CN118263676A

CN118263676A - Antenna system and electronic device

Info

Publication number: CN118263676A
Application number: CN202211681084.0A
Authority: CN
Inventors: 罗智杰
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2024-06-28

Abstract

The application provides an antenna system and electronic equipment. The antenna system comprises a radio frequency signal source, a reference floor and an antenna radiator. The reference floor comprises a first grounding part and a second grounding part which are connected, wherein the first grounding part and the second grounding part can be bent relative to the bending axis so as to enable the reference floor to be in a hovering state. The antenna radiator is arranged at one side of the first grounding part, the feed point of the antenna radiator is electrically connected with the radio frequency signal source, the grounding point of the antenna radiator is electrically connected with the first grounding part, the distance between the feed point of the antenna radiator and the bending axis is D1, the distance between one end of the second grounding part far away from the first grounding part and the bending axis is D2,The antenna system and the electronic equipment provided by the application have better antenna performance under a specific state.

Description

Antenna system and electronic device

Technical Field

The application relates to the technical field of wireless technology, in particular to an antenna system and electronic equipment.

Background

The state change of the electronic device may have a certain influence on its antenna performance. In the related art, an antenna performance of an electronic device in a specific state (for example, a hovering state) is poor, which affects user experience.

Disclosure of Invention

The application provides an antenna system and electronic equipment capable of improving antenna performance in a specific state.

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

A radio frequency signal source;

the reference floor comprises a first grounding part and a second grounding part which are connected, wherein the first grounding part and the second grounding part can be bent relative to a bending axis so as to enable the reference floor to be in a hovering state; and

The antenna radiator is arranged on one side of the first grounding part, the feed point of the antenna radiator is electrically connected with the radio frequency signal source, the grounding point of the antenna radiator is electrically connected with the first grounding part, the distance between the feed point of the antenna radiator and the bending axis is D1, the distance between one end of the second grounding part far away from the first grounding part and the bending axis is D2, wherein,Λ is a resonant wavelength of the antenna radiator, and θ is an included angle between the first grounding portion and the second grounding portion when the reference floor is in the hovering state.

In a second aspect, the present application also provides an antenna system, including:

A radio frequency signal source;

The reference floor comprises a first grounding edge, a second grounding edge, a third grounding edge and a fourth grounding edge which are sequentially connected end to end, wherein the first grounding edge and the third grounding edge are oppositely arranged, and the second grounding edge and the fourth grounding edge are oppositely arranged; and

The antenna radiator is arranged on one side of the first grounding edge, which is away from the third grounding edge, the feed point of the antenna radiator is electrically connected with the radio frequency signal source, the grounding point of the antenna radiator is electrically connected with the first grounding edge, the distance between the projection of the feed point of the antenna radiator on the first grounding edge and one end of the first grounding edge, which is far away from the second grounding edge, is D3, wherein I D3-lambda/4I is less than or equal to 5mm, and lambda is the resonance wavelength of the antenna radiator.

In a third aspect, the present application further provides an electronic device, including a frame and the antenna system, where the frame is disposed around a reference floor of the antenna system.

The application provides an antenna system which comprises a radio frequency signal source, a reference floor and an antenna radiator, wherein the reference floor comprises a first grounding part and a second grounding part which are connected, the antenna radiator is arranged on one side of the first grounding part, a feed point of the antenna radiator is electrically connected with the radio frequency signal source, the grounding point of the antenna radiator is electrically connected with the first grounding part, the distance between the feed point of the antenna radiator and a bending axis between the first grounding part and the second grounding part is D1, the distance between one end of the second grounding part far away from the first grounding part and the bending axis is D2,That is, when the reference floor of the antenna system is in a hovering state, a length of a line between a feeding point of the antenna radiator and an end of the second ground portion remote from the first ground portion is close to λ/4. In other words, when the antenna system is in a hovering state, the equivalent length of the antenna system is close to lambda/4, so that lambda/4 resonant current can be excited on the reference floor, and the performance of the antenna system when the reference floor is in a hovering state can be improved.

The application provides another antenna system which comprises a radio frequency signal source, a reference floor and an antenna radiator, wherein the reference floor comprises a first grounding edge, a second grounding edge, a third grounding edge and a fourth grounding edge which are connected end to end in sequence, the antenna radiator is arranged on one side of the first grounding edge, which is far away from the third grounding edge, a feed point of the antenna radiator is electrically connected with the radio frequency signal source, the grounding point of the antenna radiator is electrically connected with the first grounding edge, the distance between the projection of the feed point of the antenna radiator on the first grounding edge and one end of the first grounding edge, which is far away from the second grounding edge, is D3, D3-lambda/4I is less than or equal to 5mm, namely, the distance between the projection of the feed point of the antenna radiator on the reference floor and the tail end of the reference floor is close to lambda/4, so that lambda/4 resonant current can be excited on the reference floor, and the performance of the antenna system can be improved.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described.

Fig. 1 is a schematic plan view of an electronic device in an unfolded state according to an embodiment of the present application;

fig. 2 is a schematic plan view of an electronic device in a folded state according to an embodiment of the present application;

fig. 3 is a schematic plan view of an electronic device in a hovering state according to an embodiment of the present application;

FIG. 4 is a schematic plan view of a frame of the electronic device shown in FIG. 1;

FIG. 5 is a schematic plan view of an antenna system in the electronic device shown in FIG. 1;

FIG. 6 is a schematic plan view of a frame surrounding a reference ground of the antenna system in the electronic device shown in FIG. 1;

Fig. 7 is a schematic plan view of a side of the antenna radiator of the electronic device shown in fig. 6, which is located on the first grounding portion of the reference floor and faces away from the second grounding portion of the reference floor, along the length direction of the reference floor;

Fig. 8 is a schematic plan view of the antenna radiator of the electronic device shown in fig. 6, which is disposed on one side of the first grounding portion of the reference floor along the thickness direction of the reference floor;

FIG. 9 is a schematic plan view of the antenna radiator of the electronic device shown in FIG. 6, in which the feeding point of the antenna radiator is electrically connected to a radio frequency signal source, and the grounding point of the antenna radiator is electrically connected to a first side of the first grounding portion;

fig. 10 is a schematic plan view of the antenna system of fig. 9 in a hovering state;

FIG. 11 is a graph of return loss for an antenna system with D1 of 47.5mm, D2 of 85.5mm, and θ of 90;

FIG. 12 is a graph of the radiation efficiency of the antenna system with D1 of 47.5mm, D2 of 85.5mm, and θ of 90;

Fig. 13 is a schematic plan view of the antenna system shown in fig. 9, in which the antenna radiator is located on a side of the first side facing away from the third side, and a ground point of the antenna radiator is electrically connected to the first side;

Fig. 14 is a schematic plan view of a side of the third side of the first grounding portion facing away from the first side of the antenna radiator in the antenna system shown in fig. 9;

Fig. 15 is a schematic plan view of the antenna system shown in fig. 9, in which the antenna radiator is located on a side of the second side of the first grounding portion facing away from the second grounding portion;

Fig. 16 is a schematic plan view of the antenna system shown in fig. 9, in which the grounding point of the antenna radiator is located at a side of the feeding point of the antenna radiator facing the bending axis, and the free end of the antenna radiator is located at a side of the feeding point of the antenna radiator facing away from the bending axis;

Fig. 17 is a schematic plan view of the electronic device shown in fig. 6, in which the frame includes a first conductive portion and a second conductive portion that are disposed at intervals and are located on the same side of the reference floor, and the antenna radiator is located on the first conductive portion, and the second conductive portion is electrically connected to the reference floor;

Fig. 18 is a schematic plan view of another electronic device according to an embodiment of the present application;

FIG. 19 is a schematic plan view of a frame of the electronic device shown in FIG. 18;

FIG. 20 is a schematic plan view of an antenna system of the electronic device shown in FIG. 18;

FIG. 21 is a schematic plan view of a frame of the electronic device shown in FIG. 18 disposed around a reference floor of the antenna system;

Fig. 22 is a schematic diagram of a current distribution of the antenna system of fig. 19;

FIG. 23 is a schematic plan view of the electronic device shown in FIG. 18, which is bendable about a bending axis to unfold or fold;

FIG. 24 is a graph of return loss of the antenna system for D4+D5 of 128.3mm, 100mm, 71.7mm, 43.4mm, respectively;

FIG. 25 is a graph of the radiation efficiency of the antenna system for D4+D5 of 128.3mm, 100mm, 71.7mm, 43.4mm, respectively;

fig. 26 is a schematic plan view of the electronic device shown in fig. 18, in which the frame includes a first conductive portion and a second conductive portion disposed at a same side of the reference floor and spaced apart from each other, and the antenna radiator is disposed on the first conductive portion, and the second conductive portion is electrically connected to the reference floor.

Detailed Description

The technical scheme provided by the application is clearly and completely described below with reference to the accompanying drawings. It should be apparent that the described embodiments of the application are only some embodiments, but not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive effort, based on the embodiments described herein, fall within the scope of protection of the present application. Reference in the specification to "an embodiment," "an 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 the phrase 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 skilled in the art will appreciate explicitly and implicitly that the described embodiments of the application may be combined with other embodiments. The terms first, second and the like in the description and in the claims of the application and in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order; the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion.

Electronic devices can be classified into foldable electronic devices and conventional electronic devices. The structural morphology of the foldable electronic equipment is changed in different application scenes, so that the foldable electronic equipment can be in one of unfolding, folding and hovering states. For example, in application scenarios such as office, file viewing, etc., the foldable electronic device may be in an unfolded state, so as to facilitate large-screen display, and facilitate user review; the foldable electronic equipment can be in a folded state in application scenes such as bags, desktops and the like, so that the volume is reduced, and the portable electronic equipment is convenient for users to carry; the foldable electronic equipment may be in a hovering state in application scenes such as self-timer, movie watching and video call, so that hovering placement is facilitated, and convenience is brought to users. However, the structural morphology of the foldable electronic device is changed in different application scenes, so that the length of the whole device is changed, and the antenna performance in different states is greatly different. In the related art, only the antenna performance of the foldable electronic device in the unfolded and folded state is considered, but the problem that the performance of the foldable electronic device in the hovering state is poor is ignored. Among them, the conventional electronic device is not foldable, and it has only one structural form. In other words, the structural morphology of the conventional electronic device is not changed in different application scenarios.

Referring to fig. 1 to 3, in order to solve the problem of poor performance of the foldable electronic device in a hovering state, the present application provides an electronic device 1000 and an antenna system 100. The electronic device 1000 is a foldable electronic device, and may be a foldable mobile phone, a foldable tablet, or the like. The embodiment of the application takes a foldable mobile phone as an example. The electronic device 1000 has an expanded state, a collapsed state, and a hover state.

Fig. 1 is a schematic plan view of an electronic device 1000 in an unfolded state according to an embodiment of the present application, fig. 2 is a schematic plan view of the electronic device 1000 in a folded state according to an embodiment of the present application, and fig. 3 is a schematic plan view of the electronic device 1000 in a hovering state according to an embodiment of the present application. The angle between the sides of the bending axis in the electronic device 1000 in the unfolded state is equal to or close to 180 °. The angle between the sides of the bending axis in the electronic device 1000 in the folded state is equal to or close to 0 °. The angle between the sides of the bending axis in the hovering state of the electronic device 1000 may be any one angle between 0 deg. and 180 deg. (excluding 0 deg. and 180 deg.). The electronic device 1000 includes a bezel 200 and an antenna system 100. Wherein, the electronic device 1000 is in the unfolded state corresponding to the antenna system 100 being in the unfolded state and the frame 200 being in the unfolded state; the electronic device 1000 being in the folded state corresponds to the antenna system 100 being in the folded state, the bezel 200 being in the folded state; the electronic device 1000 being in a hover state corresponds to the antenna system 100 being in a hover state and the bezel 200 being in a hover state.

As shown in fig. 4, fig. 4 is a schematic plan view of the bezel 200 in the electronic device 1000 shown in fig. 1. The bezel 200 may be a conductive bezel, a non-conductive bezel, or a partially conductive bezel. In one possible embodiment, the frame 200 may be a conductive frame, and the material of the frame 200 may include one or more of metal, alloy, conductive polymer, and the like. In another possible embodiment, the frame 200 may be a non-conductive frame, and the material of the frame 200 may include one or more of plastic, glass, ceramic, and the like. In other possible embodiments, the bezel 200 may be a partially conductive bezel, i.e., a portion of the bezel 200 is conductive and another portion is non-conductive. Specifically, the material of one part of the frame 200 may include one or more of metal, alloy, conductive polymer, etc., and the material of the other part of the frame 200 may include one or more of plastic, glass, ceramic, etc. The shape of the rim 200 is not particularly limited in the present application. In one possible embodiment, the bezel 200 is generally rectangular. Specifically, the frame 200 includes a first sub-frame 20, a second sub-frame 21, a third sub-frame 22 and a fourth sub-frame 23 that are sequentially connected end to end, where the first sub-frame 20 and the third sub-frame 22 are oppositely disposed, and the second sub-frame 21 and the fourth sub-frame 23 are oppositely disposed. The first sub-frame 20 and the second sub-frame 21, the second sub-frame 21 and the third sub-frame 22, the third sub-frame 22 and the fourth sub-frame 23, and the fourth sub-frame 23 and the first sub-frame 20 may be connected at right angles or arc. In the embodiment of the present application, the right angle connection between the first sub-frame 20 and the second sub-frame 21, between the second sub-frame 21 and the third sub-frame 22, between the third sub-frame 22 and the fourth sub-frame 23, and between the fourth sub-frame 23 and the first sub-frame 20 is taken as an example.

As shown in fig. 5, fig. 5 is a schematic plan view of the antenna system 100 in the electronic device 1000 shown in fig. 1. The antenna system 100 comprises a radio frequency signal source 10, a reference floor 11 and an antenna radiator 12.

Wherein the antenna system 100 is in a deployed state corresponding to the rf signal source 10 being in a deployed state, the reference floor 11 being in a deployed state, and the antenna radiator 12 being in a deployed state; the antenna system 100 is in a folded state corresponding to the radio frequency signal source 10 being in a folded state, the reference floor 11 being in a folded state, and the antenna radiator 12 being in a folded state; the antenna system 100 being in a hover state corresponds to the radio frequency signal source 10 being in a hover state, the reference floor 11 being in a hover state, and the antenna radiator 12 being in a hover state.

The rf signal source 10 may be an rf chip, an rf module, or the like. The radio frequency signal source 10 is used for generating an alternating current signal.

The reference floor 11 is a common reference potential designed in the electronic device 1000, and may be a ground layer of a motherboard of the electronic device 1000, or may be a floor electrically connected to another motherboard ground layer, or the like. In the following embodiments, the reference floor 11 is exemplified by a ground layer of a motherboard of the electronic device 1000.

The reference floor 11 includes a first ground portion 110 and a second ground portion 112 connected. In the embodiment of the present application, the first grounding portion 110 is close to the top of the electronic device 1000, and the second grounding portion is close to the bottom of the electronic device 1000. Of course, in other embodiments, the first ground 110 may be near the bottom of the electronic device 1000 and the second ground may be near the top of the electronic device 1000. The first grounding portion 110 and the second grounding portion 112 may be directly connected or indirectly connected. The first grounding portion 110 and the second grounding portion 112 may be bent with respect to the bending axis so as to make the reference floor 11 in a hovering state. It will be appreciated that in embodiments of the present application, the reference floor 11 may be bendable. In other application scenarios, the first grounding portion 110 and the second grounding portion 112 may also be bent relative to the bending axis, so that the reference floor 11 is in a unfolded state; and the first grounding portion 110 and the second grounding portion 112 can also be bent relative to the bending axis, so that the reference floor 11 is in a folded state. Wherein the bending axis may refer to the line M in the drawings, which is described as bending axis M in the following embodiments. The first grounding portion 110 and the second grounding portion 112 are bent with respect to the bending axis M, and both sides of the electronic device 1000 are also bent with respect to the bending axis M. It will be appreciated that both sides of the electronic device 1000 are rotated relative to the bending axis M, respectively, to operate the electronic device 1000 in a folded, unfolded or hovered state.

In the following embodiments, a coordinate system as shown in fig. 5 is established for convenience of description. The X-axis direction is understood as the width direction of the reference floor 11. The Y-axis direction can be understood as the length direction of the reference floor 11. The Z-axis direction can be understood as the thickness direction of the reference floor 11. The bending axis M may be in the X-axis direction or in the Y-axis direction. In the embodiment of the present application, the bending axis M is taken as an example along the X-axis direction. It is understood that the first grounding portion 110 and the second grounding portion 112 are arranged along the Y-axis direction.

In one possible embodiment, the reference floor 11 may be a flexible reference floor. In the present embodiment, the first grounding portion 110 and the second grounding portion 112 may be directly connected. At this time, the bending axis M may be understood as a boundary line between the first ground portion 110 and the second ground portion 112. The first grounding portion 110 and the second grounding portion 112 can be oppositely bent relative to the bending axis M, so that the reference floor 11 is gradually folded; and the first grounding portion 110 and the second grounding portion 112 can be bent back to the opposite direction relative to the bending axis M, so that the reference floor 11 is gradually unfolded.

In another possible embodiment, the reference floor 11 may be a rigid reference floor 11. In this embodiment, the first grounding portion 110 and the second grounding portion 112 may be directly rotatably connected or rotatably connected by other rotational connectors. When the first grounding portion 110 and the second grounding portion 112 are directly rotationally connected, the first grounding portion 110 and the second grounding portion 112 may be directly electrically connected. When the first grounding portion 110 and the second grounding portion 112 are rotationally connected by other rotational connectors, the first grounding portion 110 and the second grounding portion 112 may be electrically connected by other rotational connectors. At this time, the bending axis M may be understood as a rotation center line between the first ground engaging portion 110 and the second ground engaging portion 112. The first grounding portion 110 and the second grounding portion 112 can be oppositely bent relative to the bending axis M, so that the reference floor 11 is gradually folded; and the first grounding portion 110 and the second grounding portion 112 can be bent back to the opposite direction relative to the bending axis M, so that the reference floor 11 is gradually unfolded.

It will be appreciated that the reference floor 11 is in a hovering state when the angle between the first ground engaging portion 110 and the second ground engaging portion 112 is at any one of angles between 0 deg. and 180 deg..

Optionally, referring to fig. 5 and fig. 6, the first grounding portion 110 includes a first side 1101, a second side 1102, and a third side 1103. The second ground 112 includes a fourth side 1121, a fifth side 1122, and a sixth side 1123. The first side 1101, the second side 1102, the third side 1103, the fourth side 1121, the fifth side 1122, and the sixth side 1123 are connected end to end in this order. In the embodiment of the present application, the first side 1101 and the third side 1103 are disposed opposite to each other along the X-axis direction. The second side 1102 and the fifth side 1122 are disposed opposite to each other in the Y-axis direction. The fourth side 1121 and the sixth side 1123 are disposed opposite to each other in the X-axis direction.

The bezel 200 of the electronic device 1000 is disposed around the reference floor 11 of the antenna system 100. It can be appreciated that the bezel 200 of the electronic device 1000 surrounds the outer peripheral side of the reference floor 11 of the antenna system 100. In one possible embodiment, the first sub-frame 20 surrounds a side of the first side 1101 of the first grounding portion 110 facing away from the third side 1103 of the first grounding portion 110 and surrounds a side of the sixth side 1123 of the second grounding portion 112 facing away from the fourth side 1121 of the second grounding portion 112; the second sub-frame 21 surrounds a side of the second side 1102 of the first grounding portion 110 facing away from the second grounding portion 112; the third sub-frame 22 surrounds one side of the third side 1103 of the first grounding portion 110 facing away from the first side 1101 of the first grounding portion 110 and surrounds one side of the fourth side 1121 of the second grounding portion 112 facing away from the sixth side 1123 of the second grounding portion 112; the fourth sub-frame 23 surrounds a side of the fifth side 1122 of the second grounding portion 112 facing away from the first grounding portion 110.

The antenna radiator 12 is a conductor capable of converting an alternating current signal into an electromagnetic wave signal and radiating toward space, and/or capable of receiving a space electromagnetic wave signal and converting into an alternating current signal for transmission to the radio frequency signal source 10. The material of the antenna radiator 12 may be a metal, an alloy, or the like. For example: the antenna radiator 12 may be made of one of copper, aluminum, silver, and copper-aluminum alloy. The antenna radiator 12 may be a sheet radiator, a columnar radiator, a strip radiator, a shaped radiator, or the like. The extension of the antenna radiator 12 can be designed according to its operating frequency band.

The antenna radiator 12 is provided on one side of the first ground portion 110. In one possible embodiment, as shown in fig. 6, the antenna radiator 12 may be provided at one side of the first ground part 110 in the width direction of the reference floor 11. In other words, the antenna radiator 12 may be disposed on a side of the first side 1101 of the first ground portion 110 facing away from the third side 1103 of the first ground portion 110, or the antenna radiator 12 may be disposed on a side of the third side 1103 of the first ground portion 110 facing away from the first side 1101 of the first ground portion 110. In another possible embodiment, as shown in fig. 7, the antenna radiator 12 may also be disposed on a side of the first ground portion 110 facing away from the second ground portion 112 along the length direction of the reference floor 11. In other words, the antenna radiator 12 may be disposed on a side of the second side 1102 of the first grounding portion 110 facing away from the second grounding portion 112. In other possible embodiments, as shown in fig. 8, the antenna radiator 12 may be provided at one side of the first ground portion 110 in the thickness direction of the reference floor 11. In other words, the antenna radiator 12 and the reference floor 11 may be laminated and disposed at a distance.

As shown in fig. 9, the feed point 120 of the antenna radiator 12 is electrically connected to the radio frequency signal source 10. The feed point 120 of the antenna radiator 12 may be directly or indirectly electrically connected to the rf signal source 10. In one possible embodiment, the feeding point 120 of the antenna radiator 12 and the rf signal source 10 may be electrically connected by an electrical connection such as a feeding dome, a feeding probe, a coaxial line, a matching circuit, or the like. The ground point 121 of the antenna radiator 12 is electrically connected to the first ground portion 110. The ground point 121 of the antenna radiator 12 and the first ground portion 110 may be directly or indirectly electrically connected. In one possible embodiment, the grounding point 121 of the antenna radiator 12 and the first grounding portion 110 may be electrically connected through an electrical connection member such as a grounding spring, a grounding post, a conductive trace, a matching circuit, or the like. It will be appreciated that the feed point 120 of the antenna radiator 12 is used for feeding and the ground point 121 of the antenna radiator 12 is used for return to ground.

The distance between the feed point 120 of the antenna radiator 12 and the bending axis M is D1. The distance between the end of the second grounding portion 112 away from the first grounding portion 110 and the bending axis M is D2. In the embodiment of the present application, the end of the second grounding portion 112 away from the first grounding portion 110 may be understood as the fifth side 1122 of the second grounding portion 112. Wherein,Lambda is the resonant wavelength of the antenna radiator 12.θ is an angle between the first grounding portion 110 and the second grounding portion 112 when the reference floor 11 is in the hovering state.

As shown in figure 10 of the drawings,To refer to the length of the line between the feeding point 120 of the antenna radiator 12 and the end of the second ground portion 112 distant from the first ground portion 110 when the floor 11 is in the hovering state corresponds to the equivalent length of the antenna system 100 in the hovering state. Lambda/4 is the quarter of the resonance wavelength. It will be appreciated that since the equivalent length of the antenna system 100 in the hover state is not more than 5mm from the quarter-wave resonant wavelength of the antenna radiator 12, the feed point 120 of the antenna radiator 12 may excite a quarter-wave resonant current on the reference floor 11, causing the reference floor 11 to operate in a quarter-wave resonant mode with higher transmission and reception efficiency to improve the performance of the antenna system 100 in the hover state.

The application provides an antenna system 100 comprising a radio frequency signal source 10, a reference floor 11 and an antenna radiator 12, wherein the reference floor 11 comprises a first grounding part 110 and a second grounding part 112 which are connected, the antenna radiator 12 is arranged at one side of the first grounding part 110, a feed point 120 of the antenna radiator 12 is electrically connected with the radio frequency signal source 10, a grounding point 121 of the antenna radiator 12 is electrically connected with the first grounding part 110, the distance between the feed point 120 of the antenna radiator 12 and a bending axis M between the first grounding part 110 and the second grounding part 112 is D1, the distance between one end of the second grounding part 112 far away from the first grounding part 110 and the bending axis M is D2,That is, when the reference floor 11 of the antenna system 100 is in a hovering state, a length of a line between the feeding point 120 of the antenna radiator 12 and an end of the second ground portion 112 distant from the first ground portion 110 is close to λ/4. In other words, when the antenna system 100 is in a hovering state, the equivalent length of the antenna system 100 is close to λ/4, so that a resonant current of λ/4 can be excited on the reference floor 11, and the performance of the antenna system 100 when the reference floor 11 is in a hovering state can be improved.

The resonant frequency of the antenna radiator 12 ranges from 700MHz to 960MHz. λ=c/f. c is the wave speed, which can be 300000km/s. f is the resonant frequency of the antenna radiator 12. When the resonance frequency of the antenna radiator 12 is 700MHz, λ/4 can be calculated to be about 107mm from λ=c/f. When the resonance frequency of the antenna radiator 12 is 770MHz, λ/4 can be calculated to be about 97mm from λ=c/f. When the resonant frequency of the antenna radiator 12 is 960MHz, λ/4 can be calculated to be about 78mm from λ=c/f. In one possible embodiment, the resonant frequency of the antenna radiator 12 is 700MHz, at which point,The range of (2) is 102 mm-112 mm. In another possible embodiment, the resonant frequency of the antenna radiator 12 is 770MHz, at which point,The range of (2) is 92mm to 102mm. In other possible embodiments, the resonant frequency of the antenna radiator 12 is 960MHz, at which point,The range of (2) is 72mm to 83mm.

Wherein, the value range of theta is 80-110 degrees. In one possible embodiment, the resonant frequency of the antenna radiator 12 is 770MHz, θ is 90 °, at which point,The range of (2) is 92mm to 102mm. It will be appreciated that by controlling one or more of the dimensions of D1, D2, and the angle θ between the first and second ground portions 110, 112 when the reference floor 11 is in a hover state, the equivalent length of the antenna system 100 in the hover state may be adjusted to approximately one-fourth of the resonant wavelength, thereby improving the performance of the antenna system 100 in the hover state.

Optionally, D1 is less than or equal to D2. In one possible embodiment, D1 may be equal to D2. In this embodiment, the feeding point 120 of the antenna radiator 12 may be located at an end of the first grounding portion 110 away from the second grounding portion 112. Thereby meeting the design requirementsThe dimension of the first grounding portion 110 along the Y-axis direction is the same as the dimension of the second grounding portion 112 along the Y-axis direction, which is beneficial to designing the electronic device 1000 with the same dimensions on both sides of the bending axis M and improving the appearance symmetry of the electronic device 1000. In another possible embodiment, D1 may be less than D2. In this embodiment, the feeding point 120 of the antenna radiator 12 may be located between an end of the first grounding portion 110 away from the second grounding portion 112 and the bending axis M. In other words, the dimension of the first ground portion 110 in the Y-axis direction may be greater than D1. Thereby meeting the design requirementsThe dimension of the first grounding portion 110 along the Y-axis direction is the same as the dimension of the second grounding portion 112 along the Y-axis direction, which is beneficial to designing the electronic device 1000 with the same dimensions on both sides and improving the appearance symmetry of the electronic device 1000. In the present embodiment, the position of the antenna radiator 12 and the position of the feeding point 120 of the antenna radiator 12 are designed more flexibly. Wherein, an end of the first grounding portion 110 away from the second grounding portion 112 may be understood as the second side 1102 of the first grounding portion 110.

In one possible embodiment, 40 mm.ltoreq.D1.ltoreq.70 mm. By making 40 mm.ltoreq.d1.ltoreq.70mm, it is advantageous to realize that D1.ltoreq.d2 and the range of the resonance frequency of the antenna radiator 12 is 700MHz to 960MHz, that is, it is advantageous to design the reference floor 11 in which the first grounding portion 110 and the second grounding portion 112 are symmetrical about the bending axis M while satisfying the resonance frequency of the antenna radiator 12, so that it is easy to realize that both sides of the electronic apparatus 1000 are symmetrical about the bending axis from the external appearance.

As shown in fig. 11, fig. 11 is a return loss graph of the antenna system 100 when D1 is 47.5mm, D2 is 85.5mm, and θ is 90 °. The curve a is a return loss S11 curve when the antenna system 100 is in the unfolded state; curve b is the return loss S11 curve when the antenna system 100 is in a hover state. It can be seen from fig. 11 that the resonant frequency band of the antenna system 100 is substantially unchanged in the deployed state as well as in the hovering state, approximately 770MHz. As shown in fig. 12, fig. 12 is a graph of radiation efficiency of the antenna system 100 when D1 is 47.5mm, D2 is 85.5mm, and θ is 90 °. Wherein curve c is the radiation efficiency curve of the antenna system 100 in the deployed state; curve d is the radiation efficiency curve of the antenna system 100 in a hover state. As can be seen from fig. 12, the radiation efficiency of the antenna system 100 in the hovering state is improved by approximately 1dB compared to the radiation efficiency of the antenna system 100 in the deployed state.

In a possible embodiment, referring to fig. 13 to 15, the orthographic projection of the antenna radiator 12 on the plane of the reference floor 11 is located outside the reference floor 11. In other words, the orthographic projection of the antenna radiator 12 on the surface of the reference floor 11 does not overlap with the reference floor 11. Alternatively, as shown in fig. 13, the antenna radiator 12 is located on a side of the first side 1101 of the first ground portion 110 facing away from the third side 1103, or as shown in fig. 14, the antenna radiator 12 is located on a side of the third side 1103 of the first ground portion 110 facing away from the first side 1101; as shown in fig. 15, the antenna radiator 12 is located on a side of the second side 1102 of the first grounding portion 110 facing away from the second grounding portion 112. The thickness of the antenna system 100 can be reduced in this embodiment, which is convenient for the light and thin electronic device 1000. In addition, the antenna radiator 12 is located on the side of the first side 1101 of the first grounding portion 110 facing away from the third side 1103, which may facilitate design of the antenna system 100 for communication through the side of the first sub-frame 20 of the electronic device 1000; the antenna radiator 12 is located on a side of the third side 1103 of the first grounding portion 110 away from the first side 1101, so as to facilitate design of the antenna system 100 for communication through a side of the third sub-frame 22 of the electronic device 1000; the antenna radiator 12 is located on a side of the second side 1102 of the first grounding portion 110 facing away from the second grounding portion 112, which may facilitate design of the antenna system 100 for communication through a side of the second sub-frame 21 of the electronic device 1000. The communication through the side of the first sub-frame 20, the second sub-frame 21 and the third sub-frame 22 has better communication effect and ensures communication performance because of less interference and barriers compared with the communication through the side of the display screen of the electronic device 1000 and the communication through the side of the back cover of the electronic device 1000 (i.e. the orthographic projection of the antenna radiator 12 on the surface of the reference floor 11 overlaps with part of the reference floor 11). In addition, it is possible to avoid the influence of the display effect of the display screen due to the change of the display screen of the electronic device 1000 for improving the wireless performance, and to enrich the material selection and the manufacturability of the rear cover of the electronic device 1000.

As shown in fig. 13, the antenna radiator 12 is located on a side of the first side 1101 facing away from the third side 1103, and the ground point 121 of the antenna radiator 12 is electrically connected to the first side 1101. The antenna radiator 12 is spaced from the first side 1101, and the ground point 121 of the antenna radiator 12 is indirectly electrically connected to the first side 1101. The ground point 121 of the antenna radiator 12 and the first side 1101 may be electrically connected by a metal plate, a metal post, or the like. This embodiment facilitates the design of the antenna system 100 for communication through the side of the first sub-frame 20. In addition, by positioning the antenna radiator 12 on the side of the first side 1101 facing away from the third side 1103, the length of the antenna system 100 can be reduced, facilitating miniaturization of the electronic device 1000; and the grounding point 121 of the antenna radiator 12 is electrically connected to the first side 1101, the length of an electrical connection between the grounding point 121 of the antenna radiator 12 and the reference floor 11 can be reduced, and the structure of the antenna system 100 can be simplified. Of course, in other embodiments, the antenna radiator 12 may be located on a side of the third side 1103 facing away from the first side 1101, and the ground point 121 of the antenna radiator 12 may be electrically connected to the third side 1103.

Wherein the ground point 121 of the antenna radiator 12 is located at a side of the feeding point 120 of the antenna radiator 12 facing away from the bending axis M. The free end 122 of the antenna radiator 12 is located on the side of the feed point 120 of the antenna radiator 12 facing the bending axis M. In other words, the ground point 121 of the antenna radiator 12, the feeding point 120 of the antenna radiator 12, the free end 122 of the antenna radiator 12, and the bending axis M are arranged in this order. In this embodiment, the ground point 121 of the antenna radiator 12, the feeding point 120 of the antenna radiator 12, the free end 122 of the antenna radiator 12, and the bending axis M are sequentially arranged along the Y-axis direction. In one possible embodiment, the ground point 121 of the antenna radiator 12 may be connected to an end of the first side 1101 remote from the second ground portion 112. The free end 122 of the antenna radiator 12 may be understood as the end of the antenna radiator 12, i.e. the end of the antenna radiator 12 not electrically connected to other components. The antenna system 100 of the embodiment has a higher degree of freedom in design, which is beneficial to integrate the antenna radiator 12 on the frame 200 of the electronic device 1000, and the grounding point 121 of the antenna radiator 12 is not easy to coincide with the bending break point of the frame 200.

Of course, in other embodiments, as shown in fig. 16, the ground point 121 of the antenna radiator 12 may be located on a side of the feeding point 120 of the antenna radiator 12 facing the bending axis M, and the free end 122 of the antenna radiator 12 may be located on a side of the feeding point 120 of the antenna radiator 12 facing away from the bending axis M.

The first grounding portion 110 and the second grounding portion 112 are symmetrical about the bending axis M. In other words, the dimension of the first grounding portion 110 along the Y-axis direction is equal to the dimension of the second grounding portion 112 along the Y-axis direction, that is, the dimension of the first side 1101 is equal to the dimension of the sixth side 1123, and the dimension of the third side 1103 is equal to the dimension of the fourth side 1121; and the dimension of the first grounding portion 110 along the X-axis direction is equal to the dimension of the second grounding portion 112 along the X-axis direction, that is, the dimension of the second side 1102 is equal to the dimension of the fifth side 1122. The reference floor 11 with the first grounding portion 110 and the second grounding portion 112 symmetrical about the bending axis M can be designed in this embodiment, so that the symmetry of the antenna system 100 can be improved, and the appearance symmetry of the electronic device 1000 can be improved.

In one possible embodiment, as shown in fig. 17, the frame 200 includes a first conductive portion 201 and a second conductive portion 202 disposed at a distance on the same side of the reference floor 11, the antenna radiator 12 is disposed on the first conductive portion 201, and the second conductive portion 202 is electrically connected to the reference floor 11. In this embodiment, taking the antenna radiator 12 located on the side of the first side 1101 facing away from the third side 1103 as an example, the first sub-frame 20 includes a first conductive portion 201 and a second conductive portion 202 that are disposed at intervals, other embodiments can be described with reference to this embodiment. Wherein the first conductive portion 201 and the second conductive portion 202 may be connected by a non-conductive structure. The antenna radiator 12 being located in the first conductive portion 201 means that at least part of the first conductive portion 201 forms the antenna radiator 12. In other words, at least part of the first conductive portion 201 serves as both the bezel 200 of the electronic device 1000 and the antenna radiator 12 of the electronic device 1000. In this embodiment, the antenna radiator 12 is integrated on the frame 200 of the electronic device 1000, so that the communication performance of the electronic device 1000 can be improved, and the structural components of the electronic device 1000 can be reduced, so that the structural design of the electronic device 1000 and the arrangement of the internal structural components are facilitated. The second conductive portion 202 may be directly electrically connected to the reference floor 11 or indirectly electrically connected thereto. For example, the second conductive portion 202 and the reference floor 11 may be electrically connected by an electrical connector such as a grounding spring, a grounding post, a conductive trace, a matching circuit, etc. Wherein the second conductive portion 202 may be electrically connected to the first grounding portion 110 and/or the second grounding portion 112. The present embodiment is advantageous in forming other antenna radiators 12 on the second conductive portion 202, thereby widening the communication frequency band of the electronic device 1000.

In addition, as shown in fig. 18, in order to solve the problem that the communication performance of the conventional electronic device is poor and the performance of the foldable electronic device is poor in the unfolded state, the present application further provides another electronic device 2000 and another antenna system 300. The electronic device 2000 may be a conventional electronic device or a foldable electronic device.

It can be appreciated that the electronic device 2000 provided in this embodiment is different from the electronic device 1000 in the foregoing embodiment in that the electronic device 2000 provided in this embodiment may be a conventional electronic device or a foldable electronic device. The electronic device 2000 includes a bezel 400 and an antenna system 300. Fig. 18 is a schematic plan view of an electronic device 2000 including a frame 400 and an antenna system 300. As shown in fig. 19, fig. 19 is a schematic plan view of a frame 400 in the electronic device 2000 shown in fig. 18. Fig. 19 may be understood as a schematic plan view of the foldable electronic device when the frame 400 is in an unfolded state, or may be understood as a schematic plan view of the frame 400 when a conventional electronic device is in a normal use state. The structure of the frame 400 is substantially the same as that of the frame 200 in the above embodiment, and is different from the frame 200 in the above embodiment in that the frame 400 of the present embodiment may be a non-bendable frame or a bendable frame.

As shown in fig. 20, fig. 20 is a schematic plan view of the antenna system 300 in the electronic device 2000 shown in fig. 18. The antenna system 300 includes a radio frequency signal source 30, a reference floor 31, and an antenna radiator 32.

The rf signal source 30 may be an rf chip, an rf module, or the like. The radio frequency signal source 30 is used to generate an alternating current signal.

The reference floor 31 is a common reference potential designed in the electronic device 2000, and may be a ground layer of a motherboard of the electronic device 2000, or may be a floor electrically connected to another ground layer of the motherboard. In the following embodiments, the reference floor 31 is exemplified by a ground layer of a motherboard of the electronic device 2000.

In the following embodiments, a coordinate system as shown in fig. 20 is established for convenience of description. The X-axis direction is understood as the width direction of the reference floor 31. The Y-axis direction may be understood as the length direction of the reference floor 31. The Z-axis direction can be understood as the thickness direction of the reference floor 31.

The reference floor 31 comprises a first ground edge 311, a second ground edge 312, a third ground edge 313 and a fourth ground edge 314, which are connected end to end in sequence. The first grounding edge 311 is disposed opposite to the third grounding edge 313, and the second grounding edge 312 is disposed opposite to the fourth grounding edge 314. In this embodiment, the first grounding edge 311 and the third grounding edge 313 are disposed opposite to each other along the X-axis direction, and the second grounding edge 312 and the fourth grounding edge 314 are disposed opposite to each other along the Y-axis direction, which will not be described in detail later. In other words, the first grounding edge 311 and the third grounding edge 313 extend along the Y-axis direction, and the second grounding edge 312 and the fourth grounding edge 314 extend along the X-axis direction. Of course, in other embodiments, the first grounding edge 311 and the third grounding edge 313 may be disposed opposite to each other along the Y-axis direction, and the second grounding edge 312 and the fourth grounding edge 314 may be disposed opposite to each other along the X-axis direction. In other words, the first ground side 311 and the third ground side 313 may extend in the X-axis direction, and the second ground side 312 and the fourth ground side 314 may extend in the Y-axis direction.

As shown in fig. 21, a bezel 400 of the electronic device 2000 is disposed around the reference floor 31 of the antenna system 300. It is understood that the bezel 400 of the electronic device 2000 surrounds the outer peripheral side of the reference floor 31 of the antenna system 300. In one possible embodiment, the frame 400 includes a first sub-frame 40, a second sub-frame 41, a third sub-frame 42, and a fourth sub-frame 43 that are sequentially connected end to end, where the first sub-frame 40 is disposed opposite the third sub-frame 42, and the second sub-frame 41 is disposed opposite the fourth sub-frame 43. The first sub-frame 40 and the second sub-frame 41, the second sub-frame 41 and the third sub-frame 42, the third sub-frame 42 and the fourth sub-frame 43, and the fourth sub-frame 43 and the first sub-frame 40 may be connected at right angles or arc. The first sub-frame 40 surrounds one side of the first grounding edge 311 of the reference floor 31 facing away from the third grounding edge 313; the second sub-frame 41 surrounds the second grounding edge 312 of the reference floor 31 at a side facing away from the fourth grounding edge 314 of the reference floor 31; the third sub-frame 42 surrounds the third grounding edge 313 of the reference floor 31 and faces away from the first grounding edge 311 of the reference floor 31; the fourth sub-frame 43 surrounds the fourth grounding edge 314 of the reference floor 31 on a side facing away from the second grounding edge 312 of the reference floor 31.

The antenna radiator 32 is a conductor capable of converting an alternating current signal into an electromagnetic wave signal and radiating toward space, and/or capable of receiving a space electromagnetic wave signal and converting into an alternating current signal for transmission to the radio frequency signal source 30. The material of the antenna radiator 32 may be a metal, an alloy, or the like. For example: the antenna radiator 32 may be made of one of copper, aluminum, silver, and copper-aluminum alloy. The antenna radiator 32 may be a sheet-shaped radiator, a columnar radiator, a strip-shaped radiator, a shaped radiator, or the like. The extension of the antenna radiator 32 can be designed according to its operating frequency band.

As shown in fig. 21, the antenna radiator 32 is disposed on a side of the first ground edge 311 facing away from the third ground edge 313. The antenna radiator 32 is spaced apart from the first ground edge 311. The feed point 320 of the antenna radiator 32 is electrically connected to the radio frequency signal source 30. The feed point 320 of the antenna radiator 32 may be directly or indirectly electrically connected to the rf signal source 30. In one possible embodiment, the feeding point 320 of the antenna radiator 32 and the rf signal source 30 may be electrically connected by an electrical connection such as a feeding spring, a feeding probe, a matching circuit, or the like. The ground point 321 of the antenna radiator 32 is electrically connected to the first ground edge 311. The ground point 321 of the antenna radiator 32 may be directly or indirectly electrically connected to the first ground edge 311. In one possible embodiment, the grounding point 321 of the antenna radiator 32 and the first grounding edge 311 may be electrically connected through an electrical connector such as a grounding spring, a grounding post, a matching circuit, and the like. It will be appreciated that the feed point 320 of the antenna radiator 32 is used for feeding and the ground point 321 of the antenna radiator 32 is used for return to ground.

The distance between the projection of the feeding point 320 of the antenna radiator 32 at the first ground side 311 and the end of the first ground side 311 away from the second ground side 312 is D3. In the embodiment of the present application, one end of the first grounding edge 311 away from the second grounding edge 312, that is, one end of the first grounding edge 311 connected to the fourth grounding edge 314. D3 can also be understood as the distance between the projection of the feed point 320 of the antenna radiator 32 at the first ground edge 311 and the fourth ground edge 314. Where D3- λ/4 is less than or equal to 5mm, λ is the resonant wavelength of the antenna radiator 32. It will be appreciated that the distance between the end of the first ground edge 311 projected to the reference floor 31 of the feed point 320 of the antenna radiator 32 and the quarter-wave resonant wavelength of the antenna radiator 32 is not more than 5mm, so that the feed point 320 of the antenna radiator 32 can excite a quarter-wave resonant current on the reference floor 31, and the reference floor 31 can operate in a quarter-wave resonant mode with higher transmitting and receiving efficiency, so as to improve the performance of the antenna system 300.

As shown in fig. 22, fig. 22 is a schematic diagram of a current distribution of an antenna system 300 according to an embodiment of the present application. As can be seen from fig. 22, the reference floor 31 of the antenna system 300 has a resonant current thereon, and the resonant current on the reference floor 31 flows to an end of the first ground side 311 away from the second ground side 312 by being projected on the reference floor 31 by the feeding point 320 of the antenna radiator 32 in the Y-axis direction. In other words, by making |D3-. Lambda./4|.ltoreq.5 mm, a quarter-wavelength resonant current can be excited at the reference floor 31.

The other antenna system 300 provided by the application comprises a radio frequency signal source 30, a reference floor 31 and an antenna radiator 32, wherein the reference floor 31 comprises a first grounding edge 311, a second grounding edge 312, a third grounding edge 313 and a fourth grounding edge 314 which are sequentially connected end to end, the antenna radiator 32 is arranged on one side of the first grounding edge 311, which is away from the third grounding edge 313, a feed point 320 of the antenna radiator 32 is electrically connected with the radio frequency signal source 30, a grounding point 321 of the antenna radiator 32 is electrically connected with the first grounding edge 311, the distance between the projection of the feed point 320 of the antenna radiator 32 on the first grounding edge 311 and one end of the first grounding edge 311, which is away from the second grounding edge 312, is D3, which is equal to or less than 5mm, i.e. the distance between the projection of the feed point 320 of the antenna radiator 32 on the reference floor 31 and the tail end of the reference floor 31 is close to lambda/4, so that the resonant current of lambda/4 can be excited on the reference floor 31, and the performance of the antenna system 300 can be improved.

The resonant frequency of the antenna radiator 32 ranges from 700MHz to 960MHz. λ=c/f. c is the wave speed, which can be 300000km/s. f is the resonant frequency of the antenna radiator 32. When the resonance frequency of the antenna radiator 32 is 700MHz, λ/4 can be calculated to be about 107mm from λ=c/f. When the resonance frequency of the antenna radiator 32 is 770MHz, λ/4 can be calculated to be about 97mm from λ=c/f. When the resonant frequency of the antenna radiator 32 is 960MHz, λ/4 can be calculated to be about 78mm from λ=c/f. In one possible embodiment, the resonant frequency of the antenna radiator 32 is 700MHz, in which case D3 ranges from 102mm to 112mm. In another possible embodiment, the resonant frequency of the antenna radiator 32 is 770MHz, in which case D3 ranges from 92mm to 102mm. In other possible embodiments, the resonant frequency of the antenna radiator 32 is 960MHz, in which case D3 ranges from 72mm to 83mm.

The grounding point 321 of the antenna radiator 32 is electrically connected to one end of the first grounding edge 311 near the second grounding edge 312. The projection of the feed point 320 of the antenna radiator 32 at the first ground side 311 is located between the projection of the ground point 321 of the antenna radiator 32 at the first ground side 311 and an end of the first ground side 311 remote from the second ground side 312. The projection of the free end 322 of the antenna radiator 32 at the first ground side 311 is located between the projection of the feed point 320 of the antenna radiator 32 at the first ground side 311 and the end of the first ground side 311 remote from the second ground side 312. It will be appreciated that the ground point 321 of the antenna radiator 32, the feed point 320 of the antenna radiator 32, and the free end 322 of the antenna radiator 32 are arranged in this order along the Y-axis direction. The projection of the antenna radiator 32 at the first ground edge 311 does not protrude beyond the reference floor 31. The present embodiment can reduce the size of the antenna system 300 in the Y-axis direction, facilitating miniaturization of the electronic device 2000.

In one possible embodiment, as shown in fig. 23, the reference floor 31 may be folded about a folding axis M to unfold or fold. The feeding point 320 of the antenna radiator 32 is located at one side of the bending axis M, and a distance between the feeding point 320 of the antenna radiator 32 and the bending axis M is D4, an end of the first grounding edge 311 away from the second grounding edge 312 is located at the other side of the bending axis M, and a distance between an end of the first grounding edge 311 away from the second grounding edge 312 and the bending axis M is D5, where d3=d4+d5. It can be appreciated that |D4+D5- λ/4|is less than or equal to 5mm. The present embodiment may achieve better antenna performance of the foldable electronic device 2000 in the unfolded state.

As shown in fig. 24, fig. 24 is a graph showing return loss of the antenna system 300 when d4+d5 is 128.3mm, 100mm, 71.7mm, 43.4mm, respectively. Wherein curve e is the return loss S11 curve for antenna system 300 with d4+d5 of 128.3 mm; curve g is the return loss S11 curve for antenna system 300 with d4+d5 of 100 mm; curve h is the return loss S11 curve for antenna system 300 with d4+d5 of 71.7 mm; curve j is the return loss S11 curve for antenna system 300 with d4+d5 of 43.4. It can be seen from fig. 24 that the resonant frequency band of the antenna system 300 is substantially unchanged at 128.3mm, 100mm, 71.7mm, 43.4mm for d4+d5, respectively, and is approximately 770MHz. As shown in fig. 25, fig. 25 is a graph of radiation efficiency of the antenna system 300 for d4+d5 of 128.3mm, 100mm, 71.7mm, 43.4mm, respectively. Wherein curve k is the radiation efficiency curve for antenna system 300 with d4+d5 of 128.3 mm; curve m is the radiation efficiency curve for antenna system 300 with d4+d5 of 100 mm; curve n is the radiation efficiency curve for antenna system 300 with d4+d5 of 71.7 mm; curve p is the radiation efficiency curve for the antenna system 300 with d4+d5 of 43.4 mm. It can be seen from fig. 25 that the radiation efficiency is highest when d4+d5 of the antenna system 300 is 100mm, and that d4+d5 is 100mm and is also a solution in which d4+d5 is 128.3mm, 100mm, 71.7mm, and 43.4mm, respectively, closest to the resonance length 97.4mm of the antenna radiator 32. In other words, the radiation efficiency of the antenna system 300 is better when d4+d5 is close to λ/4.

In one possible embodiment, as shown in fig. 26, the frame 400 includes a first conductive portion 401 and a second conductive portion 402 that are disposed at a same side of the reference floor 31 and are spaced apart, the antenna radiator 32 is disposed on the first conductive portion 401, and the second conductive portion 402 is electrically connected to the reference floor 31. In this embodiment, taking the antenna radiator 32 located on the side of the first grounding edge 311 away from the third grounding edge 312 as an example, the first sub-frame 40 includes a first conductive portion 401 and a second conductive portion 402 that are disposed at intervals, other embodiments can be described with reference to this embodiment. Wherein the first conductive portion 401 and the second conductive portion 402 may be connected by a non-conductive structure. The antenna radiator 32 being located at the first conductive portion 401 means that at least part of the first conductive portion 401 forms the antenna radiator 32. In other words, at least part of the first conductive portion 401 serves as both the bezel 400 of the electronic device 2000 and the antenna radiator 32 of the electronic device 2000. The antenna radiator 32 is integrated on the frame 400 of the electronic device 2000, so that the communication performance of the electronic device 2000 can be improved, and the structural members of the electronic device 2000 can be reduced, thereby facilitating the structural design of the electronic device 2000 and the arrangement of the internal structural members. The second conductive portion 402 may be directly electrically connected to the reference floor 31 or indirectly electrically connected thereto. For example, the second conductive portion 402 and the reference floor 31 may be electrically connected by an electrical connector such as a grounding spring, a grounding post, a matching circuit, etc. The present embodiment is advantageous for forming other antenna radiators 32 on the second conductive portion 402, thereby widening the communication frequency band of the electronic device 2000.

The features mentioned in the description, the claims and the drawings may be combined with one another at will as far as they are relevant within the scope of the application. The advantages and features described for antenna system 100 apply in a corresponding manner to electronic device 1000 and the advantages and features described for antenna system 300 apply in a corresponding manner to electronic device 2000.

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 system, comprising:

A radio frequency signal source;

2. The antenna system of claim 1, wherein the resonant frequency of the antenna radiator ranges from 700MHz to 960MHz.

3. The antenna system of claim 1, wherein θ has a value in the range of 80 ° to 110 °.

4. The antenna system of claim 1, wherein D1 is equal to or less than D2.

5. The antenna system of claim 1, wherein 40mm +.d1 +.70 mm.

6. The antenna system according to any one of claims 1 to 5, characterized in that the orthographic projection of the antenna radiator on the plane of the reference floor is located outside the reference floor.

7. The antenna system of claim 6, wherein the first ground portion comprises a first side, a second side, and a third side, the second ground portion comprises a fourth side, a fifth side, and a sixth side, the first side, the second side, the third side, the fourth side, the fifth side, and the sixth side are connected end to end in sequence, the antenna radiator is located on a side of the first side facing away from the third side, and a ground point of the antenna radiator is electrically connected to the first side.

8. The antenna system of claim 6, wherein the ground point of the antenna radiator is located on a side of the feed point of the antenna radiator facing away from the bend axis, and wherein the free end of the antenna radiator is located on a side of the feed point of the antenna radiator facing toward the bend axis.

9. The antenna system of claim 6, wherein the first ground and the second ground are symmetrical about the bend axis.

10. An antenna system, comprising:

A radio frequency signal source;

11. The antenna system of claim 10, wherein the resonant frequency of the antenna radiator ranges from 700MHz to 960MHz.

12. The antenna system of claim 10, wherein the ground point of the antenna radiator is electrically connected to an end of the first ground edge that is proximate to the second ground edge, wherein a projection of the feed point of the antenna radiator at the first ground edge is located between a projection of the ground point of the antenna radiator at the first ground edge and an end of the first ground edge that is distal to the second ground edge, and wherein a projection of the free end of the antenna radiator at the first ground edge is located between a projection of the feed point of the antenna radiator at the first ground edge and an end of the first ground edge that is distal to the second ground edge.

13. The antenna system of claim 10, wherein the reference floor is bendable about a bending axis to unfold or fold, the feed point of the antenna radiator is located on one side of the bending axis and the distance between the feed point of the antenna radiator and the bending axis is D4, the end of the first ground edge remote from the second ground edge is located on the other side of the bending axis, and the distance between the end of the first ground edge remote from the second ground edge and the bending axis is D5, wherein d4+d5 = D3.

14. An electronic device comprising a frame and the antenna system of any one of claims 1 to 13, the frame being arranged around a reference floor of the antenna system.

15. The electronic device of claim 14, wherein the bezel includes a first conductive portion and a second conductive portion on the same side of the reference floor and spaced apart from each other, the antenna radiator is located on the first conductive portion, and the second conductive portion is electrically connected to the reference floor.