CN117810675A

CN117810675A - Antenna assembly, antenna device and electronic equipment

Info

Publication number: CN117810675A
Application number: CN202211231952.5A
Authority: CN
Inventors: 雍征东
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2024-04-02

Abstract

The application provides an antenna assembly, an antenna device and electronic equipment. The antenna assembly includes a first radiating group. The first radiating group comprises a first antenna radiator and at least one second antenna radiator along a first target direction or a second target direction, the first antenna radiator is coupled with the second antenna radiator to form a first coupling gap, and a first grounding point of the first antenna radiator and a second grounding point of the second antenna radiator are respectively positioned at two sides of a first feed point of the first radiating group. The antenna arrangement comprises a second radiation group and an antenna assembly. The electronic device includes a device body and an antenna apparatus. The cross polarization of the antenna assembly, the antenna device and the electronic equipment is small, and the angle measurement precision is improved.

Description

Antenna assembly, antenna device and electronic equipment

Technical Field

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

Background

In the technical scheme that the phase difference is determined by a plurality of antennas which are arranged at intervals according to a specific direction so as to realize angle measurement, the convergence of a phase difference curve between the plurality of antennas is poor due to the cross polarization influence of the antennas, so that the angle measurement precision is not high.

Disclosure of Invention

The application provides an antenna assembly, an antenna device and electronic equipment capable of reducing cross polarization.

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

a first radiating group including a first antenna radiator and at least one second antenna radiator arranged at intervals along a first target direction or a second target direction, the first antenna radiator being coupled with the second antenna radiator and forming a first coupling gap, one of the first antenna radiator and the second antenna radiator including a first feeding point for electrically connecting a radio frequency signal source, the first antenna radiator including at least one first ground point for electrically connecting a reference ground, the second antenna radiator including at least one second ground point for electrically connecting the reference ground; the first target direction intersects with the second target direction, and when the first antenna radiator and the second antenna radiator are arranged at intervals along the first target direction, the at least one first grounding point and the at least one second grounding point are respectively positioned at two sides of the first feed point along the second target direction; when the first antenna radiator and the second antenna radiator are arranged at intervals along the second target direction, the at least one first grounding point and the at least one second grounding point are respectively positioned at two sides of the first feeding point along the first target direction.

On the other hand, the application also provides an antenna device, which comprises a second radiation group and the antenna assembly, wherein the second radiation group and the first radiation group are arranged at intervals along the first target direction or the second target direction, the second radiation group comprises a third antenna radiator, and the third antenna radiator is used for being electrically connected with the radio frequency signal source.

In still another aspect, the application further provides an electronic device, including a device body and the antenna device, where the device body is used to carry the antenna device.

The antenna assembly comprises a first radiation group, wherein the first radiation group comprises first antenna radiators and second antenna radiators which are distributed and coupled at intervals along a first target direction or a second target direction, at least one first grounding point of the first antenna radiator, which is used for being electrically connected with a reference ground, and at least one second grounding point of the second antenna radiator, which is used for being electrically connected with the reference ground, are positioned on two sides of a first feeding point of the first radiation group, which is used for being electrically connected with radio frequency signals, so that the direction of current excited by the first antenna radiator on one side close to a first coupling gap is the same as the direction of current excited by the second antenna radiator on one side close to the first coupling gap, the magnetic symmetry of the first coupling gap and the circumference side of the first coupling gap is improved, cross polarization of the first radiation group is reduced, convergence of a phase difference curve of the antenna device is improved, and further accuracy of measuring an arrival angle is improved. The antenna device and the electronic equipment provided by the application comprise the antenna assembly, so that high-precision angle measurement can be realized.

Drawings

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

Fig. 1 is a schematic diagram of a dual-receiving antenna angle measurement structure in the related art;

fig. 2 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

FIG. 3 is an exploded view of the electronic device of FIG. 2;

fig. 4 is a schematic plan view of the electronic device shown in fig. 2, including a device body and an antenna device;

fig. 5 is a schematic structural diagram of an antenna device according to an embodiment of the present application, where the antenna device includes a first radiation group and a second radiation group, and first antenna radiators and second antenna radiators of the first radiation group are arranged at intervals along a second target direction;

fig. 6 is a schematic structural diagram of another antenna device according to an embodiment of the present application, where the antenna device includes a first radiation group and a second radiation group, and first antenna radiators and second antenna radiators of the first radiation group are arranged at intervals along a first target direction;

fig. 7 is a schematic structural diagram of the antenna device shown in fig. 5, in which the second radiation group includes a third antenna radiator, and the third antenna radiator includes a second feeding point and at least one third grounding element;

Fig. 8 is a schematic diagram illustrating a current distribution of a first radiation group in the antenna device shown in fig. 5;

fig. 9 is a schematic structural diagram of the antenna device shown in fig. 6, in which the first ground point is located at a first edge of the first antenna radiator, and the second ground point is located at a fourth edge of the second antenna radiator;

fig. 10 is a schematic structural diagram of the antenna device shown in fig. 6, in which the first grounding point is located at the second edge of the first antenna radiator, and the second grounding point is located at the third edge of the second antenna radiator;

fig. 11 is a schematic structural view of the antenna device shown in fig. 5, in which the first grounding point is located at the fifth edge of the first antenna radiator, and the second grounding point is located at the eighth edge of the second antenna radiator;

fig. 12 is a schematic structural diagram of the antenna device shown in fig. 5, in which the first grounding point is located at the sixth edge of the first antenna radiator, and the second grounding point is located at the seventh edge of the second antenna radiator;

fig. 13 is a schematic structural view of the antenna device shown in fig. 9 further including a first feeder line, and an orthographic projection of the first feeder line on a plane of the first antenna radiator extends from a first feeding point toward a first edge;

fig. 14 is a schematic structural view of the antenna device shown in fig. 9, further including a first feeder line, and an orthographic projection of the first feeder line on a surface of the first antenna radiator extends from a first feeding point toward a second edge;

Fig. 15 is a schematic structural view of the antenna device shown in fig. 9 further including a first feeder line, and an orthographic projection of the first feeder line on a surface of the first antenna radiator extends from a first feeding point along a first target direction;

fig. 16 is a schematic structural view of the antenna device shown in fig. 11 further including a second feeder line, and an orthographic projection of the second feeder line on a plane of the first antenna radiator extends from the first feeding point toward the fifth edge;

fig. 17 is a schematic structural view of the antenna device shown in fig. 11 further including a second feeder line, and an orthographic projection of the second feeder line on a plane of the first antenna radiator extends from the first feeding point toward the sixth edge;

fig. 18 is a schematic structural view of the antenna device shown in fig. 11 further including a second feeder line, and an orthographic projection of the second feeder line on a plane of the first antenna radiator extends from the first feeding point along a second target direction;

fig. 19 is a schematic structural view of the antenna device shown in fig. 13, in which the second antenna radiator and the first antenna radiator are disposed in a staggered manner;

fig. 20 is a schematic structural diagram of a second antenna radiator and a first antenna radiator of the antenna device shown in fig. 16, which are arranged in a staggered manner;

fig. 21 is a schematic structural view of the second radiation group of the antenna device shown in fig. 20, further including a fourth antenna radiator, where the fourth antenna radiator and the third antenna radiator are arranged at intervals along the second target direction;

Fig. 22 is a schematic structural diagram of the second radiation group of the antenna device shown in fig. 20, further including a fourth antenna radiator, where the fourth antenna radiator and the third antenna radiator are arranged at intervals along the first target direction;

fig. 23 is a schematic structural view of the antenna device shown in fig. 22, in which a third ground point is located at a ninth edge of the third antenna radiator, and a fourth ground point is located at a twelfth edge of the fourth antenna radiator;

fig. 24 is a schematic structural view of the antenna device shown in fig. 22, in which a third ground point is located at a tenth edge of the third antenna radiator, and a fourth ground point is located at an eleventh edge of the fourth antenna radiator;

fig. 25 is a schematic structural view of the antenna device shown in fig. 21, in which a third ground point is located at a thirteenth edge of the third antenna radiator, and a fourth ground point is located at a sixteenth edge of the fourth antenna radiator;

fig. 26 is a schematic structural diagram showing that a third grounding point is located at a fourteenth edge of a third antenna radiator and a fourth grounding point is located at a fifteenth edge of a fourth antenna radiator in the antenna device shown in fig. 21;

fig. 27 is a schematic structural view of the antenna device shown in fig. 23 further including a third feeder line, and an orthographic projection of the third feeder line on a plane of the third antenna radiator extends from the second feeding point toward the ninth edge;

Fig. 28 is a schematic structural view of the antenna device shown in fig. 23 further including a third feeder line, and an orthographic projection of the third feeder line on a plane of the third antenna radiator extends from the second feeding point toward the tenth edge;

fig. 29 is a schematic structural view showing the antenna device shown in fig. 25 further including a fourth feeder line, and an orthographic projection of the fourth feeder line on a plane of the third antenna radiator extends from the second feeding point toward the thirteenth edge;

fig. 30 is a schematic structural view of the antenna device shown in fig. 25 further including a fourth feeder line, and an orthographic projection of the fourth feeder line on a plane of the third antenna radiator extends from the second feeding point toward the fourteenth edge;

fig. 31 is a schematic structural view of the antenna device shown in fig. 27, in which the fourth antenna radiator and the third antenna radiator are disposed in a staggered manner;

fig. 32 is a schematic structural diagram of a fourth antenna radiator and a third antenna radiator of the antenna device shown in fig. 29, which are arranged in a staggered manner;

fig. 33 is a schematic diagram illustrating comparison of return loss curves of an antenna device and a conventional PIFA antenna according to an embodiment of the present disclosure;

fig. 34 is a schematic diagram illustrating comparison of radiation efficiency curves of an antenna device and a conventional PIFA antenna according to an embodiment of the present application;

fig. 35 is a diagram of a conventional PIFA antenna;

Fig. 36 is a directional diagram of an antenna device according to an embodiment of the present disclosure;

fig. 37 is a schematic diagram illustrating comparison of polarization ratio directions of an antenna device and a conventional PIFA antenna according to an embodiment of the present application;

fig. 38 is a schematic diagram illustrating comparison of polarization ratio of an antenna device and a conventional PIFA antenna according to an embodiment of the present application;

fig. 39 is a schematic structural diagram of the antenna device shown in fig. 30, further including a third radiation group, the third radiation group and the first radiation group are arranged along the second target direction, and a fifth antenna radiator of the third radiation group is a patch antenna radiator;

fig. 40 is a schematic structural diagram of the antenna device shown in fig. 30, further including a third radiation group, the third radiation group and the first radiation group are arranged along the second target direction, and a fifth antenna radiator of the third radiation group is a PIFA antenna radiator;

fig. 41 is a schematic structural view of the antenna device shown in fig. 30, further including a third radiation group, the third radiation group and the first radiation group are arranged along the second target direction, and the third radiation group includes a fifth antenna radiator and a seventh antenna radiator which are coupled to each other;

fig. 42 is a schematic structural diagram of an antenna device provided in an embodiment of the present application, where the antenna device includes a first radiation group, a second radiation group, and a fourth radiation group, and the second radiation group and the first radiation group are arranged along a second target direction, and the fourth radiation group and the first radiation group are arranged along a first target direction, and a sixth antenna radiator of the fourth radiation group is a patch antenna radiator;

Fig. 43 is a schematic structural diagram of an antenna device provided in an embodiment of the present application, where the antenna device includes a first radiation group, a second radiation group, and a fourth radiation group, and the second radiation group and the first radiation group are arranged along a second target direction, and the fourth radiation group and the first radiation group are arranged along a first target direction, and a sixth antenna radiator of the fourth radiation group is a PIFA antenna radiator;

fig. 44 is a schematic structural diagram of an antenna device provided in this embodiment of the present application, where the antenna device includes a first radiation group, a second radiation group, and a fourth radiation group, and the second radiation group and the first radiation group are arranged along a second target direction, and the fourth radiation group and the first radiation group are arranged along a first target direction, and the fourth radiation group includes a sixth antenna radiator and an eighth antenna radiator that are coupled to each other.

Detailed Description

As shown in fig. 1, fig. 1 is a schematic diagram of a dual-receiving antenna angle measurement structure in the related art. The specific principle of realizing angle measurement by the double receiving antennas is as follows: the paths of the electromagnetic wave signals in different directions reaching the two receiving antennas are different, and extra path difference is introduced, so that extra time difference is introduced, the extra time difference corresponds to extra phase difference, and angle measurement is realized through the relation between the phase difference of the electromagnetic wave signals received by the two receiving antennas and the arrival angle. In fig. 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 an antenna is the Phase Difference of the dot product of the electric fields of the transmitting antenna and the receiving antenna, and the expression is as follows:

r ₁ -r ₂ ＝d sinθ

wherein R is _n For representing the product of the cross polarization ratio of the transmit antenna and the receive antenna; epsilon is used to represent the dielectric constant; alpha ₂ -α ₁ For representing the phase difference of the feeds of the two receiving antennas; for representing the consistency of the phase patterns of the two receiving antennas; />For representing the transmit antenna phase pattern.

Factors affecting PDOA can be seen more intuitively from the above expression: the polarization ratio of the transmitting antenna and the receiving antenna, the phase center distance of the receiving antenna, the phase direction diagram of the transmitting antenna, the medium environment where the antenna is positioned and the feed phase difference of the receiving antenna. In particular, in addition to the spatial phase difference, the non-uniformity of polarization may also introduce additional phase differences.

By theoretical derivation analysis, when R _n →infinity or R _n When 0, i.e. the transmit-receive antenna polarization is matched and has a high polarization ratio, the PDOA is mainly affected by the consistency of the receive antenna phase pattern (stable phase center). The more uniform the receiving antennas, the better the PDOA curve convergence. When polarization is mismatched, i.e. R ₁ →∞，R ₂ 0 or R ₂ →∞，R ₁ And 0, infinity.0 occurs, and the PDOA is uncertain. In general terms, the process is carried out,when the transmit and receive polarizations are matched, if the polarization purity is general, the PDOA is affected not only by the main polarization of the receiving antenna, but also by the cross polarization of the receiving antenna and the transmitting antenna. Therefore, the antenna device and the electronic equipment with the small cross polarization and high angle measurement precision are provided.

The technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings. It is apparent that the embodiments described herein are only some embodiments, not all embodiments. All other embodiments, which can be made by a person of ordinary skill in the art based on the embodiments provided herein without any inventive effort, are within the scope of the present application.

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

The terms first, second and the like in the description and in the claims of the present application and in the above-described figures, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

Fig. 2 is a schematic structural diagram of an electronic device 100 according to an embodiment of the present application. The electronic device 100 may be a device having a wireless communication function, such as a mobile phone, a tablet computer, a notebook computer, a watch, an unmanned aerial vehicle, a robot, a base station, a radar, a customer premise equipment (Customer Premise Equipment, CPE), a vehicle-mounted device, or a home appliance. The embodiment of the application takes a mobile phone as an example.

Referring to fig. 2 and 3, the electronic device 100 includes a device body 2 and an antenna apparatus 1. The device body 2 may include a display 20, a housing 21 (a middle frame 210 and a rear cover 211), a circuit board 22, a camera module 23, and the like. The display screen 20 is interconnected with the housing 21. The circuit board 22 and the camera module 23 are positioned in the space between the display screen 20 and the housing 21. The apparatus body 2 is for carrying the antenna device 1. Specifically, the antenna device 1 may be directly carried on one or more components of the apparatus body 2 (e.g., the circuit board 22 or the housing 21), or may be carried on one or more components of the apparatus body 2 by other supporting structures. The antenna device 1 may be carried in the apparatus body 2 (i.e. in a space between the display 20 and the housing 21), or may be partially integrated in the housing 21 of the apparatus body 2. Wherein the housing 21 of the electronic device 100 may form a reference ground, or the ground layer of the circuit board 22 of the electronic device 100 may form a reference ground.

The antenna device 1 is used to realize a wireless communication function of the electronic apparatus 100. The antenna device 1 provided by the application is a UWB antenna device, i.e. an antenna device for short-range wireless communication. The transmission distance of the antenna device 1 can be within 10m, and a bandwidth of 1GHz or more is used. Because UWB does not adopt carrier wave, but utilizes non-sinusoidal narrow pulse transmission data of nanosecond to microsecond level, therefore UWB antenna device occupy the spectral range very wide, is applicable to high-speed, closely wireless personal communication. The FCC specifies that the UWB operating frequency range is from 3.1GHz to 10.6GHz, with a minimum operating frequency of 500MHz. The center frequencies of the UWB frequency bands of the current mainstream are 6.5GHz and 8GHz. It can be appreciated that the operating frequency range of the antenna apparatus 1 provided in the present application may be between 3.1GHz and 10.6GHz, the minimum operating frequency bandwidth may be 500MHz, and the center frequency of the antenna apparatus 1 may include 6.5GHz or 8GHz. In the following embodiments, the center frequency of the antenna device 1 is exemplified to include 8GHz.

As shown in fig. 4, the antenna device 1 comprises an antenna assembly and a second radiation group 12. The antenna assembly comprises a first radiation group 11. The antenna device 1 may further comprise a dielectric layer 10. The first radiation set 11 and the second radiation set 12 may be provided on a surface of the dielectric layer 10. The first radiation group 11 and the second radiation group 12 are arranged at intervals along the first target direction or the second target direction. The first target direction may refer to the X-axis direction in fig. 4, and the second target direction may refer to the Y-axis direction in fig. 4, which will be directly described as the first target direction X and the second target direction Y in the following embodiments. The first target direction X intersects the second target direction Y. Alternatively, the included angle between the first target direction X and the second target direction Y may be 30 °, 45 °, 60 °, 90 °, and so on. In the embodiment of the present application, the first target direction X is perpendicular to the second target direction Y, for example, unless otherwise specified. Of course, in other embodiments, the first target direction X and the second target direction Y may intersect but not be perpendicular. The first target direction X may be a width direction of the electronic device 100, and the second target direction Y may be a length direction of the electronic device 100; alternatively, the first target direction X may be a length direction of the electronic device 100, and the second target direction Y may be a width direction of the electronic device 100. In the following embodiments, the first target direction X is taken as a width direction of the electronic device 100, and the second target direction Y is taken as a length direction of the electronic device 100 as an example. When the first radiation group 11 and the second radiation group 12 are arranged at intervals along the first target direction X, it can be understood that the first radiation group 11 and the second radiation group 12 form a horizontal goniometer antenna group, which can be used to measure an azimuth angle in an arrival angle of an electromagnetic wave signal. When the first radiation group 11 and the second radiation group 12 are arranged at intervals along the second target direction Y, it can be understood that the first radiation group 11 and the second radiation group 12 form a vertical angle-measuring antenna group, which can be used to measure a pitch angle in an arrival angle of an electromagnetic wave signal. In the following embodiments, the first radiation group 11 and the second radiation group 12 are arranged at intervals along the first target direction X, for example, unless explicitly stated otherwise. Of course, in other embodiments, the first radiation group 11 and the second radiation group 12 may be arranged at intervals along the second target direction Y.

As shown in fig. 5, fig. 5 is a schematic structural diagram of an antenna device 1 according to an embodiment of the present application. The first radiation group 11 of the antenna arrangement 1 comprises a first antenna radiator 110 and at least one second antenna radiator 112. The number of the second antenna radiators 112 is not particularly limited in this application, and one second antenna radiator 112 is taken as an example in the following embodiments. The first radiation group 11 is used to generate quarter-wavelength resonance modes. The second radiating group 12 includes a third antenna radiator 120. The second radiation group 12 is used to generate quarter wavelength resonance modes.

Specifically, the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the first target direction X or the second target direction Y. The direction of the interval arrangement between the first antenna radiator 110 and the second antenna radiator 112 is not directly related to the direction of the interval arrangement between the first radiation group 11 and the second radiation group 12. In other words, when the first and second radiation groups 11 and 12 are spaced apart in the first target direction X, the first and second antenna radiators 110 and 112 may be spaced apart in the first target direction X, or the first and second antenna radiators 110 and 112 may be spaced apart in the second target direction Y. The material of the first antenna radiator 110 and the material of the second antenna radiator 112 are conductive materials. For example: the material of the first antenna radiator 110 and the material of the second antenna radiator 112 may be metal, alloy, or the like.

In one embodiment, as shown in fig. 5, the first radiation group 11 and the second radiation group 12 are arranged at intervals along the first target direction X, and the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the second target direction Y. Wherein a spacing between the first radiation group 11 and the second radiation group 12 in the first target direction X may be greater than or equal to a spacing between the first antenna radiator 110 and the second antenna radiator 112 in the second target direction Y. In this embodiment, the antenna apparatus 1 realizes two-dimensional angle measurement, and simultaneously, by arranging the first radiation group 11 and the second radiation group 12 at intervals along the first target direction X, and arranging the first antenna radiator 110 and the second antenna radiator 112 at intervals along the second target direction Y, the size of the antenna apparatus 1 along the first target direction X can be reduced, which is beneficial to arranging the antenna apparatus 1 in the electronic device 100 with smaller width, and to reducing the width of the electronic device 100.

In another embodiment, as shown in fig. 6, the first radiation group 11 and the second radiation group 12 are arranged at intervals along the first target direction X, and the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the first target direction X. Wherein a spacing between the first radiation group 11 and the second radiation group 12 in the first target direction X may be greater than or equal to a spacing between the first antenna radiator 110 and the second antenna radiator 112 in the first target direction X. In this embodiment, the antenna apparatus 1 realizes two-dimensional angle measurement, and simultaneously, by arranging the first radiation group 11 and the second radiation group 12 at intervals along the first target direction X, and arranging the first antenna radiator 110 and the second antenna radiator 112 at intervals along the first target direction X, the size of the antenna apparatus 1 along the second target direction Y can be reduced, which is beneficial to arranging the antenna apparatus 1 in the electronic device 100 with a smaller length, and reducing the length of the electronic device 100.

Wherein the first antenna radiator 110 is coupled with the second antenna radiator 112 and forms a first coupling gap. Specifically, in an embodiment in which the first antenna radiator 110 and the second antenna radiator 112 are spaced apart along the second target direction Y, the first coupling gap may refer to L1 in fig. 5. In an embodiment in which the first antenna radiator 110 and the second antenna radiator 112 are spaced apart in the first target direction X, the first coupling gap may refer to L2 in fig. 6. The first coupling gap is greater than or equal to 0.2mm and less than or equal to 1.5mm. The smaller the first coupling gap, the stronger the magnetic flow of the first radiation group 11 in the first coupling gap, and the smaller the cross polarization of the first radiation group 11. When the first coupling gap is smaller than 0.2mm or larger than 1.5mm, the first radiation group 11 generates cross polarization, which makes it difficult to improve the angular accuracy of the antenna device 1.

One of the first antenna radiator 110 and the second antenna radiator 112 includes a first feeding point 11a, and the first feeding point 11a is used for electrically connecting to a radio frequency signal source. It will be appreciated that the first feed point 11a may be located on the first antenna radiator 110 or the first feed point 11a may be located on the second antenna radiator 112. The first feeding point 11a and the radio frequency signal source may be electrically connected through a microstrip line, a coaxial line, a probe, a spring plate, etc.

The first antenna radiator 110 comprises at least one first ground point 110a, the first ground point 110a being for electrically connecting to a reference ground. The number of the first grounding points 110a is not particularly limited in this application. For example, the number of the first grounding points 110a may be one, two, three, five, eight, ten, etc., and when the number of the first grounding points 110a is plural, the plurality of first grounding points 110a may be sequentially arranged in a specific direction. Optionally, at least one first ground point 110a is electrically connected to the housing 21 of the electronic device 100; alternatively, the at least one first ground point 110a is electrically connected to a ground layer of the circuit board 22 of the electronic device 100; alternatively, the back surface of the dielectric layer 10 may be provided with a ground metal electrically connected to the housing 21 of the electronic device 100 or to the ground layer of the circuit board 22 of the electronic device 100, and the plurality of first ground points 110a may be electrically connected to the ground metal to realize electrical connection to the reference ground. The at least one first grounding point 110a and the reference ground may be electrically connected through a microstrip line, a coaxial line, a probe, a spring, etc.

The second antenna radiator 112 comprises at least one second ground point 112a, the second ground point 112a being for electrically connecting to a reference ground. The number of the second grounding points 112a is not particularly limited in this application. For example, the number of the second grounding points 112a may be one, two, three, five, eight, ten, etc., and when the number of the second grounding points 112a is plural, the plurality of the second grounding points 112a may be sequentially arranged along a specific direction. The number of second ground points 112a may be the same as or different from the number of first ground points 110 a. Optionally, at least one second ground point 112a is electrically connected to the housing 21 of the electronic device 100; alternatively, the at least one second ground point 112a is electrically connected to a ground layer of the circuit board 22 of the electronic device 100; alternatively, the back surface of the dielectric layer 10 may be provided with a ground metal electrically connected to the housing 21 of the electronic device 100 or to the ground layer of the circuit board 22 of the electronic device 100, and the plurality of second ground points 112a may be electrically connected to the ground metal to achieve electrical connection to the reference ground. The at least one second ground point 112a and the reference ground may be electrically connected by a microstrip line, a coaxial line, a probe, a spring, etc.

Wherein the first antenna radiator 110 may be understood as a Planar Inverted F (PIFA) antenna radiator when the first feeding point 11a is located at the first antenna radiator 110. When the first feeding point 11a is located at the second antenna radiator 112, the second antenna radiator 112 may be understood as a planar inverted-F antenna radiator. In the embodiment of the present application, the first antenna radiator 110 includes the first feeding point 11a as an example. It will be appreciated that since the first feeding point 11a is electrically connected to a radio frequency signal source, the first antenna radiator 110 may directly acquire a radio frequency signal from the radio frequency signal source to realize feeding. And the second antenna radiator 112 is coupled with the first antenna radiator 110, so that the second antenna radiator 112 can acquire a radio frequency signal from the first antenna radiator 110 to realize feeding.

In one embodiment, as shown in fig. 5, when the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the second target direction Y, at least one first grounding point 110a and at least one second grounding point 112a are respectively located at two sides of the first feeding point 11a along the first target direction X. In other words, when the first and second antenna radiators 110 and 112 are spaced apart in the second target direction Y, the at least one first ground point 110a, the first feeding point 11a, and the at least one second ground point 112a are sequentially arranged in the first target direction X. When the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the second target direction Y, the at least one first grounding point 110a and the at least one second grounding point 112a are respectively located at two sides of the first feeding point 11a along the first target direction X, so that the direction of the current excited by the first antenna radiator 110 at the side close to the first coupling gap L1 is the same as the direction of the current excited by the second antenna radiator 112 at the side close to the first coupling gap L1, and the magnetic symmetry of the first coupling gap L1 and the circumference side of the first coupling gap L1 is improved, and the cross polarization of the first radiation group 11 is reduced.

In another embodiment, as shown in fig. 6, when the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the first target direction X, at least one first grounding point 110a and at least one second grounding point 112a are respectively located at two sides of the first feeding point 11a along the second target direction Y. In other words, when the first and second antenna radiators 110 and 112 are arranged at intervals in the first target direction X, the at least one first ground point 110a, the first feeding point 11a, and the at least one second ground point 112a are sequentially arranged in the second target direction Y. When the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the first target direction X, the at least one first grounding point 110a and the at least one second grounding point 112a are respectively located at two sides of the first feeding point 11a along the second target direction Y, so that the direction of the current excited by the first antenna radiator 110 at the side close to the first coupling gap L2 is the same as the direction of the current excited by the second antenna radiator 112 at the side close to the first coupling gap L2, and the magnetic symmetry of the first coupling gap L2 and the circumference side of the first coupling gap L2 is improved, and the cross polarization of the first radiation group 11 is reduced.

The third antenna radiator 120 is made of conductive material. For example: the material of the third antenna radiator 120 may be metal, alloy, or the like. The third antenna radiator 120 is used for electrically connecting to a radio frequency signal source. The electrical connection between the third antenna radiator 120 and the rf signal source may include one or more of direct electrical connection, indirect electrical connection, and coupling connection. The third antenna radiator 120 may be a patch antenna radiator or a planar inverted-F antenna radiator.

In one embodiment, referring to fig. 5 and 6, the third antenna radiator 120 is a patch antenna radiator. The third antenna radiator 120 may be circular, elliptical, triangular, square, rectangular, other polygonal shapes, various special shapes, etc., and in this embodiment, the rectangular third antenna radiator 120 is taken as an example. The third antenna radiator 120 is not directly grounded, so that the cross polarization of the third antenna radiator 120 is smaller, and combined with the first radiation group 11, the cross polarization of the whole antenna device 1 is smaller, so that the convergence of the phase difference curve of the antenna device 1 is improved, and the accuracy of measuring the arrival angle is improved.

In another embodiment, as shown in fig. 7, the third antenna radiator 120 is a planar inverted-F antenna radiator. The third antenna radiator 120 comprises a second feed point 12a and at least one third ground point 120a. The second feeding point 12a is for electrically connecting to a radio frequency signal source. For example, the second feeding point 12a and the rf signal source may be electrically connected through a microstrip line, a coaxial line, a probe, a spring, etc. At least one third ground point 120a is used to electrically connect to a reference ground. The number of third ground points 120a is not particularly limited in this application. For example, the number of the third grounding points 120a may be one, two, three, five, eight, ten, etc., and when the number of the third grounding points 120a is plural, the plurality of third grounding points 120a may be sequentially arranged in a specific direction. Optionally, at least one third ground point 120a is electrically connected to the housing 21 of the electronic device 100; alternatively, at least one third grounding point 120a is electrically connected to the grounding layer of the circuit board 22 of the electronic device 100, or alternatively, the back surface of the dielectric layer 10 is provided with a grounding metal electrically connected to the housing 21 of the electronic device 100 or to the grounding layer of the circuit board 22 of the electronic device 100, and the plurality of third grounding points 120a may be electrically connected to the grounding metal to achieve electrical connection to the reference ground. The at least one third ground point 120a and the reference ground may be electrically connected by a microstrip line, a coaxial line, a probe, a spring, etc. In this embodiment, the third antenna radiator 120 has a small bandwidth and a small volume, which is beneficial to widening the bandwidth of the antenna device 1 and achieving miniaturization of the antenna device 1.

The antenna device 1 provided by the application comprises a first radiation group 11 and a second radiation group 12, wherein the first radiation group 11 and the second radiation group 12 are arranged at intervals along a first target direction X or a second target direction Y to form a two-dimensional angle measurement antenna group, so that the measurement of an arrival angle can be realized according to the phase difference of electromagnetic wave signals received by the first radiation group 11 and the second radiation group 12. The first radiating group 11 includes a first antenna radiator 110 and a second antenna radiator 112 which are arranged and coupled at intervals along the first target direction X or the second target direction Y, and a first coupling gap between the first antenna radiator 110 and the second antenna radiator 112 is greater than or equal to 0.2mm and less than or equal to 1.5mm, and at least one first grounding point 110a of the first antenna radiator 110 for electrically connecting to a reference ground and at least one second grounding point 112a of the second antenna radiator 112 for electrically connecting to the reference ground are located at two sides of a first feeding point 11a of the first radiating group 11 for electrically connecting to a radio frequency signal, as shown in fig. 8, so that a direction of a current excited by the first antenna radiator 110 at a side close to the first coupling gap is the same as a direction of a current excited by the second antenna radiator 112 at a side close to the first coupling gap, thereby improving magnetic current symmetry of the first coupling gap and a peripheral side of the first coupling gap, so as to reduce cross polarization of the first radiating group 11, improve convergence of the antenna device 1, and further facilitate measurement of a phase difference angle.

In addition, since the first radiation group 11 of the antenna device 1 includes the first antenna radiator 110 and the second antenna radiator 112, and the first antenna radiator 110 and the second antenna radiator 112 are coupled, that is, the first antenna radiator 110 and the second antenna radiator 112 of the antenna device 1 can be fed to perform electromagnetic radiation without adding a feeding structure, the bandwidth of the antenna device 1 can be widened, and the radiation efficiency of the antenna device 1 can be improved.

Alternatively, referring to fig. 9 and 10, when the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the first target direction X, the first antenna radiator 110 includes a first edge 1101 and a second edge 1102 that are disposed opposite to each other along the second target direction Y, at least one first ground point 110a is disposed on the first edge 1101 or the second edge 1102, the second antenna radiator 112 includes a third edge 1121 and a fourth edge 1122 that are disposed opposite to each other along the second target direction Y, and at least one second ground point 112a is disposed on the third edge 1121 or the fourth edge 1122. Wherein, when the first antenna radiator 110 includes the first feeding point 11a, the first feeding point 11a is located between the first edge 1101 and the second edge 1102. When the second antenna radiator 112 includes the first feeding point 11a, the first feeding point 11a is located between the third edge 1121 and the fourth edge 1122.

By providing at least one first ground point 110a on the first edge 1101 or the second edge 1102 of the first antenna radiator 110, the current flow path on the first antenna radiator 110 can be increased, the effective electrical length of the first antenna radiator 110 can be increased, the gain and efficiency of the first antenna radiator 110 can be improved, and by providing at least one second ground point 112a on the third edge 1121 or the fourth edge 1122 of the second antenna radiator 112, the current flow path on the second antenna radiator 112 can be increased, the effective electrical length of the second antenna radiator 112 can be increased, the gain and efficiency of the second antenna radiator 112 can be improved, the current excited by the first and second antenna radiators 110, 112 on the sides close to the first coupling gap can be increased, the cross polarization of the first radiation group 11 can be reduced, the convergence of the phase difference curve of the antenna device 1 can be improved, and a high-accuracy angle measurement can be realized.

In one embodiment, the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the first target direction X. The first antenna radiator 110 includes a first edge 1101 and a second edge 1102 that are oppositely disposed along the second target direction Y. The second antenna radiator 112 includes a third edge 1121 and a fourth edge 1122 oppositely disposed along the second target direction Y. Wherein the first edge 1101 is adjacent to the third edge 1121 and the second edge 1102 is adjacent to the fourth edge 1122. In this embodiment, the first edge 1101 being close to the third edge 1121 means that the distance between the first edge 1101 and the third edge 1121 along the second target direction Y is smaller than the distance between the first edge 1101 and the fourth edge 1122 along the second target direction Y; the second edge 1102 being close to the fourth edge 1122 means that the separation distance between the second edge 1102 and the fourth edge 1122 along the second target direction Y is smaller than the separation distance between the second edge 1102 and the third edge 1121 along the second target direction Y. For example, the first edge 1101, the third edge 1121, the second edge 1102, and the fourth edge 1122 may be sequentially arranged in the second target direction Y; alternatively, the first edge 1101, the third edge 1121, the fourth edge 1122, and the second edge 1102 may be sequentially arranged in the second target direction Y; alternatively, the third edge 1121, the first edge 1101, the second edge 1102, and the fourth edge 1122 may be sequentially arranged in the second target direction Y; further alternatively, the third edge 1121, the first edge 1101, the fourth edge 1122, and the second edge 1102 may be sequentially arranged in the second target direction Y. Of course, the first edge 1101 and the third edge 1121 may be disposed opposite to each other along the first target direction X, and in this case, the distance between the first edge 1101 and the third edge 1121 along the second target direction Y is zero, and the distance between the first edge 1101 and the fourth edge 1122 is the extension dimension of the second antenna radiator 112 along the second target direction Y; the second edge 1102 and the fourth edge 1122 may be disposed opposite to each other in the first target direction X, and the distance between the second edge 1102 and the fourth edge 1122 in the second target direction Y is zero, and the distance between the second edge 1102 and the third edge 1121 is the extension of the second antenna radiator 112 in the second target direction Y.

In one embodiment, as shown in fig. 9, the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the first target direction X, at least one first grounding point 110a is disposed on the first edge 1101, and at least one second grounding point 112a is disposed on the fourth edge 1122. By providing the at least one first ground point 110a on the first edge 1101 and providing the at least one second ground point 112a on the fourth edge 1122, the effective electrical lengths of the first and second antenna radiators 110, 112 are increased, the gain and efficiency of the first and second antenna radiators 110, 112 are improved, the at least one first ground point 110a and the at least one second ground point 112a are advantageously positioned on both sides of the first feed point 11a in the second target direction Y, respectively, so that the direction of the current excited by the first antenna radiator 110 on the side close to the first coupling gap is the same as the direction of the current excited by the second antenna radiator 112 on the side close to the first coupling gap, the magneto-rheological symmetry of the first coupling gap and the first coupling gap periphery is improved, and the cross polarization of the first radiation group 11 is reduced.

In another embodiment, as shown in fig. 10, the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the first target direction X, at least one first grounding point 110a is provided on the second edge 1102, and at least one second grounding point 112a is provided on the third edge 1121. By providing the at least one first grounding point 110a at the second edge 1102 and providing the at least one second grounding point 112a at the third edge 1121, the effective electrical lengths of the first and second antenna radiators 110, 112 are increased, the gains and the efficiencies of the first and second antenna radiators 110, 112 are improved, and the at least one first grounding point 110a and the at least one second grounding point 112a are advantageously located on both sides of the first feed point 11a in the second target direction Y, respectively, so that the direction of the current excited by the first antenna radiator 110 on the side close to the first coupling gap is the same as the direction of the current excited by the second antenna radiator 112 on the side close to the first coupling gap, the magneto-rheological symmetry of the first coupling gap and the side around the first coupling gap is improved, and the cross polarization of the first radiation group 11 is reduced.

Alternatively, referring to fig. 11 and 12, when the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the second target direction Y, the first antenna radiator 110 includes a fifth edge 1103 and a sixth edge 1104 that are disposed opposite to each other along the first target direction X, at least one first ground point 110a is disposed on the fifth edge 1103 or the sixth edge 1104, the second antenna radiator 112 includes a seventh edge 1123 and an eighth edge 1124 that are disposed opposite to each other along the first target direction X, and at least one second ground point 112a is disposed on the seventh edge 1123 or the eighth edge 1124. Wherein, when the first antenna radiator 110 includes the first feeding point 11a, the first feeding point 11a is located between the fifth edge 1103 and the sixth edge 1104. When the second antenna radiator 112 includes the first feeding point 11a, the first feeding point 11a is located between the seventh edge 1123 and the eighth edge 1124.

By having at least one first ground point 110a provided at the fifth edge 1103 or the sixth edge 1104 of the first antenna radiator 110, the flow path of the current over the first antenna radiator 110 can be increased, thereby increasing the effective electrical length of the first antenna radiator 110, increasing the gain and efficiency of the first antenna radiator 110, and by having at least one second ground point 112a provided at the seventh edge 1123 or the eighth edge 1124 of the second antenna radiator 112, the flow path of the current over the second antenna radiator 112 can be increased, thereby increasing the effective electrical length of the second antenna radiator 112, increasing the gain and efficiency of the second antenna radiator 112.

In one embodiment, the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the second target direction Y. The first antenna radiator 110 includes a fifth edge 1103 and a sixth edge 1104 that are oppositely disposed along the second target direction Y. The second antenna radiator 112 includes a seventh edge 1123 and an eighth edge 1124 disposed opposite along the second target direction Y. Wherein the fifth edge 1103 is adjacent to the seventh edge 1123 and the sixth edge 1104 is adjacent to the eighth edge 1124. In the present embodiment, the fifth edge 1103 being close to the seventh edge 1123 means that a distance between the fifth edge 1103 and the seventh edge 1123 along the first target direction X is smaller than a distance between the fifth edge 1103 and the eighth edge 1124 along the first target direction X; the sixth edge 1104 being adjacent to the eighth edge 1124 means that a separation distance between the sixth edge 1104 and the eighth edge 1124 along the first target direction X is less than a separation distance between the sixth edge 1104 and the seventh edge 1123 along the first target direction X. For example, the fifth edge 1103, the seventh edge 1123, the sixth edge 1104, and the eighth edge 1124 may be sequentially arranged in the first target direction X; alternatively, the fifth edge 1103, the seventh edge 1123, the eighth edge 1124, and the sixth edge 1104 may be arranged in order in the first target direction X; alternatively, the seventh edge 1123, the fifth edge 1103, the sixth edge 1104, and the eighth edge 1124 may be arranged in this order in the first target direction X; still alternatively, the seventh edge 1123, the fifth edge 1103, the eighth edge 1124, and the sixth edge 1104 may be arranged in this order in the first target direction X. Of course, the fifth edge 1103 and the seventh edge 1123 may be disposed opposite to each other along the second target direction Y, where the distance between the fifth edge 1103 and the seventh edge 1123 along the first target direction X is zero, and the distance between the fifth edge 1103 and the eighth edge 1124 is the extension dimension of the second antenna radiator 112 along the first target direction X; the sixth edge 1104 and the eighth edge 1124 may be disposed opposite to each other along the second target direction Y, where the distance between the sixth edge 1104 and the eighth edge 1124 along the first target direction X is zero, and the distance between the sixth edge 1104 and the seventh edge 1123 is the extension of the second antenna radiator 112 along the first target direction X.

In one embodiment, as shown in fig. 11, the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the second target direction Y, at least one first grounding point 110a is disposed on the fifth edge 1103, and at least one second grounding point 112a is disposed on the eighth edge 1124. By providing the at least one first ground point 110a at the fifth edge 1103 and providing the at least one second ground point 112a at the eighth edge 1124, the effective electrical lengths of the first and second antenna radiators 110, 112 are increased, the gains and the efficiencies of the first and second antenna radiators 110, 112 are improved, the at least one first ground point 110a and the at least one second ground point 112a are advantageously located on both sides of the first feed point 11a in the first target direction X, respectively, so that the direction of the current excited by the first antenna radiator 110 on the side close to the first coupling gap is the same as the direction of the current excited by the second antenna radiator 112 on the side close to the first coupling gap, the magneto-rheological symmetry of the first coupling gap and the side of the first coupling gap is improved, and the cross polarization of the first radiation group 11 is reduced.

In another embodiment, as shown in fig. 12, the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the second target direction Y, at least one first grounding point 110a is provided at the sixth edge 1104, and at least one second grounding point 112a is provided at the seventh edge 1123. By providing the at least one first ground point 110a at the sixth edge 1104 and providing the at least one second ground point 112a at the seventh edge 1123, the effective electrical lengths of the first and second antenna radiators 110, 112 are increased, the gains and the efficiencies of the first and second antenna radiators 110, 112 are improved, and the at least one first ground point 110a and the at least one second ground point 112a are advantageously located on both sides of the first feed point 11a in the first target direction X, respectively, so that the direction of the current excited by the first antenna radiator 110 on the side close to the first coupling gap is the same as the direction of the current excited by the second antenna radiator 112 on the side close to the first coupling gap, the first coupling gap and the magnetic flow symmetry on the side of the circumference of the first coupling gap are improved, and the cross polarization of the first radiation group 11 is reduced.

The dimension of the first antenna radiator 110 along the first target direction X may be greater than or equal to the dimension of the second antenna radiator 112 along the first target direction X, and the dimension of the first antenna radiator 110 along the second target direction Y may be greater than or equal to the dimension of the second antenna radiator 112 along the second target direction Y. The first feeding point 11a may be provided to the first antenna radiator 110. By providing the first feeding point 11a to the first antenna radiator 110 having a large size, the feeding efficiency of the antenna device 1 can be improved. In the present embodiment, the first antenna radiator 110 is used as the main radiator of the first radiation group 11, and the second antenna radiator 112 is used as the parasitic radiator of the first antenna radiator 110, so that cross polarization of the first radiation group 11 can be reduced, and miniaturization of the antenna device 1 can be achieved. In addition, by providing the second antenna radiator 112, the size of the first antenna radiator 110 in the first target direction X can be reduced while achieving the same or similar radiation effects, thereby reducing the cross polarization of the first antenna radiator 110 itself and improving the angular accuracy of the antenna device 1.

Alternatively, referring to fig. 13 and 14, when the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the first target direction X, the first feeding point 11a is located between the first edge 1101 and the second edge 1102. The antenna arrangement 1 further comprises a first feed line 15. One end of the first feeder line 15 is electrically connected to the first feeding point 11a, and the other end of the first feeder line 15 is electrically connected to a radio frequency signal source. The orthographic projection of the first feeder line 15 on the plane of the first antenna radiator 110 extends from the first feeding point 11a toward the first edge 1101, or the orthographic projection of the first feeder line 15 on the plane of the first antenna radiator 110 extends from the first feeding point 11a toward the second edge 1102. The first feeder line 15 may be disposed on the same surface of the dielectric layer 10 as the first antenna radiator 110, or may be disposed on the front surface and the back surface of the dielectric layer 10, respectively. When the first feeder line 15 and the first antenna radiator 110 are disposed on the front and back sides of the dielectric layer 10, respectively, one end of the first feeder line 15 may be electrically connected to the first feeding point 11a through the conductive via.

In an embodiment, as shown in fig. 13, when the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the first target direction X, the first feeding point 11a is located between the first edge 1101 and the second edge 1102, one end of the first feeder line 15 is electrically connected to the first feeding point 11a, the other end of the first feeder line 15 is electrically connected to the radio frequency signal source, and the orthographic projection of the first feeder line 15 on the surface of the first antenna radiator 110 extends from the first feeding point 11a toward the first edge 1101.

In another embodiment, as shown in fig. 14, when the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the first target direction X, the first feeding point 11a is located between the first edge 1101 and the second edge 1102, one end of the first feeder line 15 is electrically connected to the first feeding point 11a, the other end of the first feeder line 15 is electrically connected to the radio frequency signal source, and the orthographic projection of the first feeder line 15 on the surface of the first antenna radiator 110 extends from the first feeding point 11a toward the second edge 1102.

By extending the orthographic projection of the first feeder line 15 on the plane of the first antenna radiator 110 from the first feeding point 11a toward the first edge 1101, or extending the orthographic projection of the first feeder line 15 on the plane of the first antenna radiator 110 from the first feeding point 11a toward the second edge 1102, the current of the first antenna radiator 110 on the edge along the first target direction X can be reduced, the cross polarization of the first antenna radiator 110 itself can be reduced, and the angular accuracy of the antenna device 1 can be improved.

Of course, in other embodiments, as shown in fig. 15, when the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the first target direction X, the orthographic projection of the first feeder line 15 on the surface of the first antenna radiator 110 may also extend from the first feeding point 11a toward the edge side of the first antenna radiator 110 along the first target direction X.

Specifically, when the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the first target direction X, the first feeding point 11a is located between the first edge 1101 and the second edge 1102, the antenna device further includes a first feeder line 15, one end of the first feeder line 15 is electrically connected to the first feeding point 11a, the other end of the first feeder line 15 is electrically connected to the radio frequency signal source, the orthographic projection of the first feeder line 15 on the surface of the first antenna radiator 110 extends from the first feeding point 11a toward the third edge 1121, or the orthographic projection of the first feeder line 15 on the surface of the first antenna radiator 110 extends from the first feeding point toward the fourth edge 1122.

Alternatively, referring to fig. 16 and 17, when the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the second target direction Y, the first feeding point 11a is located between the fifth edge 1103 and the sixth edge 1104. The antenna arrangement 1 further comprises a second feed line 16. One end of the second feeder line 16 is electrically connected to the first feeding point 11a, and the other end of the second feeder line 16 is electrically connected to a radio frequency signal source. The orthographic projection of the second feeder line 16 on the plane of the first antenna radiator 110 extends from the first feeding point 11a toward the fifth edge 1103, or the orthographic projection of the first feeder line 15 on the plane of the first antenna radiator 110 extends from the first feeding point 11a toward the sixth edge 1104.

In an embodiment, as shown in fig. 16, when the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the second target direction Y, the first feeding point 11a is located between the fifth edge 1103 and the sixth edge 1104, one end of the second feeder line 16 is electrically connected to the first feeding point 11a, the other end of the second feeder line 16 is electrically connected to the radio frequency signal source, and the orthographic projection of the second feeder line 16 on the surface of the first antenna radiator 110 extends from the first feeding point 11a toward the fifth edge 1103.

In another embodiment, as shown in fig. 17, when the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the second target direction Y, the first feeding point 11a is located between the fifth edge 1103 and the sixth edge 1104, one end of the second feeder line 16 is electrically connected to the first feeding point 11a, the other end of the first feeder line 15 is electrically connected to the radio frequency signal source, and the orthographic projection of the second feeder line 16 on the surface of the first antenna radiator 110 extends from the first feeding point 11a toward the sixth edge 1104.

By extending the orthographic projection of the first feeder line 15 on the plane of the first antenna radiator 110 from the first feeding point 11a toward the fifth edge 1103, or extending the orthographic projection of the first feeder line 15 on the plane of the first antenna radiator 110 from the first feeding point 11a toward the sixth edge 1104, the current of the first antenna radiator 110 on the edge in the second target direction Y can be reduced, the cross polarization of the first antenna radiator 110 itself can be reduced, and the angular accuracy of the antenna device 1 can be improved.

Of course, in other embodiments, as shown in fig. 18, when the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the second target direction Y, the orthographic projection of the second feeder line 16 on the plane of the first antenna radiator 110 may also extend from the first feeding point 11a toward the edge of the first antenna radiator 110 along the second target direction Y.

When the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the second target direction Y, the first feeding point 11a is located between the fifth edge 1103 and the sixth edge 1104, the antenna apparatus 1 further includes a second feeding line 16, one end of the second feeding line 16 is electrically connected to the first feeding point 11a, the other end of the second feeding line 16 is electrically connected to a radio frequency signal source, the orthographic projection of the second feeding line 16 on the surface of the first antenna radiator 110 extends from the first feeding point 11a toward the seventh edge 1123, or the orthographic projection of the second feeding line on the surface of the first antenna radiator 110 extends from the first feeding point 11a toward the eighth edge 1124.

Of course, in other embodiments, the antenna device 1 may also comprise a ground plane and a feed. The ground layer is stacked with the first radiation group, one end of the feeding piece is electrically connected with the first feeding point 11a, and the other end of the feeding piece penetrates through the ground layer to be electrically connected with a radio frequency signal source.

As shown in fig. 19, when the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the first target direction X, the first antenna radiator 110 and the second antenna radiator 112 may be disposed offset in the second target direction Y. It can be appreciated that when the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the first target direction X, the center line of the first antenna radiator 110 along the second target direction Y does not coincide with the center line of the second antenna radiator 112 along the second target direction Y. The offset distance between the first antenna radiator 110 and the second antenna radiator 112 in the second target direction Y may refer to P1 in fig. 19.

When the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the first target direction X, a misalignment distance between the first antenna radiator 110 and the second antenna radiator 112 along the second target direction Y is less than or equal to one fourth of an extension dimension of the first antenna radiator 110 along the second target direction Y. It is understood that P1 is less than or equal to one-fourth the extension of the first antenna radiator 110 in the second target direction Y.

The present embodiment is advantageous in that, when the first radiation group 11 and the second radiation group 12 are arranged along the second target direction Y, the second antenna radiator 112 is close to the second radiation group 12 along the second target direction Y, so as to improve the compactness of the arrangement of the antenna device 1, reduce the volume of the antenna device 1, and facilitate miniaturization of the antenna device 1. In addition, by arranging the first antenna radiator 110 and the second antenna radiator 112 in a staggered manner in the second target direction Y, the pattern deflection of the first radiation group 11 can be reduced, the deviation angle between the main beam and the normal direction of the first radiation group 11 can be reduced, and the beam width of the first radiation group 11 on the E plane can be improved.

As shown in fig. 20, when the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the second target direction Y, the first antenna radiator 110 and the second antenna radiator 112 may be disposed offset in the first target direction X. It can be appreciated that when the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the second target direction Y, the center line of the first antenna radiator 110 along the first target direction X does not coincide with the center line of the second antenna radiator 112 along the first target direction X. The offset distance between the first antenna radiator 110 and the second antenna radiator 112 in the first target direction X may refer to P2 in fig. 20.

When the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the second target direction Y, a misalignment distance between the first antenna radiator 110 and the second antenna radiator 112 along the first target direction X is less than or equal to one fourth of an extension dimension of the first antenna radiator 110 along the first target direction X. It is appreciated that P2 is less than or equal to one-fourth the extension of the first antenna radiator 110 in the second target direction Y.

The present embodiment is advantageous in that, when the first radiation group 11 and the second radiation group 12 are arranged along the first target direction X, the second antenna radiator 112 is close to the second radiation group 12 along the first target direction X, so as to improve the compactness of the arrangement of the antenna device 1, reduce the volume of the antenna device 1, and facilitate miniaturization of the antenna device 1. In addition, by arranging the first antenna radiator 110 and the second antenna radiator 112 in a staggered manner in the first target direction X, the pattern deflection of the first radiation group 11 can be reduced, the deviation angle between the main beam and the normal direction of the first radiation group 11 can be reduced, and the beam width of the first radiation group 11 on the E plane can be improved.

Further, referring to fig. 21 and 22, the second radiation group 12 further includes fourth antenna radiators 121 spaced apart from the third antenna radiator 120 along the first target direction X or the second target direction Y. The direction of the spacing between the third antenna radiator 120 and the fourth antenna radiator 121 is independent of the direction of the spacing between the first antenna radiator 110 and the second antenna radiator 112. In other words, when the first and second antenna radiators 110 and 112 are spaced apart in the first target direction X, the third and fourth antenna radiators 120 and 121 may be spaced apart in the first target direction X, or the third and fourth antenna radiators 120 and 121 may be spaced apart in the second target direction Y; when the first and second antenna radiators 110 and 112 are spaced apart in the second target direction Y, the third and fourth antenna radiators 120 and 121 may be spaced apart in the first target direction X, or the third and fourth antenna radiators 120 and 121 may be spaced apart in the second target direction Y. The third antenna radiator 120 and the fourth antenna radiator 121 are made of conductive materials. For example: the material of the third antenna radiator 120 and the material of the fourth antenna radiator 121 may be metal, alloy, or the like.

In one embodiment, as shown in fig. 21, the first radiation group 11 and the second radiation group 12 are arranged at intervals along the first target direction X, the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the second target direction Y, and the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the second target direction Y.

In another embodiment, as shown in fig. 22, the first radiation group 11 and the second radiation group 12 are arranged at intervals along the first target direction X, the first antenna radiator 110 and the second antenna radiator 112 are arranged at intervals along the second target direction Y, and the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the first target direction X.

The fourth antenna radiator 121 is coupled with the third antenna radiator 120 and forms a second coupling gap. Specifically, in an embodiment in which the fourth antenna radiator 121 and the third antenna radiator 120 are spaced apart in the second target direction Y, the second coupling gap may refer to L3 in fig. 21. In an embodiment in which the fourth antenna radiator 121 and the third antenna radiator 120 are spaced apart in the first target direction X, the second coupling gap may refer to L4 in fig. 22. The second coupling gap is greater than or equal to 0.2mm and less than or equal to 1.5mm. The smaller the second coupling gap, the stronger the magnetic flow of the second radiation group 12 on the second coupling gap side, and the smaller the cross polarization of the second radiation group 12. When the second coupling gap is smaller than 0.2mm or the second coupling gap is larger than 1.5mm, the second radiation group 12 generates cross polarization, which makes it difficult to improve the angular accuracy of the antenna device 1.

One of the third antenna radiator 120 and the fourth antenna radiator 121 includes a second feeding point 12a, and the second feeding point 12a is used for electrically connecting to a radio frequency signal source. It will be appreciated that the second feed point 12a may be located on the third antenna radiator 120 or the second feed point 12a may be located on the fourth antenna radiator 121. The second feeding point 12a and the radio frequency signal source may be electrically connected through a microstrip line, a coaxial line, a probe, a spring plate, etc.

The third antenna radiator 120 comprises at least one third ground point 120a, the third ground point 120a being for electrically connecting to a reference ground. The number of third ground points 120a is not particularly limited in this application. For example, the number of the third grounding points 120a may be one, two, three, five, eight, ten, etc., and when the number of the third grounding points 120a is plural, the plurality of third grounding points 120a may be sequentially arranged in a specific direction. Optionally, the at least one third ground point 120a is electrically connected to the housing 21 of the electronic device 100, or the at least one third ground point 120a is electrically connected to a ground layer of the circuit board 22 of the electronic device 100. The at least one third ground point 120a and the reference ground may be electrically connected by a microstrip line, a coaxial line, a probe, a spring, etc.

The fourth antenna radiator 121 comprises at least one fourth ground point 121a, the fourth ground point 121a being for electrically connecting to a reference ground. The number of fourth ground points 121a is not particularly limited in this application. For example, the number of the fourth ground points 121a may be one, two, three, five, eight, ten, etc., and when the number of the fourth ground points 121a is plural, the plurality of the fourth ground points 121a may be sequentially arranged in a specific direction. The number of fourth ground points 121a may be the same as or different from the number of third ground points 120 a. Optionally, the at least one fourth ground point 121a is electrically connected to the housing 21 of the electronic device 100, or the at least one fourth ground point 121a is electrically connected to a ground layer of the circuit board 22 of the electronic device 100. The at least one fourth ground point 121a and the reference ground may be electrically connected by a microstrip line, a coaxial line, a probe, a spring, etc.

Wherein the third antenna radiator 120 may be understood as a planar inverted-F (PIFA) antenna radiator when the second feed point 12a is located at the third antenna radiator 120. When the second feeding point 12a is located at the fourth antenna radiator 121, the fourth antenna radiator 121 may be understood as a planar inverted-F antenna radiator. In the embodiment of the present application, the third antenna radiator 120 includes the second feeding point 12a as an example. It will be appreciated that since the second feeding point 12a is electrically connected to the rf signal source, the third antenna radiator 120 may directly acquire the rf signal from the rf signal source to realize feeding. And the fourth antenna radiator 121 is coupled with the third antenna radiator 120, so that the fourth antenna radiator 121 can acquire a radio frequency signal from the third antenna radiator 120 to realize feeding.

In one embodiment, as shown in fig. 21, when the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the second target direction Y, at least one third grounding point 120a and at least one fourth grounding point 121a are respectively located at two sides of the second feeding point 12a along the first target direction X. In other words, when the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals in the second target direction Y, at least one third ground point 120a, the second feeding point 12a, and at least one fourth ground point 121a are sequentially arranged in the first target direction X. When the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the second target direction Y, the at least one third grounding point 120a and the at least one fourth grounding point 121a are respectively located at two sides of the second feeding point 12a along the first target direction X, so that the direction of the current excited by the third antenna radiator 120 at the side close to the second coupling gap L3 is the same as the direction of the current excited by the fourth antenna radiator 121 at the side close to the second coupling gap L3, the magneto-rheological symmetry of the second coupling gap L3 and the periphery of the second coupling gap L3 is improved, and the cross polarization of the second radiation group 12 is reduced.

In another embodiment, as shown in fig. 22, when the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the first target direction X, at least one third grounding point 120a and at least one fourth grounding point 121a are respectively located at two sides of the second feeding point 12a along the second target direction Y. In other words, when the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals in the first target direction X, the at least one third ground point 120a, the second feeding point 12a, and the at least one fourth ground point 121a are sequentially arranged in the second target direction Y. When the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the first target direction X, the at least one third grounding point 120a and the at least one fourth grounding point 121a are respectively located at two sides of the second feeding point 12a along the second target direction Y, so that the direction of the current excited by the third antenna radiator 120 at the side close to the second coupling gap L4 is the same as the direction of the current excited by the fourth antenna radiator 121 at the side close to the second coupling gap L4, the magneto-rheological symmetry of the second coupling gap L4 and the periphery of the second coupling gap L4 is improved, and the cross polarization of the second radiation group 12 is reduced.

The first radiation group 11 of the antenna device 1 in this embodiment includes the first antenna radiator 110 and the second antenna radiator 112 which are arranged and coupled at intervals along the first target direction X or the second target direction Y, and the second radiation group 12 includes the third antenna radiator 120 and the fourth antenna radiator 121 which are arranged and coupled at intervals along the first target direction X or the second target direction Y. The first coupling gap between the first antenna radiator 110 and the second antenna radiator 112 is greater than or equal to 0.2mm and less than or equal to 1.5mm, at least one first grounding point 110a of the first antenna radiator 110 for electrically connecting to a reference ground and at least one second grounding point 112a of the second antenna radiator 112 for electrically connecting to a reference ground are located at both sides of a first feeding point 11a of the first radiation group 11 for electrically connecting to radio frequency signals, so that the direction of current excited by the first antenna radiator 110 at a side close to the first coupling gap is the same as the direction of current excited by the second antenna radiator 112 at a side close to the first coupling gap, and the magnetic symmetry of the first coupling gap and the circumference side of the first coupling gap is improved, thereby reducing cross polarization of the first radiation group 11. The second coupling gap between the third antenna radiator 120 and the fourth antenna radiator 121 is greater than or equal to 0.2mm and less than or equal to 1.5mm, at least one third grounding point 120a of the third antenna radiator 120 for electrically connecting to a reference ground and at least one fourth grounding point 121a of the fourth antenna radiator 121 for electrically connecting to a reference ground are located at two sides of the second feeding point 12a of the second radiation group 12 for electrically connecting to radio frequency signals, so that the direction of current excited by the third antenna radiator 120 at one side close to the second coupling gap is the same as the direction of current excited by the fourth antenna radiator 121 at one side close to the second coupling gap, the magnetic symmetry of the second coupling gap and the periphery of the second coupling gap is improved, cross polarization of the second radiation group 12 can be reduced, the convergence of a phase difference curve of the antenna device 1 can be effectively improved, and high-precision angle measurement is realized.

In addition, since the second radiation group 12 of the antenna device 1 includes the third antenna radiator 120 and the fourth antenna radiator 121, and the third antenna radiator 120 and the fourth antenna radiator 121 are coupled, that is, the third antenna radiator 120 and the fourth antenna radiator 121 of the antenna device 1 can be fed to perform electromagnetic radiation without adding a feeding structure, the bandwidth of the antenna device 1 can be widened, and the radiation efficiency of the antenna device 1 can be improved.

Alternatively, referring to fig. 23 and 24, when the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the first target direction X, the third antenna radiator 120 includes a ninth edge 1201 and a tenth edge 1202 opposite to each other along the second target direction Y, at least one third ground point 120a is disposed on the ninth edge 1201 or the tenth edge 1202, the fourth antenna radiator 121 includes an eleventh edge 1211 and a twelfth edge 1212 opposite to each other along the second target direction Y, and at least one fourth ground point 121a is disposed on the eleventh edge 1211 or the twelfth edge 1212. Wherein, when the third antenna radiator 120 includes the second feeding point 12a, the second feeding point 12a is located between the ninth edge 1201 and the tenth edge 1202. When the fourth antenna radiator 121 includes the second feeding point 12a, the second feeding point 12a is located between the eleventh edge 1211 and the twelfth edge 1212.

By having at least one third ground point 120a provided at the ninth edge 1201 or the tenth edge 1202 of the third antenna radiator 120, the flow path of the current on the third antenna radiator 120 can be increased, thereby increasing the effective electrical length of the third antenna radiator 120, increasing the gain and efficiency of the third antenna radiator 120, and by having at least one fourth ground point 121a provided at the eleventh edge 1211 or the twelfth edge 1212 of the fourth antenna radiator 121, the flow path of the current on the fourth antenna radiator 121 can be increased, thereby increasing the effective electrical length of the fourth antenna radiator 121, increasing the gain and efficiency of the fourth antenna radiator 121.

In one embodiment, the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the first target direction X. The third antenna radiator 120 includes a ninth edge 1201 and a tenth edge 1202 oppositely disposed along the second target direction Y. The fourth antenna radiator 121 includes an eleventh edge 1211 and a twelfth edge 1212 that are oppositely disposed along the second target direction Y. Where ninth edge 1201 is adjacent eleventh edge 1211 and tenth edge 1202 is adjacent twelfth edge 1212. Note that, in the present embodiment, the ninth edge 1201 being close to the eleventh edge 1211 means that the distance between the ninth edge 1201 and the eleventh edge 1211 along the second target direction Y is smaller than the distance between the ninth edge 1201 and the twelfth edge 1212 along the second target direction Y; the tenth edge 1202 being adjacent to the twelfth edge 1212 means that the separation distance between the tenth edge 1202 and the twelfth edge 1212 along the second target direction Y is smaller than the separation distance between the tenth edge 1202 and the eleventh edge 1211 along the second target direction Y. For example, the ninth edge 1201, the eleventh edge 1211, the tenth edge 1202, and the twelfth edge 1212 may be sequentially arranged in the second target direction Y; alternatively, the ninth edge 1201, the eleventh edge 1211, the twelfth edge 1212, and the tenth edge 1202 may be arranged in this order in the second target direction Y; alternatively, the eleventh edge 1211, the ninth edge 1201, the tenth edge 1202, and the twelfth edge 1212 may be arranged in this order in the second target direction Y; still alternatively, the eleventh edge 1211, the ninth edge 1201, the twelfth edge 1212, and the tenth edge 1202 may be arranged in this order in the second target direction Y. Of course, the ninth edge 1201 and the eleventh edge 1211 may also be disposed opposite to each other in the first target direction X, and at this time, the distance between the ninth edge 1201 and the eleventh edge 1211 in the second target direction Y is zero, and the distance between the ninth edge 1201 and the twelfth edge 1212 is the extension dimension of the fourth antenna radiator 121 in the second target direction Y; the tenth edge 1202 and the twelfth edge 1212 may also be disposed opposite each other in the first target direction X, where the distance between the tenth edge 1202 and the twelfth edge 1212 in the second target direction Y is zero, and the distance between the tenth edge 1202 and the eleventh edge 1211 is the extension of the fourth antenna radiator 121 in the second target direction Y.

In one embodiment, as shown in fig. 23, the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the first target direction X, at least one third grounding point 120a is disposed on the ninth edge 1201, and at least one fourth grounding point 121a is disposed on the twelfth edge 1212. By providing the at least one third ground point 120a at the ninth edge 1201 and providing the at least one fourth ground point 121a at the twelfth edge 1212, the effective electrical lengths of the third and fourth antenna radiators 120, 121 are increased, the gain and efficiency of the third and fourth antenna radiators 120, 121 are improved, the at least one third ground point 120a and the at least one fourth ground point 121a are advantageously located on both sides of the second feed point 12a in the second target direction Y, respectively, so that the direction of the current excited by the third antenna radiator 120 on the side close to the second coupling gap is the same as the direction of the current excited by the fourth antenna radiator 121 on the side close to the second coupling gap, the magneto-rheological symmetry of the second coupling gap and the periphery of the second coupling gap is improved, and the cross polarization of the second radiation group 12 is reduced.

In another embodiment, as shown in fig. 24, the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the first target direction X, at least one third ground point 120a is provided at the tenth edge 1202, and at least one fourth ground point 121a is provided at the eleventh edge 1211. By providing the at least one third grounding point 120a at the tenth edge 1202 and providing the at least one fourth grounding point 121a at the eleventh edge 1211, the effective electrical lengths of the third antenna radiator 120 and the fourth antenna radiator 121 are increased, the gain and efficiency of the third antenna radiator 120 and the fourth antenna radiator 121 are improved, the at least one third grounding point 120a and the at least one fourth grounding point 121a are advantageously located on both sides of the second feeding point 12a along the second target direction Y, respectively, so that the direction of the current excited by the third antenna radiator 120 on the side close to the second coupling gap is the same as the direction of the current excited by the fourth antenna radiator 121 on the side close to the second coupling gap, the magneto-rheological symmetry of the second coupling gap and the periphery of the second coupling gap is improved, and the cross polarization of the second radiation group 12 is reduced.

Alternatively, referring to fig. 25 and 26, when the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the second target direction Y, the third antenna radiator 120 includes a thirteenth edge 1203 and a fourteenth edge 1204 that are disposed opposite to each other along the first target direction X, at least one third ground point 120a is disposed on the thirteenth edge 1203 or the fourteenth edge 1204, the fourth antenna radiator 121 includes a fifteenth edge 1213 and a sixteenth edge 1214 that are disposed opposite to each other along the first target direction X, and at least one fourth ground point 121a is disposed on the fifteenth edge 1213 or the sixteenth edge 1214. Wherein, when the third antenna radiator 120 includes the second feeding point 12a, the second feeding point 12a is located between the thirteenth edge 1203 and the fourteenth edge 1204. When the fourth antenna radiator 121 includes the second feeding point 12a, the second feeding point 12a is located between the fifteenth edge 1213 and the sixteenth edge 1214.

By providing at least one third ground point 120a at the thirteenth edge 1203 or the fourteenth edge 1204 of the third antenna radiator 120, the current flow path on the third antenna radiator 120 can be increased, thereby increasing the effective electrical length of the third antenna radiator 120, improving the gain and efficiency of the third antenna radiator 120, and by providing at least one fourth ground point 121a at the fifteenth edge 1213 or the sixteenth edge 1214 of the fourth antenna radiator 121, the current flow path on the fourth antenna radiator 121 can be increased, thereby increasing the effective electrical length of the fourth antenna radiator 121, improving the gain and efficiency of the fourth antenna radiator 121, further enhancing the current excited by the third antenna radiator 120 and the fourth antenna radiator 121, respectively, on the side close to the second coupling gap, reducing the cross polarization of the second radiation group 12, improving the convergence of the phase difference curve of the antenna device 1, and realizing high-precision angle measurement.

In one embodiment, the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the second target direction Y. The third antenna radiator 120 includes a thirteenth edge 1203 and a fourteenth edge 1204 that are oppositely disposed along the second target direction Y. The fourth antenna radiator 121 includes a fifteenth edge 1213 and a sixteenth edge 1214 that are oppositely disposed along the second target direction Y. Wherein thirteenth edge 1203 is adjacent fifteenth edge 1213 and fourteenth edge 1204 is adjacent sixteenth edge 1214. Note that, in the present embodiment, the thirteenth edge 1203 being close to the fifteenth edge 1213 means that the distance between the thirteenth edge 1203 and the fifteenth edge 1213 along the first target direction X is smaller than the distance between the thirteenth edge 1203 and the sixteenth edge 1214 along the first target direction X; the fourteenth edge 1204 being closer to the sixteenth edge 1214 means that a separation distance between the fourteenth edge 1204 and the sixteenth edge 1214 in the first target direction X is smaller than a separation distance between the fourteenth edge 1204 and the fifteenth edge 1213 in the first target direction X. For example, the thirteenth edge 1203, the fifteenth edge 1213, the fourteenth edge 1204, the sixteenth edge 1214 may be arranged in order in the first target direction X; alternatively, the thirteenth edge 1203, the fifteenth edge 1213, the sixteenth edge 1214, the fourteenth edge 1204 may be arranged in order in the first target direction X; still alternatively, the fifteenth edge 1213, thirteenth edge 1203, fourteenth edge 1204, sixteenth edge 1214 may be arranged in order in the first target direction X; still alternatively, the fifteenth edge 1213, thirteenth edge 1203, sixteenth edge 1214, fourteenth edge 1204 may be arranged in order in the first target direction X. Of course, the thirteenth edge 1203 and the fifteenth edge 1213 may be disposed opposite to each other in the second target direction Y, and the distance between the thirteenth edge 1203 and the fifteenth edge 1213 in the first target direction X is zero, and the distance between the thirteenth edge 1203 and the sixteenth edge 1214 is the extension dimension of the fourth antenna radiator 121 in the first target direction X; the fourteenth edge 1204 and the sixteenth edge 1214 may also be disposed opposite to each other in the second target direction Y, where the distance between the fourteenth edge 1204 and the sixteenth edge 1214 in the first target direction X is zero, and the distance between the fourteenth edge 1204 and the fifteenth edge 1213 is the extension of the fourth antenna radiator 121 in the first target direction X.

In one embodiment, as shown in fig. 25, the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the second target direction Y, at least one third grounding point 120a is disposed at the thirteenth edge 1203, and at least one fourth grounding point 121a is disposed at the sixteenth edge 1214. By providing the at least one third ground point 120a at the thirteenth edge 1203 and the at least one fourth ground point 121a at the sixteenth edge 1214, the effective electrical lengths of the third and fourth antenna radiators 120, 121 are increased, the gain and efficiency of the third and fourth antenna radiators 120, 121 are improved, the at least one third ground point 120a and the at least one fourth ground point 121a are advantageously located on both sides of the second feed point 12a in the first target direction X, respectively, so that the direction of the current excited by the third antenna radiator 120 on the side close to the second coupling gap is the same as the direction of the current excited by the fourth antenna radiator 121 on the side close to the second coupling gap, the magneto-rheological symmetry of the second coupling gap and the periphery of the second coupling gap is improved, and the cross polarization of the second radiation group 12 is reduced.

In another embodiment, as shown in fig. 26, the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the second target direction Y, at least one third grounding point 120a is provided at the fourteenth edge 1204, and at least one fourth grounding point 121a is provided at the fifteenth edge 1213. By providing the at least one third grounding point 120a at the fourteenth edge 1204 and providing the at least one fourth grounding point 121a at the fifteenth edge 1213, the effective electrical lengths of the third and fourth antenna radiators 120, 121 are increased, the gain and efficiency of the third and fourth antenna radiators 120, 121 are improved, the at least one third grounding point 120a and the at least one fourth grounding point 121a are advantageously located on both sides of the second feed point 12a in the first target direction X, respectively, so that the direction of the current excited by the third antenna radiator 120 on the side close to the second coupling gap is the same as the direction of the current excited by the fourth antenna radiator 121 on the side close to the second coupling gap, the magneto-rheological symmetry of the second coupling gap and the periphery of the second coupling gap is improved, and the cross polarization of the second radiation group 12 is reduced.

The size of the third antenna radiator 120 along the first target direction X may be greater than or equal to the size of the fourth antenna radiator 121 along the first target direction X, and the size of the third antenna radiator 120 along the second target direction Y may be greater than or equal to the size of the fourth antenna radiator 121 along the second target direction Y. The second feeding point 12a may be provided to the third antenna radiator 120. By providing the second feeding point 12a to the third antenna radiator 120 having a large size, the feeding efficiency of the antenna device 1 can be improved. In the present embodiment, the third antenna radiator 120 is used as the main radiator of the second radiation group 12, and the fourth antenna radiator 121 is used as the parasitic radiator of the third antenna radiator 120, so that cross polarization of the second radiation group 12 can be reduced, and miniaturization of the antenna device 1 can be achieved. Further, by providing the fourth antenna radiator 121, the size of the third antenna radiator 120 in the first target direction X can be made smaller while achieving the same or similar radiation effect, thereby reducing the cross polarization of the third antenna radiator 120 itself and improving the angular accuracy of the antenna device 1.

Alternatively, referring to fig. 27 and 28, when the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the first target direction X, the second feeding point 12a is located between the ninth edge 1201 and the tenth edge 1202. The antenna arrangement 1 further comprises a third feed line 17. One end of the third feeder line 17 is electrically connected to the second feeding point 12a, and the other end of the third feeder line 17 is electrically connected to a radio frequency signal source. The orthographic projection of the third feeder line 17 on the plane of the third antenna radiator 120 extends from the second feeding point 12a toward the ninth edge 1201, or the orthographic projection of the third feeder line 17 on the plane of the third antenna radiator 120 extends from the second feeding point 12a toward the tenth edge 1202.

In an embodiment, as shown in fig. 27, when the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the first target direction X, the second feeding point 12a is located between the ninth edge 1201 and the tenth edge 1202, one end of the third feeder 17 is electrically connected to the second feeding point 12a, the other end of the third feeder 17 is electrically connected to the radio frequency signal source, and the orthographic projection of the third feeder 17 on the surface of the third antenna radiator 120 extends from the second feeding point 12a toward the ninth edge 1201.

In another embodiment, as shown in fig. 28, when the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the first target direction X, the second feeding point 12a is located between the ninth edge 1201 and the tenth edge 1202, one end of the third feeder 17 is electrically connected to the second feeding point 12a, the other end of the third feeder 17 is electrically connected to the radio frequency signal source, and the orthographic projection of the third feeder 17 on the surface of the third antenna radiator 120 extends from the second feeding point 12a toward the tenth edge 1202.

By extending the orthographic projection of the third feeder line 17 on the plane of the third antenna radiator 120 from the second feeding point 12a toward the ninth edge 1201, or extending the orthographic projection of the third feeder line 17 on the plane of the third antenna radiator 120 from the second feeding point 12a toward the tenth edge 1202, the current of the third antenna radiator 120 on the edge in the first target direction X can be reduced, the cross polarization of the third antenna radiator 120 itself can be reduced, and the angular accuracy of the antenna device 1 can be improved.

Of course, in other embodiments, when the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the first target direction X, the orthographic projection of the third feeder 17 on the surface of the third antenna radiator 120 may also extend from the second feeding point 12a toward the edge of the third antenna radiator 120 along the first target direction X.

Alternatively, referring to fig. 29 and 30, when the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the second target direction Y, the second feeding point 12a is located between the thirteenth edge 1203 and the fourteenth edge 1204. The antenna device 1 further comprises a fourth feed line 18. One end of the fourth feeder line 18 is electrically connected to the second feeding point 12a, and the other end of the fourth feeder line 18 is electrically connected to a radio frequency signal source. The orthographic projection of the fourth feeder line 18 on the plane of the third antenna radiator 120 extends from the second feeding point 12a toward the thirteenth edge 1203, or the orthographic projection of the third feeder line 17 on the plane of the third antenna radiator 120 extends from the second feeding point 12a toward the fourteenth edge 1204.

In an embodiment, as shown in fig. 29, when the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the second target direction Y, the second feeding point 12a is located between the thirteenth edge 1203 and the fourteenth edge 1204, one end of the fourth feeder line 18 is electrically connected to the second feeding point 12a, the other end of the fourth feeder line 18 is electrically connected to the radio frequency signal source, and the orthographic projection of the fourth feeder line 18 on the surface of the third antenna radiator 120 extends from the second feeding point 12a toward the thirteenth edge 1203.

In another embodiment, as shown in fig. 30, when the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the second target direction Y, the second feeding point 12a is located between the thirteenth edge 1203 and the fourteenth edge 1204, one end of the fourth feeder line 18 is electrically connected to the second feeding point 12a, the other end of the third feeder line 17 is electrically connected to the radio frequency signal source, and the orthographic projection of the fourth feeder line 18 on the surface of the third antenna radiator 120 extends from the second feeding point 12a toward the fourteenth edge 1204.

By extending the orthographic projection of the third feeder line 17 on the plane of the third antenna radiator 120 from the second feeding point 12a toward the thirteenth edge 1203, or extending the orthographic projection of the third feeder line 17 on the plane of the third antenna radiator 120 from the second feeding point 12a toward the fourteenth edge 1204, the current of the third antenna radiator 120 on the edge in the second target direction Y can be reduced, the cross polarization of the third antenna radiator 120 itself can be reduced, and the angular accuracy of the antenna device 1 can be improved.

Of course, in other embodiments, when the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the second target direction Y, the orthographic projection of the third feeder 17 on the surface of the third antenna radiator 120 may also extend from the second feeding point 12a toward the edge of the third antenna radiator 120 along the second target direction Y.

As shown in fig. 31, when the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the first target direction X, the third antenna radiator 120 and the fourth antenna radiator 121 may be disposed offset in the second target direction Y. It can be appreciated that when the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the first target direction X, the center line of the third antenna radiator 120 along the second target direction Y does not coincide with the center line of the fourth antenna radiator 121 along the second target direction Y. The offset distance between the third antenna radiator 120 and the fourth antenna radiator 121 in the second target direction Y may refer to P3 in fig. 31.

When the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the first target direction X, a misalignment distance between the third antenna radiator 120 and the fourth antenna radiator 121 along the second target direction Y is less than or equal to one fourth of an extension dimension of the third antenna radiator 120 along the second target direction Y. It can be appreciated that P3 is less than or equal to one fourth of the extension dimension of the third antenna radiator 120 in the second target direction Y.

The present embodiment is advantageous in that, when the first radiation group 11 and the second radiation group 12 are arranged at intervals along the second target direction Y, the second antenna radiator 112 is close to the second radiation group 12 along the second target direction Y, so as to improve the compactness of the arrangement of the antenna device 1, reduce the volume of the antenna device 1, and facilitate miniaturization of the antenna device 1. In addition, by arranging the third antenna radiator 120 and the fourth antenna radiator 121 in a staggered manner in the second target direction Y, the pattern deflection of the second radiation group 12 can be reduced, the deviation angle between the main beam and the normal direction of the second radiation group 12 can be reduced, and the beam width of the second radiation group 12 on the E plane can be improved.

As shown in fig. 32, when the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the second target direction Y, the third antenna radiator 120 and the fourth antenna radiator 121 may be disposed offset in the first target direction X. It can be appreciated that when the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the second target direction Y, the center line of the third antenna radiator 120 along the first target direction X does not coincide with the center line of the fourth antenna radiator 121 along the first target direction X. The offset distance between the third antenna radiator 120 and the fourth antenna radiator 121 in the first target direction X may refer to P4 in fig. 32.

When the third antenna radiator 120 and the fourth antenna radiator 121 are arranged at intervals along the second target direction Y, a misalignment distance between the third antenna radiator 120 and the fourth antenna radiator 121 along the first target direction X is less than or equal to one fourth of an extension dimension of the third antenna radiator 120 along the first target direction X. It is understood that P4 is less than or equal to one fourth of the extension dimension of the third antenna radiator 120 in the second target direction Y. In addition, by arranging the third antenna radiator 120 and the fourth antenna radiator 121 in a staggered manner in the first target direction X, the pattern deflection of the second radiation group 12 can be reduced, the deviation angle between the main beam and the normal direction of the second radiation group 12 can be reduced, and the beam width of the second radiation group 12 on the E plane can be improved.

The present embodiment is advantageous in that, when the first radiation group 11 and the second radiation group 12 are arranged at intervals along the first target direction X, the second antenna radiator 112 is close to the second radiation group 12 along the first target direction X, so as to improve the compactness of the arrangement of the antenna device 1, reduce the volume of the antenna device 1, and facilitate miniaturization of the antenna device 1. In addition, by arranging the third antenna radiator 120 and the fourth antenna radiator 121 in a staggered manner in the second target direction Y, the pattern deflection of the second radiation group 12 can be reduced, the deviation angle between the main beam and the normal direction of the second radiation group 12 can be reduced, and the beam width of the second radiation group 12 on the E plane can be improved.

Referring to fig. 33 to 38, fig. 33 is a schematic diagram showing a comparison between return loss curves of an antenna device 1 and a conventional PIFA antenna according to an embodiment of the present application, and it can be seen from fig. 33 that the bandwidth of the antenna device 1 provided by the embodiment of the present application is increased compared with that of the conventional PIFA antenna; fig. 34 is a schematic diagram comparing the radiation efficiency curves of the antenna device 1 and the conventional PIFA antenna provided in the embodiment of the present application, and it can be seen from fig. 34 that the radiation efficiency of the antenna device 1 provided in the embodiment of the present application is higher than that of the conventional PIFA antenna; fig. 35 is a directional diagram of a conventional PIFA antenna, fig. 36 is a directional diagram of an antenna device 1 provided in an embodiment of the present application, and it can be seen from fig. 35 and fig. 36 that one end of the conventional PIFA antenna is grounded, resulting in serious deflection of the antenna directional diagram, a main beam deviates 17 ° from a normal direction, and a 3dB beam width of an E plane is 86.8 °, whereas the antenna device 1 provided in an embodiment of the present application reduces deflection of the directional diagram by introducing a parasitic structure, the main beam deviates 5 ° from the normal direction, and meanwhile the 3dB beam width of the E plane is 99 ° better than the conventional PIFA antenna. Fig. 37 is a schematic diagram of comparing the polarization ratio direction of the antenna device 1 (right diagram) provided in the embodiment of the present application with that of a conventional PIFA antenna (left diagram), and it can be seen from fig. 37 that, compared with the conventional PIFA antenna, the antenna device 1 provided in the embodiment of the present application has a wider coverage range of polarization ratio of more than 10 dB. Fig. 38 is a schematic diagram illustrating comparison of polarization ratio of an antenna device 1 and a conventional PIFA antenna according to an embodiment of the present application. As can be seen from fig. 38, the cross polarization of the antenna device 1 provided in the embodiment of the present application is reduced compared to the cross polarization of a conventional PIFA antenna. The dimensions of the first antenna radiator 110 and the second antenna radiator 112 of the antenna device 1 provided in the embodiment of the present application along the first target direction X are all 5mm, the dimension of the first antenna radiator 110 along the second target direction Y is 4.75mm, the dimension of the second antenna radiator 112 along the second target direction Y is 1.25mm, and the first coupling gap is 0.5mm. The dimensions of a conventional PIFA antenna in the first target direction X and in the second target direction Y are both 5.3mm. It can be understood that the size of the antenna device 1 along the first target direction X provided in the embodiment of the present application is smaller than the size of the conventional PIFA antenna along the first target direction X, that is, the size of the antenna device 1 along the first target direction X is reduced, and the antenna device 1 provided in the embodiment of the present application expands the impedance bandwidth, improves the efficiency of the antenna device 1, reduces the cross polarization of the antenna device 1, and improves the coverage range of the polarization ratio.

Further, referring to fig. 39 to 41, when the second radiation group 12 and the first radiation group 11 are arranged at intervals along the first target direction X, the antenna apparatus 1 further includes a third radiation group 13 arranged at intervals along the second target direction Y with respect to the first radiation group 11, and the third radiation group 13 includes a fifth antenna radiator 130, where the fifth antenna radiator 130 is used for electrically connecting to a radio frequency signal source. Wherein the first target direction X is perpendicular to the second target direction Y. The manner of electrical connection between the fifth antenna radiator 130 and the radio frequency signal source may include one or more of direct electrical connection, indirect electrical connection, coupling connection. The fifth antenna radiator 130 may be a patch antenna radiator or a planar inverted-F antenna radiator. The present embodiment can realize three-dimensional angle measurement by making the antenna device 1 include the first radiation group 11, the second radiation group 12, and the third radiation group 13, the first radiation group 11, the second radiation group 12, and the third radiation group 13 forming a three-dimensional angle measurement antenna group.

In one embodiment, as shown in fig. 39, the fifth antenna radiator 130 is a patch antenna radiator. The shape of the fifth antenna radiator 130 may be circular, elliptical, triangular, square, rectangular, other polygonal shapes, various special shapes, etc., and the rectangular fifth antenna radiator 130 is taken as an example in the present embodiment. In this embodiment, the fifth antenna radiator 130 is not directly grounded, and the cross polarization of the fifth antenna radiator 130 is smaller, so that the cross polarization of the whole antenna device 1 is smaller in combination with the first radiation group 11, thereby improving the convergence of the phase difference curve of the antenna device 1, and being beneficial to improving the accuracy of measuring the arrival angle.

In another embodiment, as shown in fig. 40, the fifth antenna radiator 130 is a planar inverted-F antenna radiator. The fifth antenna radiator 130 comprises a third feed point 13a and at least one fifth ground point 130a. The third feeding point 13a is for electrically connecting to a radio frequency signal source. For example, the third feeding point 13a and the rf signal source may be electrically connected through a microstrip line, a coaxial line, a probe, a spring, etc. At least one fifth ground point 130a is for electrically connecting to a reference ground. The number of fifth ground points 130a is not particularly limited in this application. For example, the number of the fifth ground points 130a may be one, two, three, five, eight, ten, etc., and when the number of the fifth ground points 130a is plural, the plurality of the fifth ground points 130a may be sequentially arranged in a specific direction. Optionally, the at least one fifth ground point 130a is electrically connected to the housing 21 of the electronic device 100, or the at least one fifth ground point 130a is electrically connected to a ground layer of the circuit board 22 of the electronic device 100. The at least one fifth ground point 130a and the reference ground may be electrically connected by a microstrip line, a coaxial line, a probe, a spring, etc. In this embodiment, the fifth antenna radiator 130 has a small bandwidth and a small volume, which is advantageous for widening the bandwidth of the antenna device 1 and achieving miniaturization of the antenna device 1.

In still another embodiment, as shown in fig. 41, the fifth antenna radiator 130 is a planar inverted-F antenna radiator, and the third radiation group 13 may further include seventh antenna radiators 131 spaced apart from the fifth antenna radiator 130 along the first target direction X or the second target direction Y. The fifth antenna radiator 130 is coupled to the seventh antenna radiator 131 and forms a third coupling gap, the third coupling gap being greater than or equal to 0.2mm and less than or equal to 1.5mm, one of the fifth antenna radiator 130 and the seventh antenna radiator 131 including a third feeding point 13a, the third feeding point 13a being for electrically connecting a radio frequency signal source, the fifth antenna radiator 130 including at least one fifth ground point 130a, the fifth ground point 130a being for electrically connecting a reference ground, the seventh antenna radiator 131 including at least one seventh ground point 131a, the seventh ground point 131a being for electrically connecting a reference ground; when the fifth antenna radiator 130 and the seventh antenna radiator 131 are arranged at intervals along the first target direction X, at least one fifth ground point 130a and at least one seventh ground point 131a are respectively located at both sides of the third feeding point 13a along the second target direction Y; when the fifth antenna radiator 130 and the seventh antenna radiator 131 are arranged at intervals in the second target direction Y, at least one fifth ground point 130a and at least one seventh ground point 131a are located on both sides of the third feeding point 13a in the first target direction X, respectively. Specific embodiments of the fifth antenna radiator 130 and the seventh antenna radiator 131 may refer to the first antenna radiator 110 and the second antenna radiator 112 in the above embodiments, and the electrical connection manner of the third feeding point 13a and the radio frequency signal source may refer to the electrical connection manner of the first feeding point 11a and the radio frequency signal source in the above embodiments. In this embodiment, the third radiation group 13 includes the fifth antenna radiator 130 and the seventh antenna radiator 131 which are coupled, so that the direction of the current excited by the fifth antenna radiator 130 near the third coupling gap is the same as the direction of the current excited by the seventh antenna radiator 131 near the third coupling gap, so that the magneto-rheological symmetry of the third coupling gap and the circumferential side of the third coupling gap is improved, and the cross polarization of the third radiation group 13 can be reduced, and the convergence of the phase difference curve of the three-dimensional angle measurement antenna device 1 can be improved by combining with the first radiation group 11 and the second radiation group 12, so as to realize high-precision three-dimensional angle measurement.

Further, referring to fig. 42 to 44, when the second radiation group 12 and the first radiation group 11 are arranged at intervals along the second target direction Y, the antenna apparatus 1 further includes a fourth radiation group 14 arranged at intervals along the first target direction X with respect to the first radiation group 11, and the fourth radiation group 14 includes a sixth antenna radiator 140, where the sixth antenna radiator 140 is configured to be electrically connected to a radio frequency signal source. Wherein the first target direction X is perpendicular to the second target direction Y. The electrical connection between the sixth antenna radiator 140 and the radio frequency signal source may include one or more of a direct electrical connection, an indirect electrical connection, and a coupling connection. The sixth antenna radiator 140 may be a patch antenna radiator or a planar inverted-F antenna radiator. The present embodiment can realize three-dimensional angle measurement by making the antenna device 1 include the first radiation group 11, the second radiation group 12, and the fourth radiation group 14, the first radiation group 11, the second radiation group 12, and the fourth radiation group 14 form a three-dimensional angle measurement antenna group.

In one embodiment, as shown in fig. 42, the sixth antenna radiator 140 is a patch antenna radiator. The sixth antenna radiator 140 may be circular, elliptical, triangular, square, rectangular, other polygonal shapes, various special shapes, etc., and the rectangular sixth antenna radiator 140 is taken as an example in the present embodiment. The sixth antenna radiator 140 is not directly grounded, the cross polarization of the sixth antenna radiator 140 is smaller, and the combination of the sixth antenna radiator 140 with the first radiation group 11 and the second radiation group 12 can make the cross polarization of the whole three-dimensional angle measurement antenna device 1 smaller, so that the convergence of the phase difference curve of the antenna device 1 is improved, and high-precision angle measurement is realized.

In another embodiment, as shown in fig. 42, the sixth antenna radiator 140 is a planar inverted-F antenna radiator. The sixth antenna radiator 140 includes a fourth feed point 14a and at least one sixth ground point 140a. The fourth feeding point 14a is for electrically connecting to a radio frequency signal source. For example, the fourth feeding point 14a and the rf signal source may be electrically connected through a microstrip line, a coaxial line, a probe, a spring, etc. At least one sixth ground point 140a is for electrically connecting to a reference ground. The number of sixth ground points 140a is not particularly limited in this application. For example, the number of the sixth ground points 140a may be one, two, three, five, eight, ten, etc., and when the number of the sixth ground points 140a is plural, the plurality of the sixth ground points 140a may be sequentially arranged in a specific direction. Optionally, at least one sixth ground point 140a is electrically connected to the housing 21 of the electronic device 100, or at least one sixth ground point 140a is electrically connected to a ground layer of the circuit board 22 of the electronic device 100. The at least one sixth ground point 140a may be electrically connected to the reference ground through a microstrip line, a coaxial line, a probe, a spring, etc. In this embodiment, the sixth antenna radiator 140 has a small bandwidth and a small volume, which is advantageous for widening the bandwidth of the antenna device 1 and achieving miniaturization of the antenna device 1.

In still another embodiment, as shown in fig. 43, the sixth antenna radiator 140 is a planar inverted-F antenna radiator, and the fourth radiation group 14 may further include eighth antenna radiators 141 spaced apart from the sixth antenna radiator 140 along the first target direction X or the second target direction Y. The sixth antenna radiator 140 is coupled to the eighth antenna radiator 141 and forms a fourth coupling gap, the fourth coupling gap being greater than or equal to 0.2mm and less than or equal to 1.5mm, one of the sixth antenna radiator 140 and the eighth antenna radiator 141 including a fourth feeding point 14a, the fourth feeding point 14a being for electrically connecting a radio frequency signal source, the sixth antenna radiator 140 including at least one sixth ground point 140a, the sixth ground point 140a being for electrically connecting a reference ground, the eighth antenna radiator 141 including at least one eighth ground point 141a, the eighth ground point 141a being for electrically connecting a reference ground; when the sixth antenna radiator 140 and the eighth antenna radiator 141 are arranged at intervals along the first target direction X, at least one sixth ground point 140a and at least one eighth ground point 141a are respectively located at both sides of the fourth feeding point 14a in the second target direction Y; when the sixth antenna radiator 140 and the eighth antenna radiator 141 are arranged at intervals in the second target direction Y, at least one sixth ground point 140a and at least one eighth ground point 141a are located on both sides of the fourth feeding point 14a in the first target direction X, respectively. Specific embodiments of the sixth antenna radiator 140 and the eighth antenna radiator 141 may refer to the first antenna radiator 110 and the second antenna radiator 112 in the above embodiments, respectively. In this embodiment, the fourth radiation group 14 includes the coupled sixth antenna radiator 140 and the eighth antenna radiator 141, so that the direction of the current excited by the sixth antenna radiator 140 near the fourth coupling gap is the same as the direction of the current excited by the eighth antenna radiator 141 near the fourth coupling gap, which improves the magnetic symmetry of the fourth coupling gap and the circumference of the fourth coupling gap, so that the cross polarization of the fourth radiation group 14 can be reduced, and the convergence of the phase difference curve of the three-dimensional angle measurement antenna device 1 can be improved by combining with the first radiation group 11 and the second radiation group 12, thereby realizing high-precision three-dimensional angle measurement.

The features mentioned in the description, in the claims and in the drawings may be combined with one another at will as far as they are relevant within the scope of the present application. The advantages and features described for the antenna arrangement 1 apply in a corresponding manner to the electronic device 100.

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

Claims

1. An antenna assembly, comprising:

2. The antenna assembly of claim 1, wherein when the first antenna radiator and the second antenna radiator are arranged at intervals along the first target direction, the first antenna radiator includes a first edge and a second edge that are disposed opposite along the second target direction, the at least one first ground point is disposed on the first edge or the second edge, the second antenna radiator includes a third edge and a fourth edge that are disposed opposite along the second target direction, and the at least one second ground point is disposed on the third edge or the fourth edge; when the first antenna radiator and the second antenna radiator are arranged at intervals along the second target direction, the first antenna radiator comprises a fifth edge and a sixth edge which are oppositely arranged along the first target direction, at least one first grounding point is arranged on the fifth edge or the sixth edge, the second antenna radiator comprises a seventh edge and an eighth edge which are oppositely arranged along the first target direction, and at least one second grounding point is arranged on the seventh edge or the eighth edge.

3. The antenna assembly of claim 2, wherein the first edge is proximate to the third edge, the second edge is proximate to the fourth edge, the at least one first ground point is disposed on the first edge, the at least one second ground point is disposed on the fourth edge, or the at least one first ground point is disposed on the second edge, the at least one second ground point is disposed on the third edge; the fifth edge is close to the seventh edge, the sixth edge is close to the eighth edge, the at least one first grounding point is arranged on the fifth edge, the at least one second grounding point is arranged on the eighth edge, or the at least one first grounding point is arranged on the sixth edge, and the at least one second grounding point is arranged on the seventh edge.

4. The antenna assembly of claim 2, wherein a dimension of the first antenna radiator in the first target direction is greater than or equal to a dimension of the second antenna radiator in the first target direction, wherein a dimension of the first antenna radiator in the second target direction is greater than or equal to a dimension of the second antenna radiator in the second target direction, and wherein the first feed point is provided to the first antenna radiator.

5. The antenna assembly of claim 4, wherein the first feed point is located between the first edge and the second edge when the first antenna radiator and the second antenna radiator are arranged at intervals along the first target direction, the antenna assembly further comprising a first feed line, one end of the first feed line is electrically connected to the first feed point, the other end of the first feed line is electrically connected to the radio frequency signal source, an orthographic projection of the first feed line on a plane of the first antenna radiator extends from the first feed point toward the first edge, or an orthographic projection of the first feed line on a plane of the first antenna radiator extends from the first feed point toward the second edge; when the first antenna radiator and the second antenna radiator are arranged at intervals along the second target direction, the first feeding point is located between the fifth edge and the sixth edge, the antenna assembly further comprises a second feeder line, one end of the second feeder line is electrically connected with the first feeding point, the other end of the second feeder line is electrically connected with the radio frequency signal source, the orthographic projection of the second feeder line on the surface of the first antenna radiator extends from the first feeding point towards the fifth edge, or the orthographic projection of the second feeder line on the surface of the first antenna radiator extends from the first feeding point towards the sixth edge.

6. The antenna assembly of claim 4, wherein the first feed point is located between the first edge and the second edge when the first antenna radiator and the second antenna radiator are arranged at intervals along the first target direction, the antenna assembly further comprising a first feed line, one end of the first feed line is electrically connected to the first feed point, the other end of the first feed line is electrically connected to the radio frequency signal source, an orthographic projection of the first feed line on a plane of the first antenna radiator extends from the first feed point toward the third edge, or an orthographic projection of the first feed line on a plane of the first antenna radiator extends from the first feed point toward the fourth edge; when the first antenna radiator and the second antenna radiator are arranged at intervals along the second target direction, the first feeding point is located between the fifth edge and the sixth edge, the antenna assembly further comprises a second feeder line, one end of the second feeder line is electrically connected with the first feeding point, the other end of the second feeder line is electrically connected with the radio frequency signal source, the orthographic projection of the second feeder line on the surface of the first antenna radiator extends from the first feeding point towards the seventh edge, or the orthographic projection of the second feeder line on the surface of the first antenna radiator extends from the first feeding point towards the eighth edge.

7. The antenna assembly of claim 1, further comprising a ground plane and a feed, the ground plane being stacked with the first radiating group, one end of the feed being electrically connected to the first feed point, the other end of the feed extending through the ground plane to electrically connect the radio frequency signal source.

8. The antenna assembly according to any one of claims 1 to 7, wherein when the first antenna radiator and the second antenna radiator are arranged at intervals along the first target direction, the first antenna radiator and the second antenna radiator are arranged in a staggered manner in the second target direction; when the first antenna radiator and the second antenna radiator are arranged at intervals along the second target direction, the first antenna radiator and the second antenna radiator are arranged in a staggered mode along the first target direction.

9. The antenna assembly of claim 8, wherein when the first antenna radiator and the second antenna radiator are arranged at intervals along the first target direction, a misalignment distance between the first antenna radiator and the second antenna radiator along the second target direction is less than or equal to a quarter of an extension dimension of the first antenna radiator along the second target direction; when the first antenna radiator and the second antenna radiator are arranged at intervals along the second target direction, the dislocation distance between the first antenna radiator and the second antenna radiator along the first target direction is smaller than or equal to one fourth of the extension size of the first antenna radiator along the first target direction.

10. The antenna assembly of any one of claims 1 to 7, wherein the first coupling gap is greater than or equal to 0.2mm and less than or equal to 1.5mm.

11. An antenna arrangement comprising a second radiating group and the antenna of any one of claims 1 to 10, the second radiating group being spaced apart from the first radiating group along the first target direction or the second target direction, the second radiating group comprising a third antenna radiator for electrically connecting the radio frequency signal source.

12. The antenna arrangement according to claim 11, characterized in that the second radiating group further comprises at least one fourth antenna radiator arranged at intervals from the third antenna radiator in the first target direction or the second target direction, the fourth antenna radiator being coupled to the third antenna radiator and forming a second coupling gap, the second coupling gap being greater than or equal to 0.2mm and less than or equal to 1.5mm, one of the fourth antenna radiator and the third antenna radiator comprising a second feed point for electrically connecting the radio frequency signal source, the third antenna radiator comprising at least one third ground point for electrically connecting the reference ground, the fourth antenna radiator comprising at least one fourth ground point for electrically connecting the reference ground, the at least one third ground point being arranged at intervals from the first antenna radiator and the fourth antenna radiator in the first target direction and the at least one third ground point being located at respective sides of the second feed point in the first target direction; when the third antenna radiator and the fourth antenna radiator are arranged at intervals along the second target direction, the at least one third grounding point and the at least one fourth grounding point are respectively positioned at two sides of the second feeding point along the first target direction.

13. The antenna device according to claim 12, wherein when the third antenna radiator and the fourth antenna radiator are arranged at intervals in the first target direction, the third antenna radiator includes a ninth edge and a tenth edge that are disposed opposite to each other in the second target direction, the at least one third ground point is disposed at the ninth edge or the tenth edge, the fourth antenna radiator includes an eleventh edge and a twelfth edge that are disposed opposite to each other in the second target direction, and the at least one fourth ground point is disposed at the eleventh edge or the twelfth edge; when the third antenna radiator and the fourth antenna radiator are arranged at intervals along the second target direction, the third antenna radiator comprises a thirteenth edge and a fourteenth edge which are oppositely arranged along the first target direction, at least one third grounding point is arranged on the thirteenth edge or the fourteenth edge, the fourth antenna radiator comprises a fifteenth edge and a sixteenth edge which are oppositely arranged along the first target direction, and at least one fourth grounding point is arranged on the fifteenth edge or the sixteenth edge.

14. The antenna assembly of claim 13 wherein the eleventh edge is proximate to the ninth edge, the twelfth edge is proximate to the tenth edge, the at least one third ground point is disposed on the ninth edge, the at least one fourth ground point is disposed on the twelfth edge, or the at least one third ground point is disposed on the tenth edge, the at least one fourth ground point is disposed on the eleventh edge; the fifteenth edge is close to the thirteenth edge, the sixteenth edge is close to the fourteenth edge, the at least one third grounding point is arranged on the thirteenth edge, the at least one fourth grounding point is arranged on the sixteenth edge, or the at least one third grounding point is arranged on the fourteenth edge, and the at least one fourth grounding point is arranged on the fifteenth edge.

15. The antenna device according to claim 14, wherein a dimension of the third antenna radiator in the first target direction is larger than a dimension of the fourth antenna radiator in the first target direction, a dimension of the third antenna radiator in the second target direction is larger than a dimension of the fourth antenna radiator in the second target direction, and the second feeding point is provided to the third antenna radiator.

16. The antenna device according to claim 15, wherein when the third antenna radiator and the fourth antenna radiator are arranged at intervals along the first target direction, the second feeding point is located between the ninth edge and the tenth edge, the antenna device further comprises a third feeding line, one end of the third feeding line is electrically connected to the second feeding point, the other end of the third feeding line is electrically connected to the radio frequency signal source, an orthographic projection of the third feeding line on a plane of the third antenna radiator extends from the second feeding point toward the ninth edge, or an orthographic projection of the third feeding line on a plane of the third antenna radiator extends from the second feeding point toward the tenth edge; when the third antenna radiator and the fourth antenna radiator are arranged at intervals along the second target direction, the second feeding point is located between the thirteenth edge and the fourteenth edge, the antenna device further comprises a fourth feeding line, one end of the fourth feeding line is electrically connected with the second feeding point, the other end of the fourth feeding line is electrically connected with the radio frequency signal source, the orthographic projection of the fourth feeding line on the surface of the third antenna radiator extends from the second feeding point towards the thirteenth edge, or the orthographic projection of the fourth feeding line on the surface of the third antenna radiator extends from the second feeding point towards the fourteenth edge.

17. The antenna device according to any one of claims 12 to 16, wherein when the third antenna radiator and the fourth antenna radiator are arranged at intervals along the first target direction, the third antenna radiator and the fourth antenna radiator are arranged in a staggered manner in the second target direction; when the third antenna radiator and the fourth antenna radiator are arranged at intervals along the second target direction, the third antenna radiator and the fourth antenna radiator are arranged in a staggered mode along the first target direction.

18. The antenna device according to claim 17, wherein when the third antenna radiator and the fourth antenna radiator are arranged at intervals in the first target direction, a misalignment distance between the third antenna radiator and the fourth antenna radiator in the second target direction is less than or equal to a quarter of an extension dimension of the third antenna radiator in the second target direction; when the third antenna radiator and the fourth antenna radiator are arranged at intervals along the second target direction, the dislocation distance between the third antenna radiator and the fourth antenna radiator along the first target direction is smaller than or equal to one fourth of the extension size of the third antenna radiator along the first target direction.

19. The antenna device according to any one of claims 12 to 16, wherein when the second radiation group is spaced apart from the first radiation group along the first target direction, the antenna device further comprises a third radiation group spaced apart from the first radiation group along the second target direction, the third radiation group comprising a fifth antenna radiator for electrically connecting the radio frequency signal source; when the second radiation group and the first radiation group are arranged at intervals along the second target direction, the antenna device further comprises a fourth radiation group which is arranged with the first radiation group at intervals along the first target direction, the fourth radiation group comprises a sixth antenna radiator, and the sixth antenna radiator is used for being electrically connected with the radio frequency signal source, wherein the first target direction is perpendicular to the second target direction.

20. An electronic device comprising a device body and an antenna arrangement according to any one of claims 11 to 19, the device body being arranged to carry the antenna arrangement.