a uniform width on the extending track, or may be a bar with a gradual width change and a widening area.

Referring to fig. 1, in the present embodiment, the second radiator 130 is in a straight line shape, and in other embodiments, the second radiator 130 may be in a bent shape.

The second radiator 130 and the first free end 122 have a coupling slit 130a therebetween, and the second radiator 130 is coupled with the first radiator 120 through the coupling slit 130 a. In other words, the second radiator 130 and the first radiator 120 can be capacitively coupled through the coupling slit 130 a. The width of the coupling slit 130a may be 0.5 to 2mm, but is not limited to this size.

The second radiator 130 is coupled to the first radiator 120 through the coupling slot 130a, which means that the second radiator 130 is capacitively coupled to the first radiator 120 through the coupling slot 130 a. The "capacitive coupling" refers to that an electric field is generated between the first radiator 120 and the second radiator 130, a signal of the first radiator 120 can be transmitted to the second radiator 130 through the electric field, and a signal of the second radiator 130 can be transmitted to the first radiator 120 through the electric field, so that the first radiator 120 and the second radiator 130 can realize electric signal conduction even in a state of not directly contacting or not directly connecting.

The second ground 131 is electrically connected to the antenna ground 110. The second ground 131 is electrically connected to the antenna ground 110 by means including, but not limited to, direct electrical connection (e.g., soldering); or indirectly and electrically connected by means of coaxial lines, microstrip lines, radio frequency lines, conductive spring plates, conductive adhesives, insert metals, or connecting materials of the middle frame 30 of the electronic equipment 1.

For example, referring to fig. 13, the middle frame 30 of the electronic device 1 includes a main body portion 310 and a frame portion 320. The frame portion 320 is disposed at a periphery of the body portion 310, and the frame portion 320 is bent and connected to the body portion 310. In one embodiment, the second radiator 130 may be formed on the frame portion 320. The body portion 310 constitutes a ground pole. The second grounding end 131 is connected to the body portion 310 through a connecting material between the frame portion 320 and the body portion 310, so as to be grounded.

The specific position of the second feeding point P2 on the second radiator 130 is not limited in the present application, as long as the second feeding point P2 is located between the second grounding end 131 and the second free end 132.

The second feed point P2 is electrically connected to the second feed source S2, in other words, the second feed source S2 is electrically connected to the second feed point P2. The manner in which the second feed source S2S1 is electrically connected to the second feed point P2 may be, but is not limited to, a direct electrical connection (such as soldering); or indirectly and electrically connected by coaxial lines, microstrip lines, radio frequency lines, conductive spring plates, conductive adhesives, and the like.

Referring to fig. 2 (a) and fig. 2 (b), fig. 2 (a) is a schematic diagram illustrating a current direction excited by an excitation signal generated by a first frequency band of an antenna assembly according to the related art; fig. 2 (b) is a schematic diagram of current directions of excitation signals of a first frequency band generated by the first feed in the antenna assembly shown in fig. 1 on the first radiator and the second radiator. It will be appreciated that fig. 2 (a) is an antenna assembly in the related art, and is not prior art. As can be seen from fig. 2 (a), the excitation signal of the first frequency band generated by the first feed source S1 in the related art flows from the first ground terminal 121 to the first free terminal 122, and is not distributed on the second radiator 130. As can be seen from fig. 2 (b), the excitation current of the first frequency band generated by the first feed source S1 flows from the first ground terminal 121 to the first free terminal 122, and also flows from the second ground terminal 131 to the first free terminal 122. It can be seen that the second radiator 130 and the first radiator 120 support the first frequency band together. It can be seen that the excitation current in the first frequency band generated by the first feed source S1 uses not only the first radiator 120 but also the second radiator 130.

In summary, when the antenna assembly 10 provided in the embodiment of the present application uses the first frequency band to perform communication, not only the first radiator 120 but also the second radiator 130 may be used, so that the antenna assembly 10 has a smaller directivity coefficient when using the first frequency band to perform communication, and the radiation of each direction is relatively uniform when using the first frequency band to perform communication, so that the antenna assembly 10 has a better communication effect in the first frequency band. In addition, when the antenna assembly 10 has a better communication effect in the first frequency band, the user experience of using the antenna assembly 10 is better. Further, in the antenna assembly 10 provided by the embodiment of the present application, the second radiator 130 supports the second frequency band in addition to the first frequency band, so that it can be seen that the second radiator 130 is multiplexed to be a radiator supporting the first frequency band and supporting the second frequency band, and therefore, the space utilization of the antenna assembly 10 can be improved. Further, the antenna assembly 10 can support the first frequency band and the second frequency band, and can support more communication frequency bands.

In this embodiment, the first grounding end 121 is disposed corresponding to the first edge 111, and the first free end 122 is disposed corresponding to the second edge 112; all parts of the second radiator 130 are disposed corresponding to the second side 112.

In this embodiment, the first grounding end 121 is disposed corresponding to the first edge 111, and the first free end 122 is disposed corresponding to the second edge 112, so that the first radiator 120 is disposed corresponding to a corner where the first edge 111 and the second edge 112 are bent and connected. Therefore, the first radiator 120 is not easily shielded by other components in the electronic device 1 to which the antenna assembly 10 is applied, so that the antenna assembly 10 has a better communication effect.

In this embodiment, the second radiator 130 includes a second ground terminal 131 and a second free terminal 132, the second ground terminal 131 is electrically connected to the antenna ground 110, the coupling slot 130a is disposed between the second ground terminal 131 and the first free terminal 122, and the second feeding point P2 is disposed between the second ground terminal 131 and the second free terminal 132.

In this embodiment, the second free end 132 is opposite to the first free end 122 compared to the second ground end 131.

Referring to fig. 3, fig. 3 is a schematic diagram of an antenna assembly according to another embodiment of the application. The second radiator 130 includes a second ground end 131 and a second free end 132, the second ground end 131 is electrically connected to the antenna ground 110, the second free end 132 and the first free end 122 have the coupling slot 130a therebetween, and the second feeding point P2 is located between the second ground end 131 and the second free end 132.

In the present embodiment, the second grounding end 131 is opposite to the first free end 122 compared to the second free end 132.

In the structure of the antenna assembly 10 shown in fig. 1 and fig. 3 according to the embodiment of the present application, the first radiator 120 and the second radiator 130 in the antenna assembly 10 can jointly support the transmission and reception of the excitation signal in the first frequency band, so that the antenna assembly 10 has a smaller directivity coefficient, and the radiation of the antenna assembly 10 in all directions is relatively uniform when the antenna assembly 10 uses the first frequency band for communication, so that the antenna assembly 10 has a better communication effect in the first frequency band. In addition, when the antenna assembly 10 has a better communication effect in the first frequency band, the user experience of using the antenna assembly 10 is better.

With continued reference to fig. 1 and 3, the second radiator 130 further has a connection point P3. The antenna assembly 10 further comprises a first matching circuit M1. One end of the first matching circuit M1 is electrically connected to the connection point P3, and the other end is grounded, where the first matching circuit M1 is configured to pass through an excitation signal of a first frequency band and block an excitation signal of a second frequency band.

Therefore, when the antenna assembly 10 operates in the first frequency band using the second radiator 130, the first matching circuit M1 is configured to pass the excitation signal of the first frequency band and block the excitation signal of the second frequency band, so as to prevent the excitation signal of the second frequency band from affecting the excitation signal of the first frequency band supported by the second radiator 130. Therefore, the antenna assembly 10 provided in the embodiment of the present application has a better communication effect in the first frequency band.

Referring to fig. 1 and 3, the antenna assembly 10 further includes a second matching circuit M2 and a third matching circuit M3. The second feed source S2 electrically connects the second matching circuit M2 to the second feed point P2. One end of the third matching circuit M3 is electrically connected to the second ground 131, and the other end is grounded. The second matching circuit M2 and the third matching circuit M3 are used together to block the excitation signal of the first frequency band and pass through the excitation signal of the second frequency band.

When the antenna assembly 10 operates in the second frequency band by using the second radiator 130, the second matching circuit M2 and the third matching circuit M3 are used together to block the excitation signal of the first frequency band and pass through the excitation signal of the second frequency band, so that the excitation signal of the first frequency band can be prevented from affecting the excitation signal of the second frequency band supported by the second radiator 130. Therefore, the antenna assembly 10 provided in the embodiment of the present application has a better communication effect in the second frequency band.

Referring to fig. 4 to 9, fig. 4 to 9 are schematic diagrams of a first matching circuit according to various embodiments. The first matching circuit M1 includes any one of the following cases. It should be understood that, although components included in the first matching circuit M1 are described in fig. 4 to 9. It will be appreciated that the second matching circuit M2 may also include any of the circuits shown in fig. 4 to 9. It will be appreciated that the third matching circuit M3 may also include any of the circuits shown in fig. 4 to 9. In other words, the first matching circuit M1, the second matching circuit M2, or the third matching circuit M3 includes any one of the following circuits.

In fig. 4, a parallel circuit is formed by the first inductor L1 and the first capacitor C1.

In fig. 5, a series circuit of a first inductor L1 and a first capacitor C1 is shown.

In fig. 6, a first inductor L1, a first capacitor C1 and a second capacitor C2 are connected in parallel, and the first inductor L1 and the first capacitor C1 form a parallel unit, and the parallel unit is connected in series with the second capacitor C2.

In fig. 7, a first inductor L1, a first capacitor C1 and a second capacitor C2 are connected in series, and the first inductor L1 and the first capacitor C1 form a series unit, and the series unit is connected in parallel with the second capacitor C2.

In fig. 8, a first inductor L1, a second inductor L2 and a first capacitor C1 are connected in parallel, and the first inductor L1 and the first capacitor C1 form a parallel unit, and the parallel unit is connected in series with the second inductor L2.

In fig. 9, a first inductor L1, a second inductor L2 and a first capacitor C1 are connected in series, and the first inductor L1 and the first capacitor C1 form a series unit, and the series unit is connected in parallel with the second inductor L2.

When the first matching circuit M1 includes any one of fig. 4 to 9, the first matching circuit M1 may well realize that the excitation signal of the first frequency band passes through and blocks the excitation signal of the second frequency band, so as to prevent the excitation signal of the second frequency band from affecting the excitation signal of the first frequency band supported by the second radiator 130. Therefore, the antenna assembly 10 provided in the embodiment of the present application has a better communication effect in the first frequency band.

When the second matching circuit M2 includes any one of fig. 4 to 9, the second matching circuit M2 may better realize that the excitation signal of the second frequency band passes through and blocks the excitation signal of the first frequency band, so as to prevent the excitation signal of the first frequency band from affecting the excitation signal of the second frequency band supported by the second radiator 130. Therefore, the antenna assembly 10 provided in the embodiment of the present application has a better communication effect in the second frequency band.

When the third matching circuit M3 includes any one of fig. 4 to 9, the second matching circuit M2 may well realize that the excitation signal of the second frequency band passes through and blocks the excitation signal of the first frequency band, so as to prevent the excitation signal of the first frequency band from affecting the excitation signal of the second frequency band supported by the second radiator 130. Therefore, the antenna assembly 10 provided in the embodiment of the present application has a better communication effect in the second frequency band.

It should be understood that, when the first matching circuit M1, the second matching circuit M2, or the third matching circuit M3 includes any one of the above circuits, it does not mean that the values of the same components in the circuits are the same when the first matching circuit M1, the second matching circuit M2, and the third matching circuit M3 include the same circuit. For example, if the first matching circuit M1 and the second matching circuit M2 both include the circuit in fig. 6, it does not mean that the inductance value of the first inductor L1 in the first matching circuit M1 is the same as the inductance value of the first inductor L1 in the second matching circuit M2; accordingly, it does not mean that the capacitance value of the first capacitor C1 in the first matching circuit M1 is the same as the capacitance value of the first capacitor C1 in the second matching circuit M2; accordingly, it does not mean that the capacitance value of the second capacitor C2 in the first matching circuit M1 is the same as the capacitance value of the second capacitor C2 in the second matching circuit M2.

Referring to fig. 10, fig. 10 (a) and (b) are diagrams of an antenna assembly according to the related art and an embodiment of the present application when the antenna assembly is operating in a first frequency band. Fig. 10 (a) is a diagram of the antenna assembly 10 (see fig. 2 (a)) in the related art when operating in the first frequency band, and fig. 10 (b) is a diagram of the antenna assembly 10 in the embodiment of the present application when operating in the first frequency band. As can be seen from fig. 10 (a), in the related art, when the antenna assembly 10 works in the first frequency band, the directivity coefficient is relatively large (5.8 dBi), which means that the radiation of each direction is not uniform when the antenna assembly 10 uses the first frequency band to perform communication, and the communication effect when the antenna assembly 10 uses the first frequency band to perform communication is poor under certain angles, so that the experience of using the first frequency band to perform communication is affected. As can be seen from fig. 10 (b), the directivity coefficient of the antenna assembly 10 provided in the embodiment of the present application is smaller (4.8 dBi, which is 1.0dBi smaller than the directivity coefficient in the related art) when the antenna assembly 10 works in the first frequency band, the directivity coefficient is smaller, which means that the radiation of the antenna assembly 10 in each direction is more uniform when the antenna assembly 10 uses the first frequency band to perform communication, and the communication effect of the antenna assembly 10 in each angle when the antenna assembly 10 uses the first frequency band to perform communication is better, thereby improving the experience of using the first frequency band to perform communication.

With continued reference to fig. 1 and 2 (b), the antenna assembly 10 includes an antenna ground 110, a first feed S1, a first radiator 120, a second feed S2, and a second radiator 130. The first feed source S1 is used for providing excitation signals of a first frequency band. The first radiator 120 includes a first grounding end 121, a first free end 122, and a first feeding point P1 located at the first grounding end 121 and the first free end 122. The first ground 121 is electrically connected to the antenna ground 110, and the first feeding point P1 is electrically connected to the first feed S1. The second feed source S2 is used for providing excitation signals of a second frequency band. The second radiator 130 has a second feeding point P2, a coupling slot 130a is provided between the second radiator 130 and the first free end 122, and the second radiator 130 is coupled to the first radiator 120 through the coupling slot 130 a. The current corresponding to the excitation signal in the first frequency band flows from the first ground terminal 121 to the first free terminal 122, is coupled to the second radiator 130 through the coupling slot 130a, and flows to the antenna ground 110 through the second radiator 130.

The antenna ground 110, the first feed source S1, the first radiator 120, the second feed source S2, the second radiator 130, the first frequency band, the second frequency band, etc. refer to the description of the foregoing embodiments, and are not repeated herein.

Excitation current of the first frequency band generated by the first feed source S1 flows from the first ground terminal 121 to the first free terminal 122, and also flows from the second ground terminal 131 to the first free terminal 122. It can be seen that the second radiator 130 and the first radiator 120 support the first frequency band together. It can be seen that the excitation current in the first frequency band generated by the first feed source S1 uses not only the first radiator 120 but also the second radiator 130.

Referring to fig. 11, fig. 11 is a schematic diagram of a current generated when an excitation signal of a first frequency band generated by a first feed source in the antenna assembly shown in fig. 1 is excited on the antenna ground. The antenna ground 110 has a first side 111 and a second side 112 connected in a bent manner. The first edge 111 extends along a first direction D1, and the first direction D1 faces away from the second edge 112. The second edge 112 extends along a second direction D2, and the second direction D2 is directed toward the first edge 111. The excitation signal of the first frequency band excites a first current I1 at the antenna ground 110 via the first radiator 120, wherein the first current I1 is along a first direction D1. The excitation signal of the first frequency band excites a second current I2 via the second radiator 130 at the antenna ground 110, wherein the second current I2 is in a second direction D2.

In this embodiment, the first direction D1 is vertically downward, and the second direction D2 is horizontally leftward. It will be appreciated that, as the placement of the antenna assembly 10 is different, the first direction D1 is different from the second direction D2. In one embodiment, the first direction D1 is perpendicular to the second direction D2, and in another embodiment, the first direction D1 and the second direction D2 are disposed at an angle, and are not perpendicular.

In this embodiment, the excitation signal of the first frequency band excites the second current I2 on the antenna ground 110, which is different from the first current I1, so that the antenna assembly 10 has a smaller directivity coefficient when communicating with the first frequency band, and the antenna assembly 10 has a better communication effect in the first frequency band because the radiation of the antenna assembly 10 in all directions is more uniform when communicating with the first frequency band. In addition, when the antenna assembly 10 has a better communication effect in the first frequency band, the user experience of using the antenna assembly 10 is better.

In the present embodiment, the first side 111 is a long side of the antenna ground 110, and the second side 112 is a short side of the antenna ground 110. When the first side 111 is a long side of the antenna ground 110 and the second side 112 is a short side of the antenna ground 110, the first current I1 is along the first direction D1, and thus, the first current I1 may also be regarded as a direction along the long side, and the first current I1 may also be referred to as a longitudinal current; accordingly, the second current I2 is along the direction of the short side, which second current I2 is also referred to as lateral current.

In other embodiments, the first side 111 is a short side of the antenna ground 110, and the second side 112 is a long side of the antenna ground 110. When the first side 111 is a short side of the antenna ground 110 and the second side 112 is a long side of the antenna ground 110, the first current I1 is along the first direction D1, and thus, the first current I1 may also be regarded as a direction along the short side, and the first current I1 may also be referred to as a lateral current; accordingly, the second current I2 is along the direction of the long side, which second current I2 is also referred to as longitudinal current.

The present application also provides an electronic device 1, where the electronic device 1 includes, but is not limited to, a device having a communication function, such as a mobile phone, an internet device (mobile INTERNET DEVICE, MID), an electronic book, a portable player station (Play Station Portable, PSP), or a Personal digital assistant (Personal DIGITAL ASSISTANT, PDA). Referring to fig. 12, fig. 13 and fig. 14 together, fig. 12 is a perspective view of an electronic device according to an embodiment of the present application; FIG. 13 is a cross-sectional view taken along line I-I of FIG. 12 in accordance with one embodiment; fig. 14 is a perspective view of a part of the structure of the electronic apparatus shown in fig. 12 along the battery cover side. In fig. 14, only the structure of the battery cover 60 and the antenna assembly 10 is illustrated, and the rest is not illustrated. The electronic device 1 comprises an antenna assembly 10 according to any of the previous embodiments. The antenna assembly 10 is described above, and will not be described in detail herein.

The electronic device 1 comprises a middle frame 30. In this embodiment, the middle frame 30 is an antenna ground 110 of the antenna assembly 10. The middle frame 30 is made of metal, such as aluminum magnesium alloy. The middle frame 30 generally forms a ground for the electronic device 1, and when the electronic components in the electronic device 1 need to be grounded, the middle frame 30 may be connected to ground. In addition, the ground system in the electronic device 1 includes, in addition to the middle frame 30, a ground in the circuit board 50 and a ground in the screen 40.

In this embodiment, the electronic device 1 further includes a screen 40, a circuit board 50, and a battery cover 60. The screen 40 may be a display screen with display function, or may be a screen 40 integrated with display and touch functions. The screen 40 is used for displaying text, images, video, etc. The screen 40 is carried on the middle frame 30 and is located at one side of the middle frame 30. The circuit board 50 is also typically carried by the center frame 30, and the circuit board 50 and the screen 40 are carried by opposite sides of the center frame 30. At least one or more of the first feed S1, the second feed S2, the first matching circuit M1, the second matching circuit M2, and the third matching circuit M3 in the antenna assembly 10 described above may be disposed on the circuit board 50. The battery cover 60 is disposed on a side of the circuit board 50 facing away from the middle frame 30, and the battery cover 60, the middle frame 30, the circuit board 50, and the screen 40 cooperate with each other to assemble a complete electronic device 1. It should be understood that the structural description of the electronic device 1 is merely a description of one form of the structure of the electronic device 1, and should not be construed as a limitation of the electronic device 1 or of the antenna assembly 10.

In other embodiments, the first radiator 120 is an FPC antenna radiator or an LDS antenna radiator, or a PDS antenna radiator, or a metal stub; the second radiator 130 is an FPC antenna radiator, an LDS antenna radiator, a PDS antenna radiator, or a metal branch. The first radiator 120 may be disposed at an edge of the middle frame 30 and electrically connected to the middle frame 30.

When the middle frame 30 is used as the antenna ground 110 of the antenna assembly 10, the first radiator 120 is electrically connected to the middle frame 30, and the first radiator 120 may be connected to the middle frame 30 through a connecting rib, or the first radiator 120 may be electrically connected to the middle frame 30 through a conductive spring. Likewise, the second radiator 130 is electrically connected to the middle frame 30, and the second radiator 130 may be connected to the ground of the middle frame 30 through a connection rib, or the second radiator 130 may be electrically connected to the middle frame 30 through a conductive spring.

While embodiments of the present application have been shown and described above, it should be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and alternatives to the above embodiments may be made by those skilled in the art within the scope of the application, which is also to be regarded as being within the scope of the application.

Claims

1. An antenna assembly, the antenna assembly comprising:

2. The antenna assembly of claim 1, wherein the first ground terminal is disposed corresponding to the first side and the first free terminal is disposed corresponding to the second side; all parts of the second radiator are arranged corresponding to the second side.

3. The antenna assembly of claim 2, wherein the second radiator includes a second ground terminal and a second free terminal, the second ground terminal being electrically connected to an antenna ground, the second ground terminal and the first free terminal having the coupling gap therebetween, the second feed point being located between the second ground terminal and the second free terminal.

4. The antenna assembly of claim 2, wherein the second radiator includes a second ground terminal and a second free terminal, the second ground terminal being electrically connected to an antenna ground, the second free terminal and the first free terminal having the coupling gap therebetween, the second feed point being located between the second ground terminal and the second free terminal.

5. The antenna assembly of claim 1, wherein the antenna assembly further comprises:

A second matching circuit, the second feed electrically connecting the second matching circuit to the second feed point; and

And one end of the third matching circuit is electrically connected to the second grounding end, the other end of the third matching circuit is grounded, and the second matching circuit and the third matching circuit are jointly used for blocking excitation signals of the first frequency band and passing through excitation signals of the second frequency band.

6. The antenna assembly of claim 5, wherein the first matching circuit, or the second matching circuit, or the third matching circuit comprises any one of:

A parallel circuit consisting of a first inductor and a first capacitor;

A series circuit consisting of a first inductor and a first capacitor;

the first inductor is connected with the first capacitor in parallel to form a parallel unit, and the parallel unit is connected with the second capacitor in series;

The first inductor is connected with the first capacitor in series to form a series unit, and the series unit is connected with the second capacitor in parallel;

the first inductor is connected with the first capacitor in parallel to form a parallel unit, and the parallel unit is connected with the second inductor in series;

the first inductor is connected with the first capacitor in series to form a series unit, and the series unit is connected with the second inductor in parallel.

7. The antenna assembly of claim 1, wherein the first frequency band comprises a WiFi 2.4G frequency band, or a WiFi 2.4G frequency band and a WiFi 5G frequency band; the second frequency band includes at least one of a GPS L1 frequency band, or a GPS L5 frequency band, or a low frequency band, or a medium-high frequency band, or an ultra-high frequency band.

8. An antenna assembly, the antenna assembly comprising:

An antenna ground;

9. The antenna assembly of claim 8 wherein the antenna ground has first and second sides connected by a bend, the first side extending in a first direction and the first direction facing away from the second side, the second side extending in a second direction and the second direction pointing toward the first side;

the excitation signal of the first frequency band is a first current excited on the antenna ground by the first radiator, wherein the first current is along a first direction;

The excitation signal of the first frequency band excites a second current on the antenna ground through the second radiator, wherein the second current is along a second direction.

10. The antenna assembly of claim 9, wherein the first ground terminal is disposed corresponding to the first side and the first free terminal is disposed corresponding to the second side; all parts of the second radiator are arranged corresponding to the second side.

11. The antenna assembly of claim 10, wherein the second radiator includes a second ground terminal and a second free terminal, the second ground terminal being electrically connected to an antenna ground, the second ground terminal and the first free terminal having the coupling gap therebetween, the second feed point being located between the second ground terminal and the second free terminal.

12. The antenna assembly of claim 10, wherein the second radiator includes a second ground terminal and a second free terminal, the second ground terminal being electrically connected to an antenna ground, the second free terminal and the first free terminal having the coupling gap therebetween, the second feed point being located between the second ground terminal and the second free terminal.

13. The antenna assembly of claim 8, wherein the antenna assembly further comprises:

14. The antenna assembly of claim 13, wherein the first matching circuit, or the second matching circuit, or the third matching circuit comprises any one of:

A parallel circuit consisting of a first inductor and a first capacitor;

A series circuit consisting of a first inductor and a first capacitor;

15. The antenna assembly of claim 8, wherein the first frequency band comprises a WiFi 2.4G frequency band, or a WiFi 2.4G frequency band and a WiFi 5G frequency band; the second frequency band includes at least one of a GPS L1 frequency band, or a GPS L5 frequency band, or a low frequency band, or a medium-high frequency band, or an ultra-high frequency band.

16. An electronic device comprising an antenna assembly according to any of claims 1-15.