WO2024066677A1

WO2024066677A1 - Antenna assembly and electronic device

Info

Publication number: WO2024066677A1
Application number: PCT/CN2023/107707
Authority: WO
Inventors: 雍征东
Original assignee: Oppo广东移动通信有限公司
Priority date: 2022-09-30
Filing date: 2023-07-17
Publication date: 2024-04-04
Also published as: CN117810674A

Abstract

The present application provides an antenna assembly and an electronic device. The antenna assembly comprises a grounding layer and a first radiation group. The first radiation group and the grounding layer are stacked and spaced apart from each other. The first radiation group comprises a first antenna radiator and a first radiation branch. The first antenna radiator comprises a first grounding edge, a first feed point, a first free edge, a first side edge, and a second side edge. The first grounding edge comprises at least one first grounding point, and the at least one first grounding point is electrically connected to the grounding layer. The first feed point is electrically connected to a radio-frequency signal source. The first radiation branch comprises a first radiation part. The first radiation part is located on the side of the first free edge away from the first grounding edge, and a first coupling gap is formed between the first radiation part and the first free edge. The first radiation part comprises at least one second grounding point, and the at least one second grounding point is electrically connected to the grounding layer. The electronic device comprises a device body and the antenna assembly. The antenna assembly and the electronic device provided by the present application are relatively low in cross polarization and relatively high in angle measuring precision.

Description

Antenna components and electronic devices

This application claims priority to a Chinese patent application filed with the China Patent Office on September 30, 2022, with application number 202211230539.7 and application name “Antenna Assembly and Electronic Device,” the entire contents of which are incorporated herein by reference.

Technical Field

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

Background technique

In a technical solution for achieving angle measurement by determining a phase difference through an angle measurement antenna group formed by multiple antennas arranged at intervals in a specific direction, the convergence of a phase difference curve of the angle measurement antenna group is poor due to the cross-polarization effect of the antennas.

Summary of the invention

The present application provides an antenna assembly and an electronic device capable of reducing cross-polarization.

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

ground plane; and

A first radiation group is stacked and spaced with the ground layer, the first radiation group includes a first antenna radiator and a first radiation branch, the first antenna radiator includes a first ground edge, a first feeding point, a first free edge, a first side edge and a second side edge, the first ground edge, the first feeding point and the first free edge are arranged in sequence, the first side edge is connected between one end of the first ground edge and one end of the first free edge, the second side edge is connected between the other end of the first ground edge and the other end of the first free edge, the first ground edge includes at least one first grounding point, the at least one first grounding point is electrically connected to the ground layer, the first feeding point is used to electrically connect to a radio frequency signal source, the first radiation branch includes a first radiation portion, the first radiation portion is located on a side of the first free edge away from the first ground edge, and a first coupling gap is formed between the first radiation portion and the first free edge, the first radiation portion includes at least one second grounding point, the at least one second grounding point is electrically connected to the ground layer.

On the other hand, the present application also provides an electronic device, including a device body and the antenna assembly, wherein the device body is used to carry the antenna assembly.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments are briefly introduced below.

FIG1 is a schematic diagram of the structure of dual receiving antenna angle measurement in the related art;

FIG2 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

FIG3 is an exploded schematic diagram of the electronic device shown in FIG2 ;

FIG4 is a schematic diagram of a planar structure of the electronic device shown in FIG2 including an antenna assembly;

FIG5 is a schematic diagram of a planar structure of an antenna assembly provided in an embodiment of the present application;

6 is a schematic diagram of a planar structure in which the antenna assembly shown in FIG. 5 includes a first antenna radiator and a first radiating branch, and the first radiating branch includes a first radiating portion;

FIG7 is a schematic diagram of a planar structure of the first radiation branch of the antenna assembly shown in FIG6 further including a second radiation portion;

FIG8 is a schematic diagram of a planar structure of the first radiation branch of the antenna assembly shown in FIG7 further including a third radiation portion;

9 is a schematic diagram of a planar structure in which the second radiating portion and the third radiating portion of the first radiating branch of the antenna assembly shown in FIG. 8 are symmetrical about a line connecting the center point of the first ground edge and the center point of the first free edge;

FIG10 is a schematic diagram of a planar structure of the first radiation branch of the antenna assembly shown in FIG9 including a first sub-grounding point and a second sub-grounding point;

FIG11 is a schematic diagram of another planar structure of the first radiation branch of the antenna assembly shown in FIG9 including a first sub-grounding point and a second sub-grounding point;

FIG12 is a schematic diagram of a planar structure of the first radiation branch of the antenna assembly shown in FIG10 further including a third sub-grounding point;

FIG13 is a schematic diagram of a planar structure of the first radiation branch of the antenna assembly shown in FIG9 further including a fourth radiation portion;

FIG14 is a schematic diagram of a planar structure of the antenna assembly shown in FIG9 further including a first feeding element;

FIG15 is a schematic plan view of the structure of the antenna assembly shown in FIG9 further including a second feeding element;

FIG16 is a return loss curve of the antenna assembly provided in an embodiment of the present application;

FIG. 17 is a radiation efficiency curve of the antenna assembly provided in an embodiment of the present application;

FIG18 is a radiation pattern of a conventional PIFA antenna;

FIG19 is a radiation pattern of an antenna assembly provided in an embodiment of the present application;

FIG20 is a schematic diagram showing a comparison of polarization ratio directions of the antenna assembly of this embodiment and a conventional PIFA antenna;

FIG21 is a main polarization pattern of the E plane (left figure), a main polarization pattern and a cross-polarization pattern of the H plane of the antenna assembly provided in this embodiment;

FIG22 is a current distribution diagram of the antenna assembly provided in this embodiment;

FIG23 is a schematic diagram of a planar structure in which the antenna assembly shown in FIG9 further includes a second radiation group, and the second radiation group includes a second antenna radiator;

FIG24 is a schematic diagram of a planar structure in which the antenna assembly shown in FIG9 further includes a second radiation group, and the second radiation group includes a second antenna radiator and a second radiation branch;

FIG25 is a schematic diagram of a planar structure of the second radiation branch of the antenna assembly shown in FIG24 including a sixth radiation portion;

FIG26 is a schematic diagram of a planar structure of the second radiation branch of the antenna assembly shown in FIG25 including a seventh radiation portion;

FIG27 is a schematic diagram of a planar structure of the second radiation branch of the antenna assembly shown in FIG25 including a sixth radiation portion and a seventh radiation portion;

FIG28 is a schematic diagram of a planar structure in which the first radiation group and the second radiation group of the antenna assembly shown in FIG27 are arranged in a mirror image;

FIG29 is a schematic diagram of another planar structure in which the first radiation group and the second radiation group of the antenna assembly shown in FIG27 are arranged in a mirror image;

FIG30 is a schematic diagram of a planar structure in which the first radiation group and the second radiation group of the antenna assembly shown in FIG27 are arranged in sequence;

FIG31 is another schematic diagram of a planar structure in which the first radiation group and the second radiation group of the antenna assembly shown in FIG27 are arranged in sequence;

32 is a schematic diagram of a planar structure in which the antenna assembly shown in FIG. 28 further includes a third radiation group, the third radiation group includes a third antenna radiator, and the third antenna radiator and the first radiation group are arranged along the second target direction;

33 is a schematic diagram of a planar structure in which the antenna assembly shown in FIG. 28 further includes a third radiation group, the third radiation group includes a third antenna radiator, and the third antenna radiator and the second radiation group are arranged along the second target direction;

34 is a schematic diagram of a planar structure in which the antenna assembly shown in FIG. 28 further includes a third radiation group, the third radiation group includes a third antenna radiator, and the third antenna radiator and the first radiation group are arranged along the first target direction;

FIG35 is a schematic diagram of a planar structure in which the antenna assembly shown in FIG28 further includes a third radiation group, and the third radiation group includes a third antenna radiator and a third radiation branch;

FIG36 is a schematic diagram of the planar structure of the third radiation branch of the antenna assembly shown in FIG35 including the ninth radiation portion;

FIG37 is a schematic diagram of a planar structure of the second radiation branch of the antenna assembly shown in FIG35 including a seventh radiation portion;

FIG38 is a schematic diagram of the planar structure of the second radiation branch of the antenna assembly shown in FIG35 , including the sixth radiation portion and the seventh radiation portion.

Detailed ways

As shown in Figure 1, Figure 1 is a schematic diagram of the structure of dual receiving antenna angle measurement in the related art. The specific principle of dual receiving antennas to achieve angle measurement is: electromagnetic wave signals in different directions reach the two receiving antennas through different paths, introducing an additional path difference, thereby introducing an additional time difference, and the additional time difference corresponds to an additional phase difference. The angle measurement is achieved through the relationship between the phase difference and the arrival angle of the electromagnetic wave signals received by the two receiving antennas. In Figure 1, the spacing between the two receiving antennas is d. The electric field expressions of the transmitting antenna and the receiving antenna are as follows:

The Phase-Difference-of-Arrival (PDOA) of the antenna is the phase difference of the dot product of the electric field of the transmitting antenna and the receiving antenna, and is expressed as follows:

r ₁ -r ₂ = d sinθ

Wherein, _Rn is used to represent the product of the cross-polarization ratio of the transmitting antenna and the receiving antenna; ε is used to represent the dielectric constant; _α2 - _α1 is used to represent the feeding phase difference of the two receiving antennas; Used to indicate the consistency of the phase patterns of two receiving antennas; Used to represent the transmitting antenna phase pattern.

From the above expression, we can intuitively see that the factors that affect PDOA are: the polarization ratio of the transmitting and receiving antennas, the phase center spacing of the receiving antenna, the phase pattern of the receiving antenna, the phase pattern of the transmitting antenna, the medium environment in which the antenna is located, and the receiving antenna feed phase difference. In particular, in addition to the spatial phase difference, polarization inconsistency will also introduce additional phase differences.

Through theoretical derivation and analysis, when _Rn →∞ or _Rn →0, that is, the polarization of the transmitting and receiving antennas is matched and has a high polarization ratio, PDOA is mainly affected by the consistency of the phase pattern of the receiving antenna (stable phase center). The more consistent the receiving antenna is, the better the convergence of the PDOA curve. When the polarization is mismatched, that is, _R1 →∞, _R2 →0 or _R2 →∞, _R1 →0, ∞·0 will appear, and the PDOA is uncertain at this time. Generally, when the transmitting and receiving polarizations are matched, if the polarization purity is general, PDOA is not only affected by the main polarization of the receiving antenna, but also by the cross-polarization of the receiving antenna and the transmitting antenna. To this end, the present application provides an antenna component and electronic device with low cross-polarization and high angle measurement accuracy.

The antenna assembly provided by the present application includes a ground layer and a first radiation group. The first radiation group is stacked with the ground layer and spaced apart, the first radiation group includes a first antenna radiator and a first radiation branch, the first antenna radiator includes a first ground edge, a first feeding point, a first A free edge, a first side edge and a second side edge, the first grounding edge, the first feeding point and the first free edge are arranged in sequence, the first side edge is connected between one end of the first grounding edge and one end of the first free edge, the second side edge is connected between the other end of the first grounding edge and the other end of the first free edge, the first grounding edge includes at least one first grounding point, the at least one first grounding point is electrically connected to the grounding layer, the first feeding point is used to electrically connect to a radio frequency signal source, the first radiation branch includes a first radiation portion, the first radiation portion is located on the side of the first free edge away from the first grounding edge, and a first coupling gap is formed between the first radiation portion and the first free edge, the first radiation portion includes at least one second grounding point, and the at least one second grounding point is electrically connected to the grounding layer.

Among them, the first radiating branch also includes a second radiating portion, one end of the second radiating portion is connected to the first radiating portion, and the other end extends toward the side where the first antenna radiator is located, the second radiating portion is arranged opposite to the first side, and a second coupling gap is formed between the second radiating portion and the first side.

Among them, the second side is arranged opposite to the first side, the first radiation branch also includes a third radiation part, one end of the third radiation part is connected to the first radiation part, and the other end extends toward the side where the first antenna radiator is located, the third radiation part is arranged opposite to the second side, and a third coupling gap is formed between the second radiation part and the second side.

The second radiating portion and the third radiating portion are symmetrical about a line between a center point of the first ground edge and a center point of the first free edge.

Among them, the size of the first coupling gap is greater than or equal to 0.2 mm and less than or equal to 1.5 mm; the size of the second coupling gap is greater than or equal to 0.2 mm and less than or equal to 1.5 mm; the size of the third coupling gap is greater than or equal to 0.2 mm and less than or equal to 1.5 mm.

The size of the second coupling gap is the same as the size of the third coupling gap.

Among them, the first radiation branch also includes a fourth radiation part, the fourth radiation part is connected between an end of the second radiation part away from the first radiation part and an end of the third radiation part away from the first radiation part, the fourth radiation part is located on the side of the first grounding edge away from the first free edge, and a fourth coupling gap is formed between the fourth radiation part and the first grounding edge.

The at least one second grounding point includes a first sub-grounding point and a second sub-grounding point, and the first sub-grounding point and the second sub-grounding point are respectively located at two ends of the first radiating portion.

The at least one second grounding point further includes at least one third sub-grounding point, and the at least one third sub-grounding point is located between the first sub-grounding point and the second sub-grounding point.

The antenna assembly further includes a first feeding element, one end of which is electrically connected to the first feeding point, and the other end of which passes through the ground layer and is used to be electrically connected to the radio frequency signal source.

The antenna assembly further includes a second feeding element, one end of which is electrically connected to the first feeding point, and the other end of which extends outside the first antenna radiator through the side where the first ground edge is located, and is used to electrically connect to the RF signal source.

Among them, the antenna assembly also includes a second radiation group, the second radiation group is stacked and spaced apart from the ground layer, and the second radiation group and the first radiation group are arranged spaced apart along a first target direction, the second radiation group includes a second antenna radiator, the second antenna radiator includes a second feeding point, and the second feeding point is used to electrically connect the RF signal source.

Among them, the second antenna radiator also includes a second grounding edge, a second free edge, a third side edge and a fourth side edge, the second grounding edge, the second feeding point and the second free edge are arranged in sequence, the third side edge is connected between one end of the second grounding edge and one end of the second free edge, the fourth side edge is connected between the other end of the second grounding edge and the other end of the second free edge, the second grounding edge includes at least one third grounding point, and the at least one third grounding point is electrically connected to the grounding layer, the second radiation group also includes a second radiation branch, the second radiation branch includes a fifth radiation part, the fifth radiation part is located on the side of the second free edge away from the second grounding edge, and a fifth coupling gap is formed between the fifth radiation part and the second free edge, the fifth radiation part includes at least one fourth grounding point, and the at least one fourth grounding point is electrically connected to the grounding layer.

Among them, the third side is arranged opposite to the fourth side, the second radiation branch also includes a sixth radiation part and/or a seventh radiation part, one end of the sixth radiation part is connected to the fifth radiation part, and the other end extends toward the side where the second antenna radiator is located, the sixth radiation part is arranged opposite to the third side, and a sixth coupling gap is formed between the sixth radiation part and the third side, one end of the seventh radiation part is connected to the fifth radiation part, and the other end extends toward the side where the second antenna radiator is located, the seventh radiation part is arranged opposite to the fourth side, and a seventh coupling gap is formed between the seventh radiation part and the fourth side.

The first radiation group and the second radiation group are symmetrical about a perpendicular bisector of a line connecting the first radiation group and the second radiation group along the first target direction.

Among them, the first radiating portion, the first free edge, the first grounding edge, the fifth radiating portion, the second free edge and the second grounding edge are arranged in sequence along the first target direction; or, the first grounding edge, the first free edge, the first radiating portion, the second grounding edge, the second free edge and the fifth radiating portion are arranged in sequence along the first target direction.

Wherein, the antenna assembly also includes a third radiation group, the third radiation group is stacked and spaced apart with the ground layer, the third radiation group and the first radiation group are spaced apart along a second target direction, or the third radiation group and the second radiation group are spaced apart along the second target direction, the third radiation group includes a third antenna radiator, the third antenna radiator includes a third feeding point, the third feeding point is electrically connected to the RF signal source, wherein the second target direction intersects with the first target direction.

Among them, the third antenna radiator also includes a third grounding edge and a third free edge, the third grounding edge, the third feeding point and the third free edge are arranged in sequence, the third grounding edge includes at least one fifth grounding point, and the at least one fifth grounding point is electrically connected to the ground layer, the third radiation group also includes a third radiation branch, the third radiation branch includes an eighth radiation part, the eighth radiation part is located on the side of the third free edge away from the third grounding edge, and an eighth coupling gap is formed between the eighth radiation part and the third free edge, the eighth radiation part includes at least one sixth grounding point, and the at least one sixth grounding point is electrically connected to the ground layer.

The third antenna radiator further includes a fifth side connected between one end of the third ground edge and one end of the third free edge and a sixth side connected between the other end of the third ground edge and the other end of the third free edge, the fifth side is arranged opposite to the sixth side, the third radiation branch further includes a ninth radiation portion and/or a tenth radiation portion, one end of the ninth radiation portion is connected to the first radiation portion The eighth radiating portion has the other end extending toward the side where the third antenna radiator is located, the ninth radiating portion is arranged opposite to the fifth side, and a ninth coupling gap is formed between the ninth radiating portion and the fifth side, one end of the tenth radiating portion is connected to the eighth radiating portion, and the other end extends toward the side where the third antenna radiator is located, the tenth radiating portion is arranged opposite to the sixth side, and a tenth coupling gap is formed between the tenth radiating portion and the sixth side.

The electronic device provided in the present application includes the antenna assembly described in the device body, and the device body is used to carry the antenna assembly.

The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the embodiments described in the present application are only some embodiments, not all embodiments. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present application.

Reference to "embodiment" or "implementation method" in this application means that the specific features, structures or characteristics described in conjunction with the embodiment or implementation method may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it mutually exclusive, independent or alternative to other embodiments. It can be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

The terms "first", "second", etc. in the specification and claims of this application and the above drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions.

As shown in FIG2 , FIG2 is a schematic diagram of the structure of an electronic device 100 provided in an embodiment of the present application. The electronic device 100 may be a mobile phone, a tablet computer, a laptop computer, a computer, a watch, a drone, a robot, a base station, a radar, a customer premise equipment (Customer Premise Equipment, CPE), a vehicle-mounted device, a home appliance, or other device with a wireless communication function. The present application embodiment takes a mobile phone as an example.

Please refer to Figures 2 and 3. The electronic device 100 includes a device body 2 and an antenna assembly 1. Among them, the device body 2 may include a display screen 20, a housing 21 (a middle frame 210 and a back cover 211), a circuit board 22, a camera module 23 and other components. The display screen 20 and the housing 21 are connected to each other. The circuit board 22 and the camera module 23 are located in the space between the display screen 20 and the housing 21. The device body 2 is used to carry the antenna assembly 1. Specifically, the antenna assembly 1 can be directly carried on one or more components of the device body 2 (for example, a circuit board 22 or a housing 21), or it can be carried on one or more components of the device body 2 through other supporting structures. The antenna assembly 1 can be carried in the device body 2 (i.e., in the space between the display screen 20 and the housing 21), or it can be partially integrated in the housing 21 of the device body 2.

The antenna assembly 1 is used to implement the wireless communication function of the electronic device 100. In one embodiment of the present application, the antenna assembly 1 is a UWB antenna assembly, that is, an antenna assembly for short-range wireless communication. The transmission distance of the antenna assembly 1 can be within 10m. Since UWB does not use a carrier, but uses nanosecond to microsecond non-sinusoidal narrow pulses to transmit data, the spectrum range occupied by the UWB antenna assembly is very wide, which is suitable for high-speed, short-range wireless personal communications. The FCC stipulates that the operating frequency band of UWB ranges from 3.1GHz to 10.6GHz, and the minimum operating bandwidth is 500MHz. The current mainstream UWB frequency band center frequencies are 6.5GHz and 8GHz. It can be understood that the operating frequency band range of the antenna assembly 1 provided in the present application can be between 3.1GHz and 10.6GHz, the minimum operating bandwidth can be 500MHz, and the center frequency of the antenna assembly 1 can include 6.5GHz or 8GHz. In the following embodiments, the center frequency of the antenna assembly 1 includes 8GHz as an example.

For ease of description, a coordinate system is established as shown in FIG3 , wherein the X-axis direction can be understood as the width direction of the electronic device 100 , the Y-axis direction can be understood as the length direction of the electronic device 100 , and the Z-axis direction can be understood as the thickness direction of the electronic device 100 .

As shown in FIG4 , the antenna assembly 1 includes a ground layer 10 and a first radiation group 11. In the electronic device 100, the ground layer 10 can be the housing 21 of the electronic device 100, or the reference ground on the circuit board 22 of the electronic device 100, or the grounding member electrically connected to the housing 21 of the electronic device 100, or the grounding member electrically connected to the reference ground on the circuit board 22 of the electronic device 100, etc. In the following embodiments, the reference ground on the circuit board 22 of the electronic device 100 is used as the ground layer 10 of the antenna assembly 1 unless otherwise specified. The first radiation group 11 is stacked and spaced apart from the ground layer 10. In a possible embodiment, the antenna assembly 1 may further include a dielectric substrate 12. The ground layer 10 and the first radiation group 11 may be respectively disposed on two opposite surfaces of the dielectric substrate 12. The material of the dielectric substrate 12 may include glass fiber, ceramic, plastic, etc.

As shown in FIG5 , FIG5 is a schematic diagram of the structure of an antenna component 1 provided in an embodiment of the present application. The first radiation group 11 of the antenna component 1 includes a first antenna radiator 110 and a first radiation branch 112. Among them, the material of the first antenna radiator 110 and the material of the first radiation branch 112 are both conductive materials. For example: the material of the first antenna radiator 110 and the material of the first radiation branch 112 can be metal, alloy, etc. The material of the first antenna radiator 110 and the material of the first radiation branch 112 can be the same or different. The first antenna radiator 110 and the first radiation branch 112 can operate in a quarter-wavelength resonant mode.

The first antenna radiator 110 includes a first ground edge 1101, a first feeding point 1102, a first free edge 1103, a first side edge 1104, and a second side edge 1105. The first ground edge 1101, the first feeding point 1102, and the first free edge 1103 are arranged in sequence. The first side edge 1104 is connected between one end of the first ground edge 1101 and one end of the first free edge 1103. The second side edge 1105 is connected between the other end of the first ground edge 1101 and the other end of the first free edge 1103. In the embodiment of the present application, the first ground edge 1101, the first feeding point 1102, and the first free edge 1103 are arranged in sequence along the X-axis direction. Of course, in other embodiments, the first ground edge 1101, the first feeding point 1102, and the first free edge 1103 can be arranged in sequence along the Y-axis direction. The first antenna radiator 110 can be understood as a planar inverted F-type (PIFA) antenna radiator. The first grounding edge 1101 includes at least one first grounding point 110a, and at least one first grounding point 110a is electrically connected to the grounding layer 10. The present application does not specifically limit the number of the first grounding points 110a. In the following embodiments, a plurality of first grounding points 110a arranged at intervals are taken as an example. Of course, in other embodiments, the number of the first grounding point 110a can also be one. When the number of the first grounding points 110a is small, the structure of the first radiation group 11 is simple and convenient to process. The first grounding point 110a can be electrically connected to the grounding layer 10 through a microstrip line, a coaxial line, a probe, a spring, etc. The first feeding point 1102 is used to electrically connect the RF signal source 30. The first feeding point 1102 and the RF signal source 30 can be electrically connected through a microstrip line, a coaxial line, a probe, a spring, etc. The RF signal source 30 can be a RF chip, which is used to generate a feeding current to excite a corresponding resonance on the first antenna radiator 110 through the first feeding point 1102. The first free edge 1103 can be understood as an edge portion of the first antenna radiator 110 that is not directly electrically connected to other components.

The first radiation branch 112 includes a first radiation portion 1120. The material of the first radiation portion 1120 is a conductive material. For example, the material of the first radiation portion 1120 can be metal, alloy, etc. The first radiation portion 1120 is located on the side of the first free edge 1103 away from the first ground edge 1101, and a first coupling gap is formed between the first radiation portion 1120 and the first free edge 1103. It can be understood that the first radiation portion 1120 and the first free edge 1103 are connected to each other. The first radiating portion 1120 is arranged at intervals between the first free edge 1103, and the interval distance between the first radiating portion 1120 and the first free edge 1103 allows the first radiating portion 1120 to be electrically coupled or electromagnetically coupled with the first free edge 1103. The first coupling gap can refer to L1 in Figure 5. The first radiating portion 1120 includes at least one second grounding point 112a, and at least one second grounding point 112a is electrically connected to the ground layer 10. The present application does not specifically limit the number of second grounding points 112a. In the following embodiments, a plurality of second grounding points 112a arranged at intervals are taken as an example. Of course, in other embodiments, the number of second grounding points 112a may also be one. The second grounding point 112a and the ground layer 10 may be electrically connected through a microstrip line, a coaxial line, a probe, a spring, etc.

It can be understood that the first feeding point 1102 of the first antenna radiator 110 is electrically connected to the RF signal source 30, and can directly obtain the feeding current from the RF signal source 30 to achieve feeding. The first radiating branch 112 is coupled to the first free edge 1103 of the first antenna radiator 110, so the first radiating branch 112 can obtain the feeding current from the first antenna radiator 110 to achieve feeding.

The antenna assembly 1 provided in the present application includes a grounding layer 10 and a first radiation group 11, the first radiation group 11 is stacked and spaced with the grounding layer 10, the first radiation group 11 includes a first antenna radiator 110 and a first radiation branch 112, since the first antenna radiator 110 includes a first grounding edge 1101, a first feeding point 1102 and a first free edge 1103 arranged in sequence, the first grounding edge 1101 includes at least one first grounding point 110a, and at least one first grounding point 110a is electrically connected to the grounding layer 10, so that the current of the first grounding edge 1101 is relatively strong, and the first free edge 1103 is not grounded, so the electric field of the first free edge 1103 is relatively strong and the current is relatively weak, resulting in uneven current distribution of the first antenna radiator 110 as a whole and poor symmetry, and the first radiation branch 112 includes The first radiating portion 1120 is located on the side of the first free edge 1103 away from the first grounding edge 1101, and a first coupling gap is formed between the first radiating portion 1120 and the first free edge 1103, that is, the first radiating portion 1120 is coupled to the first free edge 1103, and the first radiating portion 1120 includes at least one second grounding point 112a, and at least one second grounding point 112a is electrically connected to the grounding layer 10, so that the current of the first radiating portion 1120 is stronger, which can improve the uniformity and symmetry of the current distribution of the first radiating group 11, so that the first radiating group 11 has a lower cross polarization. When applied to arrival angle measurement, the convergence of the phase difference curve between the first radiating group 11 and other radiating groups is improved, which is beneficial to improve the accuracy of the antenna component 1 in measuring the arrival angle.

Optionally, the size of the first coupling gap is greater than or equal to 0.2 mm and less than or equal to 1.5 mm. The smaller the size of the first coupling gap, the stronger the magnetic current of the first radiation group 11 in the first coupling gap, the smaller the cross-polarization of the first radiation group 11, and the more significant the effect of improving the angle measurement accuracy of the antenna assembly 1. It can be understood that by making the size of the first coupling gap greater than or equal to 0.2 mm and less than or equal to 1.5 mm, the effect of reducing the cross-polarization of the first radiation group 11 can be improved, which is more conducive to improving the accuracy of the antenna assembly 1 in measuring the arrival angle.

6, the second side edge 1105 is disposed opposite to the first side edge 1104. In the embodiment of the present application, the second side edge 1105 is disposed opposite to the first side edge 1104 along the Y-axis direction.

In a possible embodiment, as shown in FIG7 , the first radiation branch 112 further includes a second radiation portion 1121. The material of the second radiation portion 1121 is a conductive material. For example, the material of the second radiation portion 1121 may be metal, alloy, etc. The material of the second radiation portion 1121 may be the same as or different from the material of the first radiation portion 1120. One end of the second radiation portion 1121 is connected to the first radiation portion 1120, and the other end extends toward the side where the first antenna radiator 110 is located. In other words, the second radiation portion 1121 is bent and connected to the first radiation portion 1120. It can be understood that in this embodiment, the first radiation branch 112 is roughly L-shaped. Among them, the connection between the second radiation portion 1121 and the first radiation portion 1120 may be an integral connection or a split connection. After the second radiation portion 1121 is connected to the first radiation portion 1120, it is naturally conductive. The second radiation portion 1121 is arranged opposite to the first side 1104, and a second coupling gap is formed between the second radiation portion 1121 and the first side 1104. It is understandable that the second radiating portion 1121 is spaced apart from the first side 1104, and the spacing between the first radiating portion 1120 and the first side 1104 enables electrical or electromagnetic coupling between the second radiating portion 1121 and the first side 1104. The second coupling gap can refer to L2 in FIG.

Optionally, the size of the second coupling gap is greater than or equal to 0.2 mm and less than or equal to 1.5 mm. The smaller the size of the second coupling gap, the stronger the magnetic current of the first radiation group 11 in the second coupling gap, the smaller the cross-polarization of the first radiation group 11, and the more significant the effect of improving the angle measurement accuracy of the antenna assembly 1. It can be understood that by making the size of the second coupling gap greater than or equal to 0.2 mm and less than or equal to 1.5 mm, the effect of reducing the cross-polarization of the first radiation group 11 can be improved, which is more conducive to improving the accuracy of the antenna assembly 1 in measuring the angle of arrival. Among them, the size of the second coupling gap can be the same as or different from the size of the first coupling gap.

By making the first radiation branch 112 also include a second radiation portion 1121, one end of the second radiation portion 1121 is connected to the first radiation portion 1120, and the other end extends toward the side where the first antenna radiator 110 is located, and a second coupling gap is formed between the second radiation portion 1121 and the first side 1104 of the first antenna radiator 110, the second radiation portion 1121 can participate in the radiation, thereby improving the radiation performance of the first radiation group 11 and improving the gain of the antenna assembly 1. In addition, the second radiation portion 1121 is arranged opposite to the first side 1104, and the current direction of the second radiation portion 1121 and the first side 1104 under the excitation of the RF signal source is the same, which improves the second coupling gap and the magnetic flow symmetry around the second coupling gap, which is conducive to reducing the cross polarization of the first radiation group 11.

In another possible embodiment, as shown in FIG8 , the first radiation branch 112 further includes a third radiation portion 1122. The material of the third radiation portion 1122 is a conductive material. For example, the material of the third radiation portion 1122 may be metal, alloy, etc. The material of the third radiation portion 1122 may be the same as or different from the material of the first radiation portion 1120. One end of the third radiation portion 1122 is connected to the first radiation portion 1120, and the other end extends toward the side where the first antenna radiator 110 is located. In other words, the third radiation portion 1122 is bent and connected to the first radiation portion 1120. The connection between the third radiation portion 1122 and the first radiation portion 1120 may be an integral connection or a split connection. The third radiation portion 1122 is naturally conductive after being connected to the first radiation portion 1120. The third radiation portion 1122 and the second radiation portion 1121 are arranged opposite to each other along the Y-axis direction. In this embodiment, the first radiation branch 112 is roughly U-shaped. The third radiating portion 1122 is disposed opposite to the second side 1105, and a third coupling gap is formed between the third radiating portion 1122 and the second side 1105. It can be understood that the third radiating portion 1122 is spaced apart from the second side 1105, and the spacing distance between the third radiating portion 1122 and the second side 1105 enables electrical coupling or electromagnetic coupling to occur between the third radiating portion 1122 and the second side 1105. The third coupling gap can refer to L3 in FIG. 8 .

Optionally, the size of the third coupling gap is greater than or equal to 0.2 mm and less than or equal to 1.5 mm. The smaller the size of the third coupling gap, the stronger the magnetic current of the first radiation group 11 in the third coupling gap, the smaller the cross-polarization of the first radiation group 11, and the more significant the effect of improving the angle measurement accuracy of the antenna assembly 1. It can be understood that by making the size of the third coupling gap greater than or equal to 0.2 mm and less than or equal to 1.5 mm, the effect of reducing the cross-polarization of the first radiation group 11 can be improved, which is more conducive to improving the accuracy of the antenna assembly 1 in measuring the angle of arrival. Among them, the size of the third coupling gap can be the same as or different from the size of the first coupling gap.

By making the first radiating branch 112 also include a third radiating portion 1122, one end of the third radiating portion 1122 is connected to the first radiating portion 1120, and the other end extends toward the side where the first antenna radiator 110 is located. A third coupling gap is formed between the third radiating portion 1122 and the second side 1105 of the first antenna radiator 110, so that the third radiating portion 1122 can participate in radiation, thereby further improving the radiation performance of the first radiating group 11 and enhancing the gain of the antenna assembly 1. In addition, the first radiating branch 112 includes a first radiating portion 1120, a second radiating portion 1121 connected to one side of the first radiating portion 1120, and a third radiating portion 1122 connected to the other side of the first radiating portion 1120. The second radiating portion 1121 has the same current direction as the first side 1104 on the second coupling gap side, which improves the magnetic flow symmetry of the second coupling gap and the side around the second coupling gap. The third radiating portion 1122 has the same current direction as the second side 1105 on the third coupling gap side, which improves the magnetic flow symmetry of the third coupling gap and the side around the third coupling gap. While ensuring the radiation efficiency of the antenna component 1, the cross-polarization of the first radiating group 11 can be further reduced, so that in the application scenario of measuring the angle of arrival, the convergence of the phase difference curve between the first radiating group 11 and other radiating groups is further improved, which is more conducive to improving the accuracy of the antenna component 1 in measuring the angle of arrival.

Optionally, as shown in FIG9 , the second radiating portion 1121 and the third radiating portion 1122 are symmetrical about the line between the center point of the first grounding edge 1101 and the center point of the first free edge 1103 of the first antenna radiator 110. The line between the center point of the first grounding edge 1101 and the center point of the first free edge 1103 of the first antenna radiator 110 can refer to the M line in FIG9 . The symmetry of the second radiating portion 1121 and the third radiating portion 1122 about the line between the center point of the first grounding edge 1101 and the center point of the first free edge 1103 can be understood as the size of the second radiating portion 1121 is the same as the size of the third radiating portion 1122, and the spacing between the center of the second radiating portion 1121 and the center line of the first antenna radiator 110 along the X-axis direction is equal to the spacing between the center of the third radiating portion 1122 and the center line of the first antenna radiator 110 along the X-axis direction. In a possible embodiment, the size of the second radiating portion 1121 along the X-axis direction may be 5 mm, and the size of the second radiating portion 1121 along the Y-axis direction may be 1 mm; the size of the third radiating portion 1122 along the X-axis direction may be 5 mm, and the size of the third radiating portion 1122 along the Y-axis direction may be 1 mm.

Optionally, the size of the second coupling gap is the same as the size of the third coupling gap. In a possible embodiment, the size of the second coupling gap and the size of the third coupling gap may both be 0.4 mm.

By grounding the first radiating portion 1120, the second radiating portion 1121 and the third radiating portion 1122 are symmetrical about the line between the center point of the first grounded edge 1101 and the center point of the first free edge 1103, and the size of the second coupling gap is the same as the size of the third coupling gap, the symmetry of the first radiation group 11 can be improved, thereby improving the symmetry of the radiation pattern of the first radiation group 11.

10 and 11 , in a possible implementation, at least one second grounding point 112a includes a first sub-grounding point 112b and a second sub-grounding point 112c, and the first sub-grounding point 112b and the second sub-grounding point 112c are respectively located at two ends of the first radiation portion 1120. In this implementation, the processing technology of the first radiation branch 112 is simple and easy to implement.

As shown in Fig. 12, in another possible implementation, at least one second grounding point 112a includes a first sub-grounding point 112b, a second sub-grounding point 112c, and at least one third sub-grounding point 112d located between the first sub-grounding point 112b and the second sub-grounding point 112c. In this implementation, the electrical connection between the first radiation branch 112 and the grounding layer 10 is reliable and stable.

In another possible embodiment, as shown in FIG13 , the first radiation branch 112 further includes a fourth radiation portion 1123. The material of the fourth radiation portion 1123 is a conductive material. For example, the material of the fourth radiation portion 1123 may be metal, alloy, etc. The material of the fourth radiation portion 1123 may be the same as or different from the material of the first radiation portion 1120. The fourth radiation portion 1123 is connected between an end of the second radiation portion 1121 away from the first radiation portion 1120 and an end of the third radiation portion 1122 away from the first radiation portion 1120. The connection between the fourth radiation portion 1123 and the second radiation portion 1121 may be an integral connection or a split connection. The connection between the fourth radiation portion 1123 and the third radiation portion 1122 may be an integral connection or a split connection. The fourth radiation portion 1123 is naturally conductive after being connected to the second radiation portion 1121 and the third radiation portion 1122. The fourth radiating portion 1123 is located on the side of the first grounding edge 1101 of the first antenna radiator 110 away from the first free edge 1103. The fourth radiating portion 1123 is arranged opposite to the first radiating portion 1120 along the X-axis direction. It can be understood that in this embodiment, the first radiating portion 1120, the second radiating portion 1121, the third radiating portion 1122 and the fourth radiating portion 1123 form a frame-shaped first radiating branch 112. A fourth coupling gap is formed between the fourth radiating portion 1123 and the first grounding edge 1101. It can be understood that the fourth radiating portion 1123 is spaced apart from the first grounding edge 1101, and the spacing distance between the fourth radiating portion 1123 and the first grounding edge 1101 allows the fourth radiating portion 1123 to be electrically coupled or electromagnetically coupled with the first grounding edge 1101. The fourth coupling gap can refer to L4 in Figure 13.

By making the first radiation branch 112 further include the fourth radiation portion 1123, the fourth radiation portion 1123 is connected between the end of the second radiation portion 1121 away from the first radiation portion 1120 and the end of the third radiation portion 1122 away from the first radiation portion 1120, and a fourth coupling gap is formed between the fourth radiation portion 1123 and the first ground edge 1101 of the first antenna radiator 110, so that the fourth radiation portion 1123 can participate in the radiation, thereby further improving the radiation performance of the first radiation group 11 and enhancing the gain of the antenna assembly 1. In addition, the first radiation branch 112 including the fourth radiation portion 1123 is also conducive to improving the symmetry of the first radiation group 11 and improving the symmetry of the directional pattern of the first radiation group 11.

In a possible implementation, as shown in FIG14 , the antenna assembly 1 further includes a first feeder 13. One end of the first feeder 13 is electrically connected to the first feeding point 1102, and the other end of the first feeder 13 passes through the ground layer 10 and is used to electrically connect to the RF signal source 30. The first feeder 13 may be a metal probe, a metal spring, etc. In this implementation, the first antenna radiator 110 and the RF signal source 30 are electrically connected through the first feeder 13, which is conducive to reducing the size of the antenna assembly 1 in the XY plane.

In another possible implementation, as shown in FIG15 , the antenna assembly 1 further includes a second feeder 14. One end of the second feeder 14 is electrically connected to the first feeding point 1102, and the other end of the second feeder 14 extends to the outside of the first antenna radiator 110 via the side where the first ground edge 1101 is located, and is used to electrically connect to the RF signal source 30. The second feeder 14 may be a microstrip line, a coaxial line, etc. In this implementation, the first antenna radiator 110 and the RF signal source 30 are electrically connected through the second feeder 14, the structure is simple, and the position restriction of the RF signal source 30 is relatively low.

In one embodiment, the size of the first antenna radiator 110 of the antenna component 1 along the X-axis direction is 4.6 mm, the size of the first antenna radiator 110 along the Y-axis direction is 5 mm, the size of the first radiation branch 112 along the X-axis direction is 5.3 mm, the size of the first radiation branch 112 along the Y-axis direction is 7.8 mm, the first coupling gap is 0.5 mm, and the second coupling gap and the third coupling gap are both 0.4 mm. The distance between the first radiation group 11 and the ground layer 10 along the Z-axis direction is approximately 0.5 mm. Figure 16 is a return loss curve of the antenna component 1 of this embodiment. It can be seen from Figure 16 that the bandwidth of the antenna component 1 provided in this embodiment is relatively wide, and the center frequency of the antenna component 1 includes 8 GHz. Figure 17 is a radiation efficiency curve of the antenna component 1 of this embodiment. It can be seen from Figure 17 that the radiation efficiency of the antenna component 1 of this embodiment is relatively high. Figure 18 is a traditional PIFA The radiation pattern of the antenna, FIG19 is the radiation pattern of the antenna assembly 1 of this embodiment. By comparing FIG18 and FIG19, it can be seen that one end of the traditional PIFA antenna is grounded, resulting in serious deflection of the antenna pattern, the main beam deviates from the normal by 17°, and the 3dB beam width of the E plane is 86.8°. The antenna assembly 1 of this embodiment introduces the first radiation branch 112 to make the E plane pattern symmetrical, and the 3dB beam width of the E plane is 95.7°, which is better than the traditional PIFA antenna. FIG20 is a schematic diagram of the polarization ratio direction comparison of the antenna assembly 1 of this embodiment (right figure) and the traditional PIFA antenna (left figure). It can be seen from FIG20 that the antenna assembly 1 of this embodiment has a wider coverage range of polarization ratios above 10dB than the traditional PIFA antenna. FIG21 is the main polarization pattern of the E plane (left figure), the main polarization (1 line) pattern and the cross-polarization (2 line) pattern of the H plane (right figure) of the antenna assembly 1 provided in this embodiment. It can be seen from FIG21 that the cross-polarization of the H plane of the antenna assembly 1 of this embodiment is low. Figure 22 is a current distribution diagram of the antenna assembly 1 provided in this embodiment. It can be seen from Figure 22 that the current direction of the second radiating portion 1121 and the first side 1104 on the second coupling gap side is the same, and the current direction of the third radiating portion 1122 and the second side 1105 on the third coupling gap side is the same, which can improve the magnetic flow symmetry of the second coupling gap and the side around the second coupling gap, and improve the magnetic flow symmetry of the third coupling gap and the side around the third coupling gap.

Further, referring to FIG. 23 and FIG. 24 , the antenna assembly 1 further includes a second radiation group 15. The second radiation group 15 is stacked and spaced with the ground layer 10. The second radiation group 15 and the first radiation group 11 can be arranged in the same layer, or can be staggered in the direction in which they are stacked with the ground layer 10 (i.e., the Z-axis direction in the embodiment of the present application). In the embodiment of the present application, the second radiation group 15 and the first radiation group 11 are arranged in the same layer, that is, the second radiation group 15 and the first radiation group 11 can be arranged on the same surface of the dielectric substrate 12. The second radiation group 15 and the first radiation group 11 are arranged spaced apart along the first target direction. In the embodiment of the present application, the first target direction can refer to the X-axis direction in FIG. 23 , and is directly described as the first target direction X in the following embodiments. Among them, the first target direction X is also the width direction of the electronic device 100. In the present embodiment, the second radiation group 15 and the first radiation group 11 are arranged spaced apart along the first target direction X, and the first radiation group 11 and the second radiation group 15 form a horizontal angle measurement antenna group, which can be used to measure the azimuth in the angle of arrival of the electromagnetic wave signal. Of course, in other embodiments, the first target direction may also be the length direction of the electronic device 100, that is, the Y-axis direction. In this case, the second radiation group 15 and the first radiation group 11 form a vertical angle measurement antenna group, which can be used to measure the elevation angle in the angle of arrival of the electromagnetic wave signal. It can be understood that the first radiation group 11 and the second radiation group 15 are combined to form an angle measurement antenna group, which can be used to achieve two-dimensional angle measurement.

The second radiation group 15 includes a second antenna radiator 150. The material of the second antenna radiator 150 is a conductive material. For example, the material of the second antenna radiator 150 can be metal, alloy, etc. The material of the second antenna radiator 150 can be the same as or different from that of the first antenna radiator 110. The second antenna radiator 150 can operate in a quarter-wavelength resonant mode. The second antenna radiator 150 includes a second feeding point 1501. The second feeding point 1501 is used to electrically connect the RF signal source 30. Among them, the second antenna radiator 150 and the first antenna radiator 110 can be electrically connected to the same RF signal source 30, or to different RF signal sources 30. The second feeding point 1501 and the RF signal source 30 can be electrically connected through a microstrip line, a coaxial line, a probe, a spring, etc. It can be understood that the second feeding point 1501 of the second antenna radiator 150 is electrically connected to the RF signal source 30, and the RF signal can be directly obtained from the RF signal source 30 to achieve feeding. In other words, the RF signal source 30 can excite corresponding resonance on the second antenna radiator 150 through the second feeding point 1501 .

In a possible embodiment, as shown in FIG23 , the second antenna radiator 150 is a patch antenna radiator. The shape of the second antenna radiator 150 can be circular, elliptical, triangular, square, rectangular, other polygons, and various special shapes. In this embodiment, a rectangular second antenna radiator 150 is taken as an example. The second antenna radiator 150 is not electrically connected to the ground layer 10. At this time, the current distribution of the second antenna radiator 150 itself is uniform, and the cross polarization is small. When the second antenna radiator 150 is combined with the first radiation group 11 to form an angle measurement antenna group, the measured arrival angle of the electromagnetic wave signal is more accurate.

In another possible embodiment, as shown in FIG. 24 , the second antenna radiator 150 can be understood as a planar inverted F-type antenna radiator. The second antenna radiator 150 also includes a second ground edge 1502, a second free edge 1503, a third side 1504, and a fourth side 1505. The second ground edge 1502, the second feeding point 1501, and the second free edge 1503 are arranged in sequence. The third side 1504 is connected between one end of the second ground edge 1502 and one end of the second free edge 1503. The fourth side 1505 is connected between the other end of the second ground edge 1502 and the other end of the second free edge 1503. In the embodiment of the present application, the second ground edge 1502, the second feeding point 1501, and the second free edge 1503 are arranged in sequence along the X-axis direction. Of course, in other embodiments, the second ground edge 1502, the second feeding point 1501, and the second free edge 1503 can be arranged in sequence along the Y-axis direction. The second grounding edge 1502 includes at least one third grounding point 150a, and at least one third grounding point 150a is electrically connected to the grounding layer 10. The present application does not specifically limit the number of the third grounding points 150a. In the following embodiments, a plurality of third grounding points 150a arranged at intervals are taken as an example. Of course, in other embodiments, the number of the third grounding point 150a can also be one. When the number of the third grounding points 150a is small, the structure of the second radiation group 15 is simple and convenient to process. The third grounding point 150a can be electrically connected to the grounding layer 10 through a microstrip line, a coaxial line, a probe, a spring, etc. The second free edge 1503 can be understood as the edge of the second antenna radiator 150 that is not directly electrically connected to other components.

The second radiation group 15 also includes a second radiation branch 151. The material of the second radiation branch 151 is a conductive material. For example, the material of the second radiation branch 151 can be metal, alloy, etc. The material of the second radiation branch 151 can be the same as or different from the material of the second antenna radiator 150. The second radiation branch 151 can be used to generate a quarter-wavelength resonant mode. The second radiation branch 151 includes a fifth radiation portion 1510. The material of the fifth radiation portion 1510 is a conductive material. For example, the material of the fifth radiation portion 1510 can be metal, alloy, etc. The fifth radiation portion 1510 is located on the side of the second free edge 1503 away from the second ground edge 1502, and a fifth coupling gap is formed between the fifth radiation portion 1510 and the second free edge 1503. It can be understood that the fifth radiation portion 1510 is spaced apart from the second free edge 1503, and the spacing distance between the fifth radiation portion 1510 and the second free edge 1503 allows the fifth radiation portion 1510 to be electrically coupled or electromagnetically coupled with the second free edge 1503. The fifth coupling gap can refer to L5 in FIG. 24. The fifth radiating portion 1510 includes at least one fourth grounding point 151a, and at least one fourth grounding point 151a is electrically connected to the ground layer 10. The present application does not specifically limit the number of fourth grounding points 151a. In the following embodiments, a plurality of fourth grounding points 151a arranged at intervals are taken as an example. Of course, in other embodiments, the number of fourth grounding points 151a can also be one. The fourth grounding point 151a can be electrically connected to the ground layer 10 through a microstrip line, a coaxial line, a probe, a spring, etc.

The antenna assembly 1 provided in this embodiment includes a ground layer 10, a first radiation group 11 and a second radiation group 15. The combination of the first radiation group 11 and the second radiation group 15 can be used to realize two-dimensional angle measurement. Among them, the second radiation group 15 includes a second antenna radiator 150 and a second radiation branch 151. Since the second antenna radiator 150 includes a second ground edge 1502, a second feeding point 1501 and a second free edge 1503 arranged in sequence, the second ground edge 1502 includes at least one third ground point 150a, and the at least one third ground point 150a is electrically connected to the ground layer 10, so that the second ground edge The current of the second free edge 1502 is strong, and the second free edge 1503 is not grounded. Therefore, the electric field of the second free edge 1503 is strong and the current is weak, resulting in uneven current distribution of the second antenna radiator 150 and poor symmetry. The second radiation branch 151 includes a fifth radiation portion 1510, and the fifth radiation portion 1510 is located on the side of the second free edge 1503 away from the second grounded edge 1502, and a fifth coupling gap is formed between the fifth radiation portion 1510 and the second free edge 1503, that is, the fifth radiation portion 1510 is coupled to the second free edge 1503, and the fifth radiation portion 1510 is connected to the second free edge 1503. The radiating part 1510 includes at least one fourth grounding point 151a, and at least one fourth grounding point 151a is electrically connected to the ground layer 10, so that the current of the fifth radiating part 1510 is stronger, which can improve the uniformity and symmetry of the current distribution of the second radiating group 15, and make the second radiating group 15 have lower cross polarization. In the application scenario where the second radiating group 15 and the first radiating group 11 are combined to form an angle measuring antenna group for angle measurement, the convergence of the phase difference curve between the second radiating group 15 and the first radiating group 11 is improved, and the accuracy of the angle measuring antenna group in measuring the arrival angle is improved.

25 to 27, the third side 1504 is disposed opposite to the fourth side 1505. In the embodiment of the present application, the third side 1504 and the fourth side 1505 are disposed opposite to each other along the Y-axis direction.

In a possible embodiment, the second radiation branch 151 further includes a sixth radiation portion 1511 and/or a seventh radiation portion 1512. The material of the sixth radiation portion 1511 is a conductive material. For example, the material of the sixth radiation portion 1511 may be metal, alloy, etc. The material of the sixth radiation portion 1511 may be the same as or different from the material of the fifth radiation portion 1510. The material of the seventh radiation portion 1512 is a conductive material. For example, the material of the seventh radiation portion 1512 may be metal, alloy, etc. The material of the seventh radiation portion 1512 may be the same as or different from the material of the fifth radiation portion 1510. One end of the sixth radiation portion 1511 is connected to the fifth radiation portion 1510, and the other end extends toward the side where the second antenna radiator 150 is located. In other words, the sixth radiation portion 1511 is connected to the fifth radiation portion 1510 in a bent manner. One end of the seventh radiation portion 1512 is connected to the fifth radiation portion 1510, and the other end extends toward the side where the second antenna radiator 150 is located. In other words, the seventh radiating portion 1512 is bent and connected to the fifth radiating portion 1510. The connection between the sixth radiating portion 1511 and the fifth radiating portion 1510 can be an integral connection or a split connection. The sixth radiating portion 1511 is naturally conductive after being connected to the fifth radiating portion 1510. The connection between the seventh radiating portion 1512 and the fifth radiating portion 1510 can be an integral connection or a split connection. The seventh radiating portion 1512 is naturally conductive after being connected to the fifth radiating portion 1510. The sixth radiating portion 1511 is arranged opposite to the third side 1504, and a sixth coupling gap is formed between the sixth radiating portion 1511 and the third side 1504. It can be understood that the sixth radiating portion 1511 is spaced from the third side 1504, and the spacing distance between the sixth radiating portion 1511 and the third side 1504 allows the sixth radiating portion 1511 to be electrically coupled or electromagnetically coupled with the third side 1504. The sixth coupling gap can refer to L6 in FIG. 25. The seventh radiating portion 1512 is arranged opposite to the fourth side 1505, and a seventh coupling gap is formed between the seventh radiating portion 1512 and the fourth side 1505. It can be understood that the seventh radiating portion 1512 is spaced apart from the fourth side 1505, and the spacing distance between the seventh radiating portion 1512 and the fourth side 1505 allows the seventh radiating portion 1512 to be electrically coupled or electromagnetically coupled with the fourth side 1505. The seventh coupling gap can refer to L7 in FIG. 26. The seventh radiating portion 1512 is arranged opposite to the sixth radiating portion 1511 along the Y-axis direction. It can be understood that in this embodiment, the fifth radiating portion 1510, the sixth radiating portion 1511 and the seventh radiating portion 1512 form a second radiating branch 151 that is substantially U-shaped.

By making the second radiating branch 151 also include a sixth radiating portion 1511 and/or a seventh radiating portion 1512, one end of the sixth radiating portion 1511 is connected to the fifth radiating portion 1510, and the other end extends toward the side where the second antenna radiator 150 is located, one end of the seventh radiating portion 1512 is connected to the fifth radiating portion 1510, and the other end extends toward the side where the second antenna radiator 150 is located, a sixth coupling gap is formed between the sixth radiating portion 1511 and the third side 1504 of the second antenna radiator 150, so that the sixth radiating portion 1511 can participate in radiation, and a seventh coupling gap is formed between the seventh radiating portion 1512 and the fourth side 1505 of the second antenna radiator 150, so that the seventh radiating portion 1512 can participate in radiation, thereby improving the radiation performance of the second radiation group 15 and enhancing the gain of the antenna assembly 1. In addition, the second radiation branch 151 includes a fifth radiation portion 1510, a sixth radiation portion 1511 connected to one side of the fifth radiation portion 1510, and a seventh radiation portion 1512 connected to the other side of the fifth radiation portion 1510. The sixth radiation portion 1511 has the same current direction as the third side 1504, which improves the magnetic flow symmetry of the sixth coupling gap and the side around the sixth coupling gap. The seventh radiation portion 1512 has the same current direction as the fourth side 1505, which improves the magnetic flow symmetry of the seventh coupling gap and the side around the seventh coupling gap. While ensuring the radiation efficiency of the antenna component 1, the cross-polarization of the second radiation group 15 can be further reduced, so that in the application scenario of the second radiation group 15 for measuring the angle of arrival, the convergence of the phase difference curve between the second radiation group 15 and the first radiation group 11 is further improved, which is more conducive to improving the accuracy of the antenna component 1 in measuring the angle of arrival.

Optionally, the size of the sixth coupling gap is greater than or equal to 0.2 mm and less than or equal to 1.5 mm. The smaller the size of the sixth coupling gap, the stronger the magnetic current of the second radiation group 15 in the sixth coupling gap, the smaller the cross-polarization of the second radiation group 15, and the more significant the effect of improving the angle measurement accuracy of the antenna assembly 1. It can be understood that by making the size of the sixth coupling gap greater than or equal to 0.2 mm and less than or equal to 1.5 mm, the effect of reducing the cross-polarization of the second radiation group 15 can be improved, which is more conducive to improving the accuracy of the antenna assembly 1 in measuring the angle of arrival. Among them, the size of the sixth coupling gap can be the same as or different from the size of the fifth coupling gap.

Optionally, the size of the seventh coupling gap is greater than or equal to 0.2 mm and less than or equal to 1.5 mm. The smaller the size of the seventh coupling gap, the stronger the magnetic current of the second radiation group 15 in the seventh coupling gap, the smaller the cross-polarization of the second radiation group 15, and the more significant the effect of improving the angle measurement accuracy of the antenna assembly 1. It can be understood that by making the size of the sixth coupling gap greater than or equal to 0.2 mm and less than or equal to 1.5 mm, the effect of reducing the cross-polarization of the second radiation group 15 can be improved, which is more conducive to improving the accuracy of the antenna assembly 1 in measuring the angle of arrival. Among them, the size of the seventh coupling gap can be the same as or different from the size of the fifth coupling gap.

Optionally, in an embodiment where the second radiation branch 151 includes a sixth radiation portion 1511 and a seventh radiation portion 1512, the sixth radiation portion 1511 and the seventh radiation portion 1512 may be symmetrical about a line between the center point of the second grounding edge 1502 and the center point of the second free edge 1503. The line between the center point of the second grounding edge 1502 and the center point of the second free edge 1503 may refer to the N line in FIG. 27. The line between the center point of the second grounding edge 1502 and the center point of the second free edge 1503 of the sixth radiation portion 1511 and the seventh radiation portion 1512 may be understood as the size of the sixth radiation portion 1511 being the same as the size of the seventh radiation portion 1512. In a possible embodiment, the size of the sixth radiation portion 1511 along the X-axis direction may be 5 mm, and the size of the sixth radiation portion 1511 along the Y-axis direction may be 1 mm; the size of the seventh radiation portion 1512 along the X-axis direction may be 5 mm, and the size of the seventh radiation portion 1512 along the Y-axis direction may be 1 mm.

Optionally, the size of the sixth coupling gap is the same as the size of the seventh coupling gap. In a possible embodiment, the size of the sixth coupling gap and the size of the seventh coupling gap may both be 0.4 mm.

By making the sixth radiating portion 1511 and the seventh radiating portion 1512 symmetrical about the line between the center point of the second ground edge 1502 and the center point of the second free edge 1503, and the size of the sixth coupling gap is the same as the size of the seventh coupling gap, the symmetry of the first radiating group 11 can be improved. Thereby, the symmetry of the directivity pattern of the first radiation group 11 is improved.

In a possible embodiment, referring to FIG. 28 and FIG. 29 , the first radiation group 11 and the second radiation group 15 are symmetrical about the perpendicular bisector of the line between the first radiation group 11 and the second radiation group 15 along the first target direction. In other words, the first radiation group 11 and the second radiation group 15 are arranged in mirror image. Specifically, the first radiation portion 1120, the first free edge 1103, the first grounding edge 1101, the second grounding edge 1502, the second free edge 1503 and the fifth radiation portion 1510 are arranged in sequence along the first target direction; or, the first grounding edge 1101, the first free edge 1103, the first radiation portion 1120, the fifth radiation portion 1510, the second free edge 1503 and the second grounding edge 1502 are arranged in sequence along the first target direction. By arranging the first radiation group 11 and the second radiation group 15 in mirror image, it is beneficial to reduce the size of the antenna assembly 1 along the X-axis direction, so that the distance between the phase center of the first radiation group 11 and the phase center of the second radiation group 15 is farther.

In another possible embodiment, referring to FIG. 30 and FIG. 31 , the first radiating portion 1120, the first free edge 1103, the first grounding edge 1101, the fifth radiating portion 1510, the second free edge 1503 and the second grounding edge 1502 are sequentially arranged along the first target direction; or, the first grounding edge 1101, the first free edge 1103, the first radiating portion 1120, the second grounding edge 1502, the second free edge 1503 and the fifth radiating portion 1510 are sequentially arranged along the first target direction. In other words, the first radiating group 11 and the second radiating group 15 are arranged in sequence.

Further, referring to FIGS. 32 to 34 , the antenna assembly 1 further includes a third radiation group 16. The third radiation group 16 is stacked and spaced with the ground layer 10. The third radiation group 16 can be arranged in the same layer as the first radiation group 11 and the second radiation group 15, or can be staggered in the direction in which the third radiation group 16 is stacked with the ground layer 10 (i.e., the Z-axis direction in the embodiment of the present application). In the embodiment of the present application, the third radiation group 16 is arranged in the same layer as the first radiation group 11, that is, the third radiation group 16 and the first radiation group 11 can be arranged on the same surface of the dielectric substrate 12. The third radiation group 16 and the first radiation group 11 are arranged spaced apart along the second target direction, or the third radiation group 16 and the second radiation group 15 are arranged spaced apart along the second target direction. The second target direction can refer to the Y-axis direction in FIG. 32 , and is directly described as the second target direction Y in the following embodiments. Among them, the second target direction Y is also the length direction of the electronic device 100. In a possible embodiment, as shown in FIG32, the third radiation group 16 and the first radiation group 11 are arranged at intervals along the second target direction Y, and the third radiation group 16 and the first radiation group 11 form a vertical angle measurement antenna group, which can be used to measure the pitch angle in the angle of arrival of the electromagnetic wave signal. In another possible embodiment, as shown in FIG33, the third radiation group 16 and the second radiation group 15 can be arranged at intervals along the second target direction Y, and the third radiation group 16 and the second radiation group 15 form a vertical angle measurement antenna group, which can be used to measure the pitch angle in the angle of arrival of the electromagnetic wave signal. In the above two embodiments, the first radiation group 11 and the second radiation group 15 form a horizontal angle measurement antenna group, and the third radiation group 16 and one of the first radiation group 11 and the second radiation group 15 form a vertical angle measurement antenna group, which can achieve three-dimensional angle measurement. Of course, in other embodiments, as shown in FIG. 34 , the second target direction may also be the width direction of the electronic device 100, that is, the X-axis direction. In this case, the third radiation group 16 and the first radiation group 11 may also form a horizontal angle measurement antenna group, which may be used to measure the azimuth in the angle of arrival of the electromagnetic wave signal. The third radiation group 16 and the second radiation group 15 may also form a horizontal angle measurement antenna group, which may be used to measure the azimuth in the angle of arrival of the electromagnetic wave signal, thereby facilitating the calculation of the average value of the angle of arrival measured by a plurality of horizontal angle measurement antenna groups to improve the two-dimensional angle measurement accuracy. In this embodiment, the second target direction is the same as or opposite to the first target direction. The third radiation group 16 includes a third antenna radiator 160. The material of the third antenna radiator 160 is a conductive material. For example, the material of the third antenna radiator 160 may be metal, alloy, etc. The material of the third antenna radiator 160 may be the same as or different from that of the first antenna radiator 110. The third antenna radiator 160 may operate in a quarter-wavelength resonant mode. The third antenna radiator 160 includes a third feeding point 1601. The third feeding point 1601 is electrically connected to the RF signal source 30. The third feeding point 1601 can be electrically connected to the RF signal source 30 through a microstrip line, a coaxial line, a probe, a spring, etc. It can be understood that the third feeding point 1601 of the third antenna radiator 160 is electrically connected to the RF signal source 30, and the RF signal can be directly obtained from the RF signal source 30 to achieve feeding. In other words, the RF signal source 30 can excite the corresponding resonance on the third antenna radiator 160 through the third feeding point 1601.

In a possible embodiment, please refer to Figures 32 to 34, the third antenna radiator 160 is a patch antenna radiator. The shape of the third antenna radiator 160 can be circular, elliptical, triangular, square, rectangular, other polygons and various special shapes. In this embodiment, the rectangular third antenna radiator 160 is taken as an example. The third antenna radiator 160 is not electrically connected to the ground layer 10. At this time, the current distribution of the third antenna radiator 160 itself is uniform, and the cross polarization is small. When the third antenna radiator 160 is combined with the first radiation group 11 or the second radiation group 15 to form an angle measurement antenna group, the measured arrival angle of the electromagnetic wave signal is more accurate.

The following embodiment takes the third radiation group 16 and the first radiation group 11 arranged alternately along the second target direction Y as an example to describe in detail another third antenna radiator 160 provided by the present application.

In another possible embodiment, as shown in FIG. 35 , the third antenna radiator 160 can be understood as a planar inverted F-type antenna radiator. The third antenna radiator 160 also includes a third grounding edge 1602 and a third free edge 1603. The third grounding edge 1602, the third feeding point 1601 and the third free edge 1603 are arranged in sequence. In the embodiment of the present application, the third grounding edge 1602, the third feeding point 1601 and the third free edge 1603 are arranged in sequence along the X-axis direction. Of course, in other embodiments, the third grounding edge 1602, the third feeding point 1601 and the third free edge 1603 can be arranged in sequence along the Y-axis direction. The third grounding edge 1602 includes at least one fifth grounding point 160a, and at least one fifth grounding point 160a is electrically connected to the ground layer 10. The present application does not specifically limit the number of the fifth grounding points 160a. In the following embodiments, a plurality of fifth grounding points 160a arranged at intervals are taken as an example. Of course, in other embodiments, the number of the fifth grounding point 160a can also be one. The fifth grounding point 160a may be electrically connected to the grounding layer 10 via a microstrip line, a coaxial line, a probe, a spring, etc. The third free edge 1603 may be understood as an edge of the third antenna radiator 160 that is not directly electrically connected to other components.

The third radiation group 16 also includes a third radiation branch 161. The material of the third radiation branch 161 is a conductive material. For example, the material of the third radiation branch 161 can be metal, alloy, etc. The material of the third radiation branch 161 can be the same as or different from the material of the third antenna radiator 160. The third radiation branch 161 can be used to generate a quarter-wavelength resonant mode. The third radiation branch 161 includes an eighth radiation portion 1610. The material of the eighth radiation portion 1610 is a conductive material. For example, the material of the eighth radiation portion 1610 can be metal, alloy, etc. The eighth radiation portion 1610 is located on the side of the third free edge 1603 away from the third ground edge 1602, and an eighth coupling gap is formed between the eighth radiation portion 1610 and the third free edge 1603. It can be understood that the eighth radiation portion 1610 is spaced apart from the third free edge 1603, and the spacing distance between the eighth radiation portion 1610 and the third free edge 1603 allows the eighth radiation portion 1610 to be electrically coupled or electromagnetically coupled with the third free edge 1603. The eighth coupling gap can refer to L8 in FIG. 35. The eighth radiating portion 1610 includes at least one sixth grounding point 161a, and at least one sixth grounding point 161a is electrically connected to the ground layer 10. The present application does not specifically limit the number of the sixth grounding points 161a. In the following embodiments, multiple sixth grounding points 161a are used. The sixth grounding point 161a arranged at intervals is taken as an example. Of course, in other embodiments, the number of the sixth grounding point 161a can also be one. The sixth grounding point 161a can be electrically connected to the grounding layer 10 through a microstrip line, a coaxial line, a probe, a spring, etc. It can be understood that the third radiation branch 161 is coupled to the third free edge 1603 of the third antenna radiator 160, so that the third radiation branch 161 can obtain the radio frequency signal from the third antenna radiator 160 to achieve feeding.

The antenna assembly 1 provided in this embodiment includes a first radiation group 11, a second radiation group 15 and a third radiation group 16. The combination of the first radiation group 11, the second radiation group 15 and the third radiation group 16 can be used to achieve three-dimensional angle measurement. Among them, the third radiation group 16 includes a third antenna radiator 160 and a third radiation branch 161. Since the third antenna radiator 160 includes a third grounding edge 1602, a third feeding point 1601 and a third free edge 1603 arranged in sequence, the third grounding edge 1602 includes at least one fifth grounding point 160a, and at least one fifth grounding point 160a is electrically connected to the ground layer 10. The current of the third grounding edge 1602 is relatively strong, and the third free edge 1603 is not grounded. Therefore, the electric field of the third free edge 1603 is relatively strong and the current is relatively weak, resulting in uneven current distribution and poor symmetry of the third antenna radiator 160. The third radiation branch 161 includes an eighth radiation portion 1610, and the eighth radiation portion 1610 is located on the side of the third free edge 1603 away from the third grounding edge 1602, and an eighth coupling gap is formed between the eighth radiation portion 1610 and the third free edge 1603. That is, the eighth radiating portion 1610 is coupled with the third free edge 1603, and the eighth radiating portion 1610 includes at least one sixth grounding point 161a, and at least one sixth grounding point 161a is electrically connected to the grounding layer 10, so that the current of the eighth radiating portion 1610 is stronger, which can improve the uniformity and symmetry of the overall current distribution of the third radiation group 16, so that the third radiation group 16 has a lower cross-polarization, and in the application scenario where the third radiation group 16, the second radiation group 15 and the first radiation group 11 are combined to form a three-dimensional angle measurement antenna group and angle measurement is performed, the convergence of the phase difference curve between the third radiation group 16 and the first radiation group 11 is improved, and the convergence of the phase difference curve between the third radiation group 16 and the second radiation group 15 is improved, so that the accuracy of the arrival angle measured by the three-dimensional angle measurement antenna group formed by the combination of the third radiation group 16, the second radiation group 15 and the first radiation group 11 is higher.

Wherein, referring to FIGS. 36 to 38, the third antenna radiator 160 further includes a fifth side 1604 and a sixth side 1605. The fifth side 1604 is connected between one end of the third ground edge 1602 and one end of the third free edge 1603. The sixth side 1605 is connected between the other end of the third ground edge 1602 and the other end of the third free edge 1603. The fifth side 1604 and the sixth side 1605 are arranged opposite to each other. In the embodiment of the present application, the fifth side 1604 and the sixth side 1605 are arranged opposite to each other along the Y-axis direction.

In a possible embodiment, the third radiation branch 161 further includes a ninth radiation portion 1611 and/or a tenth radiation portion 1612. The material of the ninth radiation portion 1611 is a conductive material. For example, the material of the ninth radiation portion 1611 may be metal, alloy, etc. The material of the ninth radiation portion 1611 may be the same as or different from the material of the eighth radiation portion 1610. The material of the tenth radiation portion 1612 is a conductive material. For example, the material of the tenth radiation portion 1612 may be metal, alloy, etc. The material of the tenth radiation portion 1612 may be the same as or different from the material of the eighth radiation portion 1610. One end of the ninth radiation portion 1611 is connected to the eighth radiation portion 1610, and the other end extends toward the side where the third antenna radiator 160 is located. In other words, the ninth radiation portion 1611 is connected to the eighth radiation portion 1610 in a bent manner. One end of the tenth radiation portion 1612 is connected to the eighth radiation portion 1610, and the other end extends toward the side where the third antenna radiator 160 is located. In other words, the tenth radiating portion 1612 is bent and connected to the eighth radiating portion 1610. The connection between the ninth radiating portion 1611 and the eighth radiating portion 1610 can be an integral connection or a split connection. The ninth radiating portion 1611 is naturally conductive after being connected to the eighth radiating portion 1610. The connection between the tenth radiating portion 1612 and the eighth radiating portion 1610 can be an integral connection or a split connection. The tenth radiating portion 1612 is naturally conductive after being connected to the eighth radiating portion 1610. The ninth radiating portion 1611 is arranged opposite to the fifth side 1604, and a ninth coupling gap is formed between the ninth radiating portion 1611 and the fifth side 1604. It can be understood that the ninth radiating portion 1611 is spaced apart from the fifth side 1604, and the spacing distance between the ninth radiating portion 1611 and the fifth side 1604 allows the ninth radiating portion 1611 to be electrically coupled or electromagnetically coupled with the fifth side 1604. The ninth coupling gap can refer to L9 in FIG. 32. The tenth radiating portion 1612 is arranged opposite to the sixth side 1605, and a tenth coupling gap is formed between the tenth radiating portion 1612 and the sixth side 1605. It can be understood that the tenth radiating portion 1612 is spaced apart from the sixth side 1605, and the spacing distance between the tenth radiating portion 1612 and the sixth side 1605 allows the tenth radiating portion 1612 to be electrically coupled or electromagnetically coupled with the sixth side 1605. The tenth coupling gap can refer to L10 in FIG. 33. The tenth radiating portion 1612 is arranged opposite to the ninth radiating portion 1611 along the Y-axis direction. It can be understood that in this embodiment, the eighth radiating portion 1610, the ninth radiating portion 1611 and the tenth radiating portion 1612 form a third radiating branch 161 that is roughly U-shaped.

By making the third radiating branch 161 also include a ninth radiating portion 1611 and/or a tenth radiating portion 1612, one end of the ninth radiating portion 1611 is connected to the eighth radiating portion 1610, and the other end extends toward the side where the third antenna radiator 160 is located, and one end of the tenth radiating portion 1612 is connected to the eighth radiating portion 1610, and the other end extends toward the side where the third antenna radiator 160 is located, a ninth coupling gap is formed between the ninth radiating portion 1611 and the fifth side 1604 of the third antenna radiator 160, so that the ninth radiating portion 1611 can participate in radiation, and a tenth coupling gap is formed between the tenth radiating portion 1612 and the sixth side 1605 of the third antenna radiator 160, so that the tenth radiating portion 1612 can participate in radiation, thereby improving the radiation performance of the third radiation group 16 and enhancing the gain of the antenna assembly 1. In addition, the third radiation branch 161 includes an eighth radiation portion 1610, a ninth radiation portion 1611 connected to one side of the eighth radiation portion 1610, and a tenth radiation portion 1612 connected to the other side of the eighth radiation portion 1610. The ninth radiation portion 1611 has the same current direction as the fifth side 1604, which improves the magnetic flow symmetry of the ninth coupling gap and the surrounding side of the ninth coupling gap. The tenth radiation portion 1612 has the same current direction as the sixth side 1605, which improves the magnetic flow symmetry of the tenth coupling gap and the surrounding side of the tenth coupling gap. While ensuring the radiation efficiency of the antenna component 1, the cross-polarization of the third radiation group 16 can be further reduced, so that in the application scenario of the third radiation group 16 for angle of arrival measurement, the convergence of the phase difference curve between the first radiation group 11 and the second radiation group 15 is further improved, which is more conducive to improving the accuracy of the antenna component 1 in measuring the angle of arrival.

Optionally, the size of the ninth coupling gap is greater than or equal to 0.2 mm and less than or equal to 1.5 mm. The smaller the size of the ninth coupling gap, the stronger the magnetic current of the third radiation group 16 in the ninth coupling gap, the smaller the cross-polarization of the third radiation group 16, and the more significant the effect of improving the angle measurement accuracy of the antenna assembly 1. It can be understood that by making the size of the ninth coupling gap greater than or equal to 0.2 mm and less than or equal to 1.5 mm, the effect of reducing the cross-polarization of the third radiation group 16 can be improved, which is more conducive to improving the accuracy of the antenna assembly 1 in measuring the angle of arrival. Among them, the size of the ninth coupling gap can be the same as or different from the size of the eighth coupling gap.

Optionally, the size of the tenth coupling gap is greater than or equal to 0.2 mm and less than or equal to 1.5 mm. The smaller the size of the tenth coupling gap, the stronger the magnetic current of the third radiation group 16 in the tenth coupling gap, the smaller the cross-polarization of the third radiation group 16, and the more significant the effect of improving the angle measurement accuracy of the antenna assembly 1. It can be understood that by making the size of the ninth coupling gap greater than or equal to 0.2 mm and less than or equal to 1.5 mm, the effect of reducing the cross-polarization of the third radiation group 16 can be improved, which is more conducive to improving the accuracy of the antenna assembly 1 in measuring the arrival angle. Among them, The size of the tenth coupling gap may be the same as or different from the size of the eighth coupling gap.

Optionally, in an embodiment where the third radiation branch 161 includes a ninth radiation portion 1611 and a tenth radiation portion 1612, the ninth radiation portion 1611 and the tenth radiation portion 1612 are symmetrical about the center line of the third antenna radiator 160. The center line of the third antenna radiator 160 can refer to the G line in FIG. 38. The symmetry of the ninth radiation portion 1611 and the tenth radiation portion 1612 about the center line of the third antenna radiator 160 can be understood as the size of the ninth radiation portion 1611 being the same as the size of the tenth radiation portion 1612. In a possible embodiment, the size of the ninth radiation portion 1611 along the X-axis direction can be 5 mm, and the size of the ninth radiation portion 1611 along the Y-axis direction can be 1 mm; the size of the tenth radiation portion 1612 along the X-axis direction can be 5 mm, and the size of the tenth radiation portion 1612 along the Y-axis direction can be 1 mm.

Optionally, the size of the ninth coupling gap is the same as the size of the tenth coupling gap. In a possible embodiment, the size of the ninth coupling gap and the size of the tenth coupling gap may both be 0.4 mm.

By making the ninth radiating portion 1611 and the tenth radiating portion 1612 symmetrical about the center line of the third antenna radiator 160 and the size of the ninth coupling gap being the same as the size of the tenth coupling gap, the symmetry of the first radiating group 11 can be improved, thereby improving the symmetry of the radiation pattern of the first radiating group 11.

The features mentioned in the specification, claims and drawings can be arbitrarily combined with each other as long as they are meaningful within the scope of the present application. The advantages and features described for the antenna assembly 1 are applicable to the electronic device 100 in a corresponding manner. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application, and these improvements and modifications are also regarded as the scope of protection of the present application.

Claims

An antenna assembly, comprising:

ground plane; and

A first radiation group is stacked and spaced with the ground layer, the first radiation group includes a first antenna radiator and a first radiation branch, the first antenna radiator includes a first ground edge, a first feeding point, a first free edge, a first side edge and a second side edge, the first ground edge, the first feeding point and the first free edge are arranged in sequence, the first side edge is connected between one end of the first ground edge and one end of the first free edge, the second side edge is connected between the other end of the first ground edge and the other end of the first free edge, the first ground edge includes at least one first grounding point, the at least one first grounding point is electrically connected to the ground layer, the first feeding point is used to electrically connect to a radio frequency signal source, the first radiation branch includes a first radiation portion, the first radiation portion is located on a side of the first free edge away from the first ground edge, and a first coupling gap is formed between the first radiation portion and the first free edge, the first radiation portion includes at least one second grounding point, the at least one second grounding point is electrically connected to the ground layer.
According to the antenna assembly according to claim 1, the first radiating branch also includes a second radiating portion, one end of the second radiating portion is connected to the first radiating portion, and the other end extends toward the side where the first antenna radiator is located, the second radiating portion is arranged opposite to the first side, and a second coupling gap is formed between the second radiating portion and the first side.
According to the antenna assembly of claim 2, the second side is arranged opposite to the first side, the first radiation branch also includes a third radiation portion, one end of the third radiation portion is connected to the first radiation portion, and the other end extends toward the side where the first antenna radiator is located, the third radiation portion is arranged opposite to the second side, and a third coupling gap is formed between the second radiation portion and the second side.
According to the antenna assembly of claim 3, the second radiating portion and the third radiating portion are symmetrical about a line between a center point of the first ground edge and a center point of the first free edge.
According to the antenna assembly of claim 3, the size of the first coupling gap is greater than or equal to 0.2 mm and less than or equal to 1.5 mm; the size of the second coupling gap is greater than or equal to 0.2 mm and less than or equal to 1.5 mm; the size of the third coupling gap is greater than or equal to 0.2 mm and less than or equal to 1.5 mm.
According to the antenna assembly of claim 3, a size of the second coupling gap is the same as a size of the third coupling gap.
According to the antenna assembly according to claim 3, the first radiating branch also includes a fourth radiating portion, the fourth radiating portion is connected between an end of the second radiating portion away from the first radiating portion and an end of the third radiating portion away from the first radiating portion, the fourth radiating portion is located on a side of the first grounding edge away from the first free edge, and a fourth coupling gap is formed between the fourth radiating portion and the first grounding edge.
According to the antenna assembly according to any one of claims 1 to 7, the at least one second grounding point includes a first sub-grounding point and a second sub-grounding point, and the first sub-grounding point and the second sub-grounding point are respectively located at two ends of the first radiating portion.
According to the antenna assembly of claim 8, the at least one second grounding point further includes at least one third sub-grounding point, and the at least one third sub-grounding point is located between the first sub-grounding point and the second sub-grounding point.
According to any one of claims 1 to 7, the antenna assembly further comprises a first feeding element, one end of the first feeding element is electrically connected to the first feeding point, and the other end of the first feeding element passes through the ground layer and is used to electrically connect to the RF signal source.
According to any one of claims 1 to 7, the antenna assembly further comprises a second feeding element, one end of the second feeding element is electrically connected to the first feeding point, and the other end of the second feeding element extends outside the first antenna radiator through the side where the first ground edge is located, and is used to electrically connect to the RF signal source.
According to any one of claims 1 to 7, the antenna assembly further comprises a second radiation group, the second radiation group is stacked and spaced apart from the ground layer, and the second radiation group and the first radiation group are spaced apart from each other along a first target direction, the second radiation group comprises a second antenna radiator, the second antenna radiator comprises a second feeding point, and the second feeding point is used to electrically connect to the RF signal source.
According to the antenna assembly according to claim 12, the second antenna radiator also includes a second grounding edge, a second free edge, a third side edge and a fourth side edge, the second grounding edge, the second feeding point and the second free edge are arranged in sequence, the third side edge is connected between one end of the second grounding edge and one end of the second free edge, the fourth side edge is connected between the other end of the second grounding edge and the other end of the second free edge, the second grounding edge includes at least one third grounding point, and the at least one third grounding point is electrically connected to the ground layer, the second radiation group also includes a second radiation branch, the second radiation branch includes a fifth radiation portion, the fifth radiation portion is located on the side of the second free edge away from the second grounding edge, and a fifth coupling gap is formed between the fifth radiation portion and the second free edge, the fifth radiation portion includes at least one fourth grounding point, and the at least one fourth grounding point is electrically connected to the ground layer.
According to the antenna assembly of claim 13, the third side is arranged opposite to the fourth side, the second radiation branch also includes a sixth radiation portion and/or a seventh radiation portion, one end of the sixth radiation portion is connected to the fifth radiation portion, and the other end extends toward the side where the second antenna radiator is located, the sixth radiation portion is arranged opposite to the third side, and a sixth coupling gap is formed between the sixth radiation portion and the third side, one end of the seventh radiation portion is connected to the fifth radiation portion, and the other end extends toward the side where the second antenna radiator is located, the seventh radiation portion is arranged opposite to the fourth side, and a seventh coupling gap is formed between the seventh radiation portion and the fourth side.
According to the antenna assembly of claim 13 or 14, the first radiation group and the second radiation group are symmetrical about a perpendicular bisector of a line connecting the first radiation group and the second radiation group along the first target direction.
According to the antenna assembly of claim 13 or 14, the first radiating portion, the first free edge, the first ground edge, the fifth radiating portion, the second free edge and the second ground edge are arranged in sequence along the first target direction; or the first ground The first free edge, the first radiating portion, the second ground edge, the second free edge and the fifth radiating portion are arranged in sequence along the first target direction.
According to the antenna assembly of claim 12, the antenna assembly also includes a third radiation group, the third radiation group is stacked and spaced apart with the ground layer, the third radiation group and the first radiation group are spaced apart along the second target direction, or the third radiation group and the second radiation group are spaced apart along the second target direction, the third radiation group includes a third antenna radiator, the third antenna radiator includes a third feeding point, and the third feeding point is electrically connected to the RF signal source, wherein the second target direction intersects with the first target direction.
According to the antenna assembly according to claim 17, the third antenna radiator also includes a third grounding edge and a third free edge, the third grounding edge, the third feeding point and the third free edge are arranged in sequence, the third grounding edge includes at least one fifth grounding point, and the at least one fifth grounding point is electrically connected to the ground layer, the third radiation group also includes a third radiation branch, the third radiation branch includes an eighth radiation portion, the eighth radiation portion is located on the side of the third free edge away from the third grounding edge, and an eighth coupling gap is formed between the eighth radiation portion and the third free edge, and the eighth radiation portion includes at least one sixth grounding point, and the at least one sixth grounding point is electrically connected to the ground layer.
According to the antenna assembly of claim 18, the third antenna radiator also includes a fifth side connected between one end of the third grounding edge and one end of the third free edge and a sixth side connected between the other end of the third grounding edge and the other end of the third free edge, the fifth side being arranged opposite to the sixth side, the third radiation branch also includes a ninth radiation portion and/or a tenth radiation portion, one end of the ninth radiation portion is connected to the eighth radiation portion, and the other end extends toward the side where the third antenna radiator is located, the ninth radiation portion is arranged opposite to the fifth side, and a ninth coupling gap is formed between the ninth radiation portion and the fifth side, one end of the tenth radiation portion is connected to the eighth radiation portion, and the other end extends toward the side where the third antenna radiator is located, the tenth radiation portion is arranged opposite to the sixth side, and a tenth coupling gap is formed between the tenth radiation portion and the sixth side.
An electronic device comprises a device body and an antenna assembly as claimed in any one of claims 1 to 19, wherein the device body is used to carry the antenna assembly.