CN117810674A - Antenna assembly and electronic equipment - Google Patents

Antenna assembly and electronic equipment Download PDF

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Publication number
CN117810674A
CN117810674A CN202211230539.7A CN202211230539A CN117810674A CN 117810674 A CN117810674 A CN 117810674A CN 202211230539 A CN202211230539 A CN 202211230539A CN 117810674 A CN117810674 A CN 117810674A
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CN
China
Prior art keywords
radiating portion
radiating
radiation
ground
antenna assembly
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211230539.7A
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Chinese (zh)
Inventor
雍征东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
Original Assignee
Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to CN202211230539.7A priority Critical patent/CN117810674A/en
Priority to PCT/CN2023/107707 priority patent/WO2024066677A1/en
Publication of CN117810674A publication Critical patent/CN117810674A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors

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  • Details Of Aerials (AREA)

Abstract

The application provides an antenna assembly and electronic equipment. The antenna assembly comprises a ground layer and a first radiation group. The first radiation group and the ground layer range upon range of and the interval setting, first radiation group includes first antenna radiator and first radiation branch knot, first antenna radiator includes first earth connection, first feed point, first free edge, first side and second side, first earth connection includes at least one first earth connection, at least one first earth connection electricity is connected the ground layer, first feed point is used for electrically connecting the radio frequency signal source, first radiation branch knot includes first radiation portion, first radiation portion is located one side that first free edge deviates from first earth connection, and form first coupling gap between first radiation portion and the first free edge, first radiation portion includes at least one second earth connection, at least one second earth connection electricity is connected the ground layer. The electronic device comprises a device body and an antenna assembly. The antenna assembly and the electronic equipment provided by the application are low in cross polarization and high in angle measurement precision.

Description

Antenna assembly and electronic equipment
Technical Field
The application relates to the technical field of communication, in particular to an antenna assembly and electronic equipment.
Background
In the technical scheme that the phase difference is determined by the angle measurement antenna group formed by a plurality of antennas which are arranged at intervals according to a specific direction, so that the angle measurement is realized, the convergence of the phase difference curve of the angle measurement antenna group is poor due to the cross polarization influence of the antennas.
Disclosure of Invention
The application provides an antenna assembly and electronic equipment capable of reducing cross polarization.
In one aspect, the present application provides an antenna assembly comprising:
a ground layer; and
The first radiation group, with the stratum stack sets up and the interval, the first radiation group includes first antenna radiator and first radiation branch, the first antenna radiator includes first earth connection, first feed point, first free limit, first side and second side, first earth connection first feed point with first free limit arranges in proper order, first side connect in between the one end of first earth connection and the one end of first free limit, the second side connect in between the other end of first earth connection and the other end of first free limit, first earth connection includes at least one first earth connection, at least one first earth connection electricity connects the earth connection, first feed point is used for the electricity to connect the radio frequency signal source, first radiation branch includes first radiating part, first radiating part is located first free limit deviates from one side of first earth connection, and first radiating part with first free limit forms at least one first earth connection between the first earth connection gap.
On the other hand, the application also provides electronic equipment, which comprises an equipment body and the antenna assembly, wherein the equipment body is used for bearing the antenna assembly.
The antenna assembly that this application provided includes ground plane and first radiation group, first radiation group stacks up and the interval sets up with the ground plane, first radiation group includes first antenna radiator and first radiation branch, because first antenna radiator is including the first earth limit of arranging in proper order, first feed point and first free limit, first earth limit includes at least one first earth point, the ground plane is connected to at least one first earth point electricity, make the electric current on first earth limit stronger, first free limit is not grounded, therefore the electric field on first free limit is stronger, the electric current is weaker, lead to first antenna radiator overall current distribution inequality, the symmetry is relatively poor, and first radiation branch includes first radiation portion, first radiation portion is located one side of first free limit deviating from first earth limit, and form first coupling gap between first radiation portion and the first free limit, first radiation portion includes at least one second earth point, at least one second earth point electricity is connected, make the electric current on first earth limit stronger, the electric current distribution who makes first antenna radiator overall current distribution uneven, and the phase difference between the first radiation angle of group can be reached with the first radiation angle of first radiation of group, the phase difference between the first radiation angle of relative low-phase difference between the first radiation angle, the phase difference between the group can be measured to the first radiation angle, and the phase difference between the first radiation angle is better, and the group has the measurement of the phase difference can be reached to the first radiation angle is reached to the first radiation angle, and the phase difference is better.
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 of FIG. 2 including an antenna assembly;
fig. 5 is a schematic plan view of an antenna assembly according to an embodiment of the present disclosure;
fig. 6 is a schematic plan view of the antenna assembly shown in fig. 5, including a first antenna radiator and a first radiating branch, where the first radiating branch includes a first radiating portion;
fig. 7 is a schematic plan view of a first radiating stub of the antenna assembly shown in fig. 6 further including a second radiating portion;
fig. 8 is a schematic plan view of a first radiating stub of the antenna assembly shown in fig. 7 further including a third radiating portion;
fig. 9 is a schematic plan view of the antenna assembly shown in fig. 8, in which the second radiation portion and the third radiation portion are symmetrical about a line connecting a center point of the first ground side and a center point of the first free side;
Fig. 10 is a schematic plan view of a first radiating stub of the antenna assembly of fig. 9 including a first sub-ground point and a second sub-ground point;
fig. 11 is a schematic plan view of another planar structure of the first radiating stub of the antenna assembly shown in fig. 9 including a first sub-ground point and a second sub-ground point;
fig. 12 is a schematic plan view of the antenna assembly of fig. 10, wherein the first radiating branch further includes a third sub-ground point;
fig. 13 is a schematic plan view of a first radiating stub of the antenna assembly shown in fig. 9 further including a fourth radiating portion;
fig. 14 is a schematic plan view of the antenna assembly of fig. 9 further including a first feed;
fig. 15 is a schematic plan view of the antenna assembly of fig. 9 further including a second feed;
fig. 16 is a return loss curve of an antenna assembly provided in an embodiment of the present application;
fig. 17 is a radiation efficiency curve of an antenna assembly according to an embodiment of the present disclosure;
fig. 18 is a radiation pattern of a conventional PIFA antenna;
fig. 19 is a radiation pattern of an antenna assembly according to an embodiment of the present application;
fig. 20 is a schematic diagram showing the comparison of the polarization ratio direction of the antenna assembly of the present embodiment and the conventional PIFA antenna;
fig. 21 is a main polarization pattern (left pattern) of the E-plane, a main polarization pattern of the H-plane, and a cross polarization pattern of the antenna assembly provided in the present embodiment;
Fig. 22 is a current distribution diagram of an antenna assembly according to the present embodiment;
fig. 23 is a schematic plan view of the antenna assembly shown in fig. 9 further including a second radiation group, and the second radiation group includes a second antenna radiator;
fig. 24 is a schematic plan view of the antenna assembly shown in fig. 9 further including a second radiation group, and the second radiation group includes a second antenna radiator and a second radiation branch;
fig. 25 is a schematic plan view of a second radiating stub of the antenna assembly shown in fig. 24 including a sixth radiating portion;
fig. 26 is a schematic plan view of a second radiating stub of the antenna assembly shown in fig. 25 including a seventh radiating portion;
fig. 27 is a schematic plan view of a second radiating stub of the antenna assembly shown in fig. 25 including a sixth radiating portion and a seventh radiating portion;
fig. 28 is a schematic plan view of a mirror arrangement of the first radiation set and the second radiation set of the antenna assembly shown in fig. 27;
fig. 29 is a schematic view of another planar structure of the first radiation set and the second radiation set of the antenna assembly shown in fig. 27 in mirror image arrangement;
fig. 30 is a schematic plan view of the antenna assembly shown in fig. 27, in which a first radiation group and a second radiation group are sequentially arranged;
fig. 31 is a schematic plan view of another antenna assembly shown in fig. 27, in which a first radiation group and a second radiation group are sequentially arranged;
Fig. 32 is a schematic plan view of the antenna assembly shown in fig. 28 further including a third radiation group including a third antenna radiator, and the third antenna radiator and the first radiation group are arranged along a second target direction;
fig. 33 is a schematic plan view of the antenna assembly shown in fig. 28 further including a third radiation group, the third radiation group including a third antenna radiator, and the third antenna radiator and the second radiation group being arranged along a second target direction;
fig. 34 is a schematic plan view of the antenna assembly shown in fig. 28 further including a third radiation group, the third radiation group including a third antenna radiator, and the third antenna radiator and the first radiation group being arranged along a first target direction;
fig. 35 is a schematic plan view of the antenna assembly shown in fig. 28 further including a third radiation group, and the third radiation group includes a third antenna radiator and a third radiation branch;
fig. 36 is a schematic plan view of a third radiating stub of the antenna assembly of fig. 35 including a ninth radiating portion;
fig. 37 is a schematic plan view of a second radiating stub of the antenna assembly shown in fig. 35 including a seventh radiating portion;
fig. 38 is a schematic plan view of a second radiating branch of the antenna assembly shown in fig. 35, including a sixth radiating portion and a seventh radiating portion.
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 2 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, when the transmission and reception polarizations are matched, 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 if the polarization purity is general. Therefore, the antenna assembly and the electronic equipment are low in cross polarization and high in angle measurement precision.
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 present application to "an embodiment" or "implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment or implementation may be included in at least one embodiment of the present 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 assembly 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 device body 2 is used for carrying the antenna assembly 1. Specifically, the antenna assembly 1 may be directly carried on one or more components of the device body 2 (e.g., the circuit board 22 or the housing 21), or may be carried on one or more components of the device body 2 by other support structures. The antenna assembly 1 may be carried in the device body 2 (i.e. in the space between the display 20 and the housing 21) or may be partially integrated in the housing 21 of the device body 2.
The antenna assembly 1 is used to implement the wireless communication function of the electronic device 100. In one embodiment of the present application the antenna assembly 1 is a UWB antenna assembly, i.e. an antenna assembly for short range wireless communication. The transmission distance of the antenna assembly 1 may be within 10 m. Because UWB does not adopt carrier wave, but utilizes non-sinusoidal narrow pulse transmission data of nanosecond to microsecond level, therefore UWB antenna assembly 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 assembly 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 assembly 1 may include 6.5GHz or 8GHz. In the following embodiment, the center frequency of the antenna assembly 1 is taken as an example including 8GHz.
A coordinate system as shown in fig. 3 is established for convenience of description. The X-axis direction may be understood as a width direction of the electronic device 100, the Y-axis direction may be understood as a length direction of the electronic device 100, and the Z-axis direction may be understood as a thickness direction of the electronic device 100.
As shown in fig. 4, the antenna assembly 1 comprises a ground layer 10 and a first radiating group 11. In the electronic device 100, the ground layer 10 may be the case 21 of the electronic device 100, or may be a ground reference on the circuit board 22 of the electronic device 100, or may be a ground element electrically connected to the case 21 of the electronic device 100, or may be a ground element electrically connected to a ground reference on the circuit board 22 of the electronic device 100, or the like. The ground plane 10 of the antenna assembly 1 is referred to as ground on the circuit board 22 of the electronic device 100 in the following embodiments, unless explicitly stated. The first radiation group 11 is laminated with the ground layer 10 and disposed at a spacing. In one possible embodiment, the antenna assembly 1 may further comprise a dielectric substrate 12. The ground layer 10 and the first radiation group 11 may be respectively disposed on two opposite surfaces of the dielectric substrate 12. The material of the dielectric substrate 12 may include fiberglass, ceramic, plastic, etc.
As shown in fig. 5, fig. 5 is a schematic structural diagram of an antenna assembly 1 according to an embodiment of the present application. The first radiating group 11 of the antenna assembly 1 comprises a first antenna radiator 110 and a first radiating stub 112. The material of the first antenna radiator 110 and the material of the first radiating branch 112 are conductive materials. For example: the material of the first antenna radiator 110 and the material of the first radiating branch 112 may be metal, alloy, etc. The material of the first antenna radiator 110 may be the same as or different from the material of the first radiating stub 112. The first antenna radiator 110, the first radiating stub 112 may operate in a quarter wavelength resonant mode.
The first antenna radiator 110 includes a first ground edge 1101, a first feed point 1102, a first free edge 1103, a first side 1104, and a second side 1105. The first ground edge 1101, the first feeding point 1102, and the first free edge 1103 are arranged in this order. The first side 1104 is connected between one end of the first ground 1101 and one end of the first free 1103. The second side 1105 is connected between the other end of the first ground edge 1101 and the other end of the first free edge 1103. In this embodiment, the first ground edge 1101, the first feeding point 1102, and the first free edge 1103 are sequentially arranged along the X-axis direction. Of course, in other embodiments, the first ground edge 1101, the first feeding point 1102, and the first free edge 1103 may be sequentially arranged along the Y-axis direction. The first antenna radiator 110 may be understood as a planar inverted-F (PIFA) antenna radiator. The first ground edge 1101 includes at least one first ground point 110a, and the at least one first ground point 110a is electrically connected to the ground layer 10. The number of the first grounding points 110a is not specifically limited, and the first grounding points 110a arranged at a plurality of intervals are exemplified in the following embodiments. Of course, in other embodiments, the number of the first grounding points 110a may be one, and when the number of the first grounding points 110a is smaller, the structure of the first radiation group 11 is simple and the processing is convenient. The first grounding point 110a and the ground layer 10 may be electrically connected through a microstrip line, a coaxial line, a probe, a spring, etc. The first feeding point 1102 is used for electrically connecting to the radio frequency signal source 30. The first feeding point 1102 and the rf signal source 30 may be electrically connected through a microstrip line, a coaxial line, a probe, a spring, etc. The radio frequency signal source 30 may be a radio frequency chip for generating a feed current for exciting a corresponding resonance on the first antenna radiator 110 via the first feed point 1102. The first free edge 1103 may be understood as an edge of the first antenna radiator 110 that is not directly electrically connected to other components.
First radiating branch 112 includes a first radiating portion 1120. The material of the first radiation portion 1120 is a conductive material. For example: the material of the first radiation portion 1120 may be metal, alloy, or the like. The first radiating portion 1120 is located on a side of the first free edge 1103 facing away from the first ground edge 1101, and a first coupling gap is formed between the first radiating portion 1120 and the first free edge 1103. It will be appreciated that the first radiating portion 1120 is spaced from the first free edge 1103, and the first radiating portion 1120 is spaced from the first free edge 1103 by a distance such that the first radiating portion 1120 and the first free edge 1103 can be electrically or electromagnetically coupled. The first coupling gap may be referred to as L1 in fig. 5. The first radiating portion 1120 includes at least one second ground point 112a, and the at least one second ground point 112a is electrically connected to the ground layer 10. The number of the second grounding points 112a is not particularly limited, and the second grounding points 112a arranged at intervals are exemplified in the following embodiments. Of course, in other embodiments, the number of the second grounding points 112a may be one. The second grounding point 112a and the ground layer 10 may be electrically connected by a microstrip line, a coaxial line, a probe, a spring, or the like.
It will be appreciated that the first feeding point 1102 of the first antenna radiator 110 is electrically connected to the rf signal source 30, and can directly obtain the feeding current from the rf signal source 30 to realize feeding. And the first radiating branch 112 is coupled to the first free edge 1103 of the first antenna radiator 110, the first radiating branch 112 may draw a feed current from the first antenna radiator 110 to effect feeding.
The antenna assembly 1 provided by the application comprises a grounding layer 10 and a first radiation group 11, the first radiation group 11 and the grounding layer 10 are stacked and arranged at intervals, the first radiation group 11 comprises a first antenna radiator 110 and a first radiation branch 112, the first antenna radiator 110 comprises a first grounding edge 1101, a first feed point 1102 and a first free edge 1103 which are sequentially arranged, the first grounding edge 1101 comprises at least one first grounding point 110a, the at least one first grounding point 110a is electrically connected with the grounding layer 10, the first grounding edge 1101 is stronger in current, the first free edge 1103 is not grounded, therefore, the electric field of the first free edge 1103 is stronger, the electric current is weaker, the overall current distribution of the first antenna radiator 110 is uneven, the symmetry is poor, the first radiation branch 112 comprises a first radiation part 1120, the first radiation part 1103 is positioned on one side of the first free edge 1103, which is far away from the first grounding edge 1101, a first coupling gap 1120 is formed between the first radiation part and the first free edge 1103, namely, the first radiation part and the first free edge 1103 can be connected with the first radiation part 11 a, the first radiation part can reach the first radiation group 11, the current is better, the current distribution of the first radiation branch 110 is better, the current distribution is more uniform, the symmetry is worse, and the phase difference is better, and the phase difference between the first radiation branch 1120 and the first radiation group 11 can reach the first radiation group 11, and the first radiation angle can reach the first radiation angle 11, and the first radiation group, and the measurement accuracy is better, and the current, and the phase difference is better, and the phase difference can be better, and the phase difference between the first radiation angle and the measurement.
Optionally, the first coupling gap has a dimension greater than or equal to 0.2mm and less than or equal to 1.5mm. The smaller the size of the first coupling gap, the stronger the magnetic flow of the first radiation set 11 in the first coupling gap, and the smaller the cross polarization of the first radiation set 11, the more remarkable the effect on improving the angular accuracy of the antenna assembly 1. It will be appreciated that by making the size of the first coupling gap greater than or equal to 0.2mm and less than or equal to 1.5mm, the effect of reducing the cross polarization of the first radiation group 11 can be improved, thereby further contributing to the improvement of the accuracy of the angle of arrival measured by the antenna assembly 1.
Wherein, as shown in fig. 6, the second side 1105 is disposed opposite the first side 1104. In the embodiment of the present application, the second side 1105 is opposite to the first side 1104 along the Y-axis direction.
In one possible embodiment, as shown in fig. 7, the first radiating branch 112 further includes a second radiating portion 1121. The second radiation portion 1121 is made of an electrically conductive material. For example: the material of the second radiation portion 1121 may be a metal, an alloy, or the like. The material of the second radiation portion 1121 may be the same as or different from that of the first radiation portion 1120. One end of the second radiating portion 1121 is connected to the first radiating portion 1120, and the other end extends toward the side of the first antenna radiator 110. In other words, the second radiation portion 1121 is bent and connected with the first radiation portion 1120. It will be appreciated that in this embodiment, the first radiating stub 112 is generally L-shaped. The second radiation portion 1121 and the first radiation portion 1120 may be integrally connected or may be separately connected. The second radiating portion 1121 is connected to the first radiating portion 1120 and then naturally conducts. The second radiation portion 1121 is disposed opposite to the first side 1104, and a second coupling gap is formed between the second radiation portion 1121 and the first side 1104. It will be appreciated that the second radiating portion 1121 is spaced from the first side 1104, and the first radiating portion 1120 is spaced from the first side 1104 by a distance such that the second radiating portion 1121 may be electrically or electromagnetically coupled to the first side 1104. The second coupling gap may be referred to as L2 in fig. 7.
Optionally, the second coupling gap has a dimension greater than or equal to 0.2mm and less than or equal to 1.5mm. The smaller the size of the second coupling gap, the stronger the magnetic flow of the first radiation set 11 in the second coupling gap, and the smaller the cross polarization of the first radiation set 11, the more remarkable the effect on improving the angular accuracy of the antenna assembly 1. It will be appreciated that by making the size of the second coupling gap greater than or equal to 0.2mm and less than or equal to 1.5mm, the effect of reducing the cross polarization of the first radiation group 11 can be improved, thereby further contributing to the improvement of the accuracy of the angle of arrival measured by the antenna assembly 1. The size of the second coupling gap may be the same as or different from the size of the first coupling gap.
By making the first radiating branch 112 further include a second radiating portion 1121, one end of the second radiating portion 1121 is connected to the first radiating portion 1120, and the other end extends toward the side of the first antenna radiator 110, a second coupling gap is formed between the second radiating portion 1121 and the first side 1104 of the first antenna radiator 110, so that the second radiating portion 1121 participates in radiation, thereby improving the radiation performance of the first radiating group 11 and improving the gain of the antenna assembly 1. In addition, the second radiation portion 1121 is disposed opposite to the first side 1104, and the current directions of the second radiation portion 1121 and the first side 1104 under the excitation of the radio frequency signal source are the same, so that the magnetic symmetry of the second coupling gap and the periphery of the second coupling gap is improved, and the cross polarization of the first radiation group 11 is reduced.
In another possible embodiment, as shown in fig. 8, first radiating branch 112 further includes a third radiating portion 1122. The third radiation portion 1122 is made of a conductive material. For example: the material of the third radiation portion 1122 may be a metal, an alloy, or the like. The material of the third radiation portion 1122 may be the same as or different from that of the first radiation portion 1120. One end of the third radiation portion 1122 is connected to the first radiation portion 1120, and the other end extends toward the side of the first antenna radiator 110. In other words, the third radiation portion 1122 is bent and connected with the first radiation portion 1120. The third radiation portion 1122 and the first radiation portion 1120 may be integrally connected or may be separately connected. The third radiation portion 1122 is connected to the first radiation portion 1120 and then naturally turned on. The third radiation portion 1122 is disposed opposite to the second radiation portion 1121 in the Y-axis direction. In this embodiment, the first radiating stub 112 is substantially U-shaped. The third radiation portion 1122 is disposed opposite the second side 1105, and a third coupling gap is formed between the third radiation portion 1122 and the second side 1105. It will be appreciated that the third radiating portion 1122 is spaced from the second side 1105 and the third radiating portion 1122 is spaced from the second side 1105 by a distance such that the third radiating portion 1122 is electrically or electromagnetically coupled to the second side 1105. The third coupling gap may be referred to as L3 in fig. 8.
Optionally, the third coupling gap has a dimension greater than or equal to 0.2mm and less than or equal to 1.5mm. The smaller the size of the third coupling gap, the stronger the magnetic flow of the first radiation set 11 in the third coupling gap, and the smaller the cross polarization of the first radiation set 11, the more remarkable the effect on improving the angular accuracy of the antenna assembly 1. It will be appreciated that by making the size of the third coupling gap greater than or equal to 0.2mm and less than or equal to 1.5mm, the effect of reducing the cross polarization of the first radiation group 11 can be improved, thereby further contributing to the improvement of the accuracy of the angle of arrival measured by the antenna assembly 1. Wherein the size of the third coupling gap may be the same as or different from the size of the first coupling gap.
By making the first radiating branch 112 further include a third radiating portion 1122, one end of the third radiating portion 1122 is connected to the first radiating portion 1120, and the other end extends toward the side of the first antenna radiator 110, a third coupling gap is formed between the third radiating portion 1122 and the second side 1105 of the first antenna radiator 110, so that the third radiating portion 1122 participates in radiation, thereby further improving the radiation performance of the first radiating group 11 and improving the gain of the antenna assembly 1. In addition, the first radiating branch 112 includes a first radiating portion 1120, a second radiating portion 1121 connected to one side of the first radiating portion 1120, and a third radiating portion 1122 connected to the other side of the first radiating portion 1120, where the current direction of the second radiating portion 1121 and the current direction of the first side 1104 on the second coupling gap side are the same, so that the magnetic symmetry of the second coupling gap and the current direction of the second side 1105 on the third coupling gap side are improved, the magnetic symmetry of the third coupling gap and the third coupling gap circumference side are improved, and the radiation efficiency of the antenna assembly 1 is ensured, and the cross polarization of the first radiating group 11 is further reduced, so that in the application scenario of the first radiating group 11 in the angle of arrival measurement, the convergence of the phase difference curve between other radiating groups is further improved, and the accuracy of the angle of arrival measurement of the antenna assembly 1 is more beneficial to improvement.
Alternatively, as shown in fig. 9, the second radiation portion 1121 and the third radiation portion 1122 are symmetrical about a line connecting a center point of the first ground side 1101 and a center point of the first free side 1103 of the first antenna radiator 110. The line between the center point of the first ground edge 1101 and the center point of the first free edge 1103 of the first antenna radiator 110 may refer to the line M in fig. 9. The symmetry of the second radiation portion 1121 and the third radiation portion 1122 about the line between the center point of the first ground side 1101 and the center point of the first free side 1103 can be understood as that the size of the second radiation portion 1121 is the same as the size of the third radiation portion 1122, and the interval between the center of the second radiation portion 1121 and the center line of the first antenna radiator 110 in the X-axis direction is equal to the interval between the center of the third radiation portion 1122 and the center line of the first antenna radiator 110 in the X-axis direction. In one possible embodiment, the second radiation portion 1121 may have a size of 5mm in the X-axis direction, and the second radiation portion 1121 may have a size of 1mm in the Y-axis direction; the third radiation portion 1122 may have a size of 5mm in the X-axis direction, and the third radiation portion 1122 may have a size of 1mm in the Y-axis direction.
Optionally, the second coupling gap has the same size as the third coupling gap. In one possible embodiment, the dimensions of the second coupling gap and the third coupling gap may both be 0.4mm.
By grounding the first radiation portion 1120, the second radiation portion 1121, the third radiation portion 1122 are symmetrical about the line between the center point of the first grounding edge 1101 and the center point of the first free edge 1103, and the size of the second coupling gap is the same as the size of the third coupling gap, the symmetry of the first radiation group 11 can be improved, thereby improving the pattern symmetry of the first radiation group 11.
Referring to fig. 10 and 11, in one possible embodiment, the at least one second grounding point 112a includes a first sub-grounding point 112b and a second sub-grounding point 112c, where the first sub-grounding point 112b and the second sub-grounding point 112c are respectively located at two ends of the first radiating portion 1120. In this embodiment, the processing technology of the first radiation branch 112 is simple and easy to implement.
In another possible embodiment, as shown in fig. 12, the at least one second ground point 112a includes a first sub-ground point 112b, a second sub-ground point 112c, and at least one third sub-ground point 112d located between the first sub-ground point 112b and the second sub-ground point 112 c. In the present embodiment, the electrical connection relationship between the first radiating stub 112 and the ground layer 10 is reliable and stable.
In yet another possible embodiment, as shown in fig. 13, the first radiating branch 112 further includes a fourth radiating portion 1123. The fourth radiation portion 1123 is made of an electrically conductive material. For example: the fourth radiation portion 1123 may be made of metal, alloy, or the like. The material of the fourth radiation portion 1123 may be the same as or different from that of the first radiation portion 1120. The fourth radiating portion 1123 is connected between an end of the second radiating portion 1121 remote from the first radiating portion 1120 and an end of the third radiating portion 1122 remote from the first radiating portion 1120. The fourth radiation portion 1123 and the second radiation portion 1121 may be integrally connected or may be separately connected. The fourth radiation portion 1123 and the third radiation portion 1122 may be integrally connected or may be separately connected. The fourth radiation portion 1123 is connected to the second radiation portion 1121 and the third radiation portion 1122 and is naturally turned on. The fourth radiating portion 1123 is located on a side of the first ground edge 1101 of the first antenna radiator 110 facing away from the first free edge 1103. The fourth radiation portion 1123 is disposed opposite to the first radiation portion 1120 in the X-axis direction. It can be appreciated that in the present embodiment, the first radiating portion 1120, the second radiating portion 1121, the third radiating portion 1122, and the fourth radiating portion 1123 form the first radiating branch 112 of a frame shape. A fourth coupling gap is formed between the fourth radiating portion 1123 and the first ground edge 1101. It will be appreciated that the fourth radiating portion 1123 is spaced apart from the first ground edge 1101, and the fourth radiating portion 1123 is spaced apart from the first ground edge 1101 by a distance such that the fourth radiating portion 1123 may be electrically or electromagnetically coupled to the first ground edge 1101. The fourth coupling gap may be referred to as L4 in fig. 13.
By making the first radiating branch 112 further include a fourth radiating portion 1123, where the fourth radiating portion 1123 is connected between an end of the second radiating portion 1121 away from the first radiating portion 1120 and an end of the third radiating portion 1122 away from the first radiating portion 1120, a fourth coupling gap is formed between the fourth radiating portion 1123 and the first ground 1101 of the first antenna radiator 110, so that the fourth radiating portion 1123 participates in radiation, thereby further improving the radiation performance of the first radiating group 11 and improving the gain of the antenna assembly 1. In addition, the inclusion of the fourth radiating portion 1123 in the first radiating branch 112 is also advantageous for improving the symmetry of the first radiating group 11, improving the pattern symmetry of the first radiating group 11.
In one possible embodiment, as shown in fig. 14, the antenna assembly 1 further comprises a first feed 13. One end of the first feeding element 13 is electrically connected to the first feeding point 1102, and the other end of the first feeding element 13 penetrates through the ground layer 10 and is used for electrically connecting to the radio frequency signal source 30. The first power feeding member 13 may be a metal probe, a metal spring, or the like. In the present embodiment, the first antenna radiator 110 and the radio frequency signal source 30 are electrically connected through the first feeding member 13, which is advantageous in reducing the size of the antenna assembly 1 in the XY plane.
In another possible embodiment, as shown in fig. 15, the antenna assembly 1 further comprises a second feed 14. One end of the second feeding member 14 is electrically connected to the first feeding point 1102, and the other end of the second feeding member 14 extends beyond the first antenna radiator 110 via the side of the first ground edge 1101 and is electrically connected to the radio frequency signal source 30. The second feeding member 14 may be a microstrip line, a coaxial line, or the like. In the present embodiment, the first antenna radiator 110 and the rf signal source 30 are electrically connected by the second feeding member 14, and the structure is simple, and the position restriction on the rf signal source 30 is low.
In one embodiment, the dimension of the first antenna radiator 110 of the antenna assembly 1 along the X-axis direction is 4.6mm, the dimension of the first antenna radiator 110 along the Y-axis direction is 5mm, the dimension of the first radiating branch 112 along the X-axis direction is 5.3mm, the dimension of the first radiating branch 112 along the Y-axis direction is 7.8mm, the first coupling gap is 0.5mm, and the second coupling gap and the third coupling gap are both 0.4mm. The distance between the first radiation group 11 and the ground layer 10 in the Z-axis direction is approximately 0.5mm. Fig. 16 is a return loss curve of the antenna assembly 1 according to the present embodiment, and it can be seen from fig. 16 that the bandwidth of the antenna assembly 1 provided by the present embodiment is relatively wide, and the center frequency of the antenna assembly 1 includes 8GHz. Fig. 17 is a radiation efficiency curve of the antenna assembly 1 of the present embodiment, and it can be seen from fig. 17 that the radiation efficiency of the antenna assembly 1 of the present embodiment is high. Fig. 18 is a radiation pattern of a conventional PIFA antenna, fig. 19 is a radiation pattern of the antenna assembly 1 of the present embodiment, and comparing fig. 18 and 19, it can be seen that one end of the conventional PIFA antenna is grounded, resulting in serious deflection of the antenna pattern, the main beam deviates 17 ° from the normal direction, and the 3dB beam width of the E-plane is 86.8 °, while the antenna assembly 1 of the present embodiment makes the E-plane pattern symmetrical by introducing the first radiation branch 112, and meanwhile, the 3dB beam width of the E-plane is 95.7 ° better than that of the conventional PIFA antenna. Fig. 20 is a schematic diagram of comparing the polarization ratio direction of the antenna assembly 1 (right diagram) of the present embodiment with that of the conventional PIFA antenna (left diagram), and it can be seen from fig. 20 that the antenna assembly 1 of the present embodiment has a wider coverage range of polarization ratio of more than 10dB compared with the conventional PIFA antenna. Fig. 21 is a main polarization pattern (left image) of the E-plane and a main polarization (1-line) pattern and a cross polarization (2-line) pattern (right image) of the H-plane of the antenna assembly 1 provided in this embodiment, and it can be seen from fig. 21 that the cross polarization of the H-plane of the antenna assembly 1 of this embodiment is low. Fig. 22 shows a current distribution diagram of the antenna assembly 1 provided in this embodiment, as can be seen from fig. 22, the second radiation portion 1121 has the same current direction on the second coupling gap side as the first side 1104, and the third radiation portion 1122 has the same current direction on the third coupling gap side as the second side 1105, so that the magnetic symmetry of the second coupling gap and the second coupling gap side can be improved, and the magnetic symmetry of the third coupling gap and the third coupling gap side can be improved.
Further, referring to fig. 23 and 24, the antenna assembly 1 further includes a second radiation set 15. The second radiation group 15 is laminated with the ground layer 10 and is disposed at a spacing. The second radiation group 15 and the first radiation group 11 may be arranged in the same layer, or may be arranged in a staggered manner in a direction (i.e., Z-axis direction in the embodiment of the present application) in which they are stacked with the ground layer 10. In this embodiment, the second radiation group 15 and the first radiation group 11 are disposed in the same layer, that is, the second radiation group 15 and the first radiation group 11 may be disposed on the same surface of the dielectric substrate 12. The second radiation group 15 is arranged at intervals along the first target direction from the first radiation group 11. In this embodiment, the first target direction may refer to the X-axis direction in fig. 23, and is directly described as the first target direction X in the following embodiment. The first target direction X is also the width direction of the electronic device 100. In this embodiment, the second radiation group 15 and the first radiation group 11 are arranged at intervals along the first target direction X, and the first radiation group 11 and the second radiation group 15 form a horizontal angle-measuring antenna group that can be used to measure the azimuth angle in the arrival angle of the electromagnetic wave signal. Of course, in other embodiments, the first target direction may also be the length direction of the electronic device 100, i.e. the Y-axis direction, and the second radiation group 15 and the first radiation group 11 form a vertical angle-measuring antenna group, which may be used to measure the pitch angle in the angle of arrival of the electromagnetic wave signal. It will be appreciated that the first radiation set 11 and the second radiation set 15 are combined and form a goniometric antenna set that may be used to achieve two-dimensional goniometry.
The second radiation group 15 includes a second antenna radiator 150. The material of the second antenna radiator 150 is a conductive material. For example: the material of the second antenna radiator 150 may be metal, alloy, or the like. The material of the second antenna radiator 150 may be the same as or different from that of the first antenna radiator 110. The second antenna radiator 150 may operate in a quarter wavelength resonant mode. The second antenna radiator 150 includes a second feed point 1501. The second feed point 1501 is used to electrically connect the radio frequency signal source 30. The second antenna radiator 150 and the first antenna radiator 110 may be electrically connected to the same rf signal source 30, or may be connected to different rf signal sources 30. The second feeding point 1501 and the rf signal source 30 may be electrically connected through a microstrip line, a coaxial line, a probe, a spring, etc. It will be appreciated that the second feeding point 1501 of the second antenna radiator 150 is electrically connected to the rf signal source 30, and can directly obtain the rf signal from the rf signal source 30 to realize feeding. In other words, the radio frequency signal source 30 may excite a corresponding resonance in the second antenna radiator 150 via the second feed point 1501.
In one possible embodiment, as shown in fig. 23, the second antenna radiator 150 is a patch antenna radiator. The shape of the second antenna radiator 150 may be circular, elliptical, triangular, square, rectangular, other polygonal, various abnormal shapes, etc. In this embodiment, a rectangular second antenna radiator 150 is taken as an example. The second antenna radiator 150 is not electrically connected to the ground layer 10, at this time, the current of the second antenna radiator 150 is uniformly distributed, the cross polarization is smaller, and the arrival angle of the electromagnetic wave signal measured when the second antenna radiator 150 is combined with the first radiation group 11 to form the angle measurement antenna group is more accurate.
In another possible embodiment, as shown in fig. 24, the second antenna radiator 150 may be understood as a planar inverted-F antenna radiator. The second antenna radiator 150 also includes a second ground edge 1502, a second free edge 1503, a third side 1504, and a fourth side 1505. The second ground edge 1502, the second feed point 1501 and the second free edge 1503 are arranged in sequence. The third side 1504 is connected between one end of the second ground 1502 and one end of the second free side 1503. Fourth side 1505 is connected between the other end of second ground side 1502 and the other end of second free side 1503. In this embodiment, the second ground edge 1502, the second feeding point 1501 and the second free edge 1503 are sequentially arranged along the X-axis direction. Of course, in other embodiments, the second ground edge 1502, the second feed point 1501, and the second free edge 1503 may be arranged in sequence along the Y-axis direction. The second ground plane 1502 includes at least one third ground point 150a, and the at least one third ground point 150a is electrically connected to the ground layer 10. The number of the third grounding points 150a is not particularly limited, and the third grounding points 150a arranged at a plurality of intervals are exemplified in the following embodiments. Of course, in other embodiments, the number of the third grounding points 150a may be one, and when the number of the third grounding points 150a is smaller, the structure of the second radiation group 15 is simple and the processing is convenient. The third ground point 150a and the ground layer 10 may be electrically connected by a microstrip line, a coaxial line, a probe, a spring, or the like. The second free edge 1503 may be understood as the edge of the second antenna radiator 150 that is not directly electrically connected to other components.
The second radiation group 15 further comprises a second radiation branch 151. The second radiation branch 151 is made of conductive material. For example: the material of the second radiation branch 151 may be metal, alloy, or the like. The material of the second radiating stub 151 may be the same as or different from that of the second antenna radiator 150. The second radiation stub 151 may be used to generate a quarter wavelength resonant mode. The second radiation branch 151 includes a fifth radiation portion 1510. The fifth radiation portion 1510 is made of a conductive material. For example: the fifth radiation portion 1510 may be made of metal, alloy, or the like. The fifth radiating portion 1510 is located on a side of the second free edge 1503 facing away from the second ground edge 1502, and a fifth coupling gap is formed between the fifth radiating portion 1510 and the second free edge 1503. It will be appreciated that the fifth radiating portion 1510 is spaced apart from the second free edge 1503, and that the fifth radiating portion 1510 is spaced apart from the second free edge 1503 by a distance such that the fifth radiating portion 1510 is electrically or electromagnetically coupled to the second free edge 1503. The fifth coupling gap may be referred to as L5 in fig. 24. The fifth radiation portion 1510 includes at least one fourth ground point 151a, and the at least one fourth ground point 151a is electrically connected to the ground layer 10. The number of the fourth grounding points 151a is not particularly limited, and the fourth grounding points 151a arranged at a plurality of intervals are exemplified in the following embodiments. Of course, in other embodiments, the number of fourth grounding points 151a may be one. The fourth ground point 151a and the ground layer 10 may be electrically connected by a microstrip line, a coaxial line, a probe, a spring, or the like.
The antenna assembly 1 provided in this embodiment includes a ground layer 10, a first radiation group 11 and a second radiation group 15, and the combination of the first radiation group 11 and the second radiation group 15 can be used to implement two-dimensional angle measurement. The second radiation group 15 includes a second antenna radiator 150 and a second radiation branch 151, since the second antenna radiator 150 includes a second grounding edge 1502, a second feeding point 1501 and a second free edge 1503 sequentially arranged, the second grounding edge 1502 includes at least one third grounding point 150a, at least one third grounding point 150a is electrically connected to the ground layer 10, so that the current of the second grounding edge 1502 is stronger, the second free edge 1503 is not grounded, therefore, the electric field of the second free edge 1503 is stronger, the current is weaker, resulting in uneven current distribution of the second antenna radiator 150, the symmetry is worse, the second radiation branch 151 includes a fifth radiation portion 1510, the fifth radiation portion 1510 is located at one side of the second free edge 1502, and a fifth coupling gap is formed between the fifth radiation portion 1510 and the second free edge 1503, that is, the fifth radiation portion 1510 is electrically coupled with the second free edge 1503, the fifth radiation portion includes at least one fourth grounding point a, at least one fourth grounding point 151a is electrically connected to the second free edge 1503, so that the second radiation portion 151 has a has higher current-measuring accuracy, and the second radiation group 15 has higher current-phase difference, the current-measuring angle of the second radiation group 15 can reach a higher current-measuring angle of the second radiation group 15, and a higher current-phase difference measuring angle of the second radiation group has higher than that the first radiation angle 15, and has higher current-measuring angle of the second radiation angle 15, and has higher current-measuring angle of the group has higher current-measuring angle-phase-measuring angle of the second radiation angle 15.
Referring to fig. 25 to 27, the third side 1504 is opposite to the fourth side 1505. In the embodiment of the present application, the third side 1504 and the fourth side 1505 are disposed opposite to each other along the Y-axis direction.
In one possible embodiment, the second radiating stub 151 further includes a sixth radiating portion 1511 and/or a seventh radiating portion 1512. The sixth radiation portion 1511 is made of a conductive material. For example: the sixth radiation portion 1511 may be made of a metal, an alloy, or the like. The sixth radiation portion 1511 may be the same as or different from the fifth radiation portion 1510. The seventh radiating portion 1512 is made of a conductive material. For example: the seventh radiating portion 1512 may be made of metal, alloy, or the like. The seventh radiating portion 1512 may be the same or different from the fifth radiating portion 1510. One end of the sixth radiating portion 1511 is connected to the fifth radiating portion 1510, and the other end extends toward the side of the second antenna radiator 150. In other words, the sixth radiation portion 1511 is bent and connected with the fifth radiation portion 1510. One end of the seventh radiating portion 1512 is connected to the fifth radiating portion 1510, and the other end extends toward the side of the second antenna radiator 150. In other words, the seventh radiating portion 1512 is bent and connected to the fifth radiating portion 1510. The connection between the sixth radiation portion 1511 and the fifth radiation portion 1510 may be an integral connection or a split connection. The sixth radiation portion 1511 is connected to the fifth radiation portion 1510 and then naturally turns on. The seventh radiating portion 1512 and the fifth radiating portion 1510 may be integrally connected or may be separately connected. The seventh radiating portion 1512 is connected to the fifth radiating portion 1510 and is naturally turned on. The sixth radiating portion 1511 is disposed opposite the third side 1504, and a sixth coupling gap is formed between the sixth radiating portion 1511 and the third side 1504. It will be appreciated that the sixth radiating portion 1511 is spaced from the third side 1504, and that the sixth radiating portion 1511 is spaced from the third side 1504 by a distance such that the sixth radiating portion 1511 can be electrically or electromagnetically coupled to the third side 1504. The sixth coupling gap may be referred to as L6 in fig. 25. The seventh radiating portion 1512 is disposed opposite the fourth side 1505, and a seventh coupling gap is formed between the seventh radiating portion 1512 and the fourth side 1505. It will be appreciated that the seventh radiating portion 1512 is spaced from the fourth side 1505, and that the seventh radiating portion 1512 is spaced from the fourth side 1505 by a distance such that the seventh radiating portion 1512 and the fourth side 1505 may be electrically or electromagnetically coupled. The seventh coupling gap may be referred to as L7 in fig. 26. The seventh radiating portion 1512 is disposed opposite to the sixth radiating portion 1511 in the Y-axis direction. It can be appreciated that in the present embodiment, the fifth radiating portion 1510, the sixth radiating portion 1511 and the seventh radiating portion 1512 form a second radiating branch 151 having a substantially U shape.
By making the second radiating branch 151 further include a sixth radiating portion 1511 and/or a seventh radiating portion 1512, one end of the sixth radiating portion 1511 is connected to the fifth radiating portion 1510, the other end extends toward the side of the second antenna radiator 150, one end of the seventh radiating portion 1512 is connected to the fifth radiating portion 1510, the other end extends toward the side of the second antenna radiator 150, a sixth coupling gap is formed between the sixth radiating portion 1511 and the third side 1504 of the second antenna radiator 150, so that the sixth radiating portion 1511 participates in radiation, and a seventh coupling gap is formed between the seventh radiating portion 1512 and the fourth side 1505 of the second antenna radiator 150, so that the seventh radiating portion 1512 participates in radiation, thereby improving the radiation performance of the second radiating group 15 and improving the gain of the antenna assembly 1. In addition, the second radiating branch 151 includes a fifth radiating portion 1510, a sixth radiating portion 1511 connected to one side of the fifth radiating portion 1510, and a seventh radiating portion 1512 connected to the other side of the fifth radiating portion 1510, where the current directions of the sixth radiating portion 1511 and the third side 1504 are the same, so that the magnetic flow symmetry of the sixth coupling gap and the circumferential side of the sixth coupling gap is improved, the current directions of the seventh radiating portion 1512 and the fourth side 1505 are the same, the magnetic flow symmetry of the seventh coupling gap and the circumferential side of the seventh coupling gap is improved, and the cross polarization of the second radiating group 15 can be further reduced while the radiation efficiency of the antenna assembly 1 is ensured, so that in the application scenario where the angle of arrival measurement is performed by the second radiating group 15, the convergence of the phase difference curve between the second radiating group 15 and the first radiating group 11 is further improved, and the accuracy of the angle of arrival measurement by the antenna assembly 1 is more beneficial to be improved.
Optionally, the sixth coupling gap has a size greater than or equal to 0.2mm and less than or equal to 1.5mm. The smaller the size of the sixth coupling gap, the stronger the magnetic flow of the second radiation set 15 in the sixth coupling gap, and the smaller the cross polarization of the second radiation set 15, the more remarkable the effect on improving the angular accuracy of the antenna assembly 1. It will be appreciated that by making the size of the sixth coupling gap greater than or equal to 0.2mm and less than or equal to 1.5mm, the effect of reducing the cross polarization of the second radiation group 15 can be improved, thereby further contributing to the improvement of the accuracy of the angle of arrival measurement by the antenna assembly 1. The size of the sixth coupling gap may be the same as or different from the size of the fifth coupling gap.
Optionally, the seventh coupling gap has a size greater than or equal to 0.2mm and less than or equal to 1.5mm. The smaller the size of the seventh coupling gap, the stronger the magnetic flow of the second radiation set 15 in the seventh coupling gap, and the smaller the cross polarization of the second radiation set 15, the more remarkable the effect on improving the angular accuracy of the antenna assembly 1. It will be appreciated that by making the size of the sixth coupling gap greater than or equal to 0.2mm and less than or equal to 1.5mm, the effect of reducing the cross polarization of the second radiation group 15 can be improved, thereby further contributing to the improvement of the accuracy of the angle of arrival measurement by the antenna assembly 1. The size of the seventh coupling gap may be the same as or different from the size of the fifth coupling gap.
Alternatively, in embodiments in which the second radiating stub 151 includes a sixth radiating portion 1511 and a seventh radiating portion 1512, the sixth radiating portion 1511, the seventh radiating portion 1512 may be symmetrical about a line connecting a center point of the second ground edge 1502 and a center point of the second free edge 1503. The line between the center point of the second ground edge 1502 and the center point of the second free edge 1503 may refer to line N in fig. 27. The connection between the center point of the sixth radiating portion 1511 and the seventh radiating portion 1512 with respect to the second ground edge 1502 and the center point of the second free edge 1503 may be understood as the size of the sixth radiating portion 1511 is the same as the size of the seventh radiating portion 1512. In one possible embodiment, the size of the sixth radiating portion 1511 in the X-axis direction may be 5mm, and the size of the sixth radiating portion 1511 in the Y-axis direction may be 1mm; the seventh radiating portion 1512 may have a size of 5mm in the X-axis direction, and the seventh radiating portion 1512 may have a size of 1mm in the Y-axis direction.
Optionally, the size of the sixth coupling gap is the same as the size of the seventh coupling gap. In one possible embodiment, the size of the sixth coupling gap and the size of the seventh coupling gap may be 0.4mm.
By making the sixth radiation portion 1511, the seventh radiation portion 1512 symmetrical about the line between the center point of the second ground edge 1502 and the center point of the second free edge 1503, the size of the sixth coupling gap is the same as the size of the seventh coupling gap, the symmetry of the first radiation group 11 can be improved, thereby improving the pattern symmetry of the first radiation group 11.
In one possible embodiment, referring to fig. 28 and 29, the first radiation set 11 and the second radiation set 15 are symmetrical about a perpendicular bisector of a line connecting the first radiation set 11 and the second radiation set 15 along the first target direction. In other words, the first radiation group 11 is arranged in mirror image with the second radiation group 15. Specifically, the first radiating portion 1120, the first free edge 1103, the first ground edge 1101, the second ground edge 1502, the second free edge 1503, and the fifth radiating portion 1510 are sequentially arranged along the first target direction; alternatively, the first ground edge 1101, the first free edge 1103, the first radiating portion 1120, the fifth radiating portion 1510, the second free edge 1503, and the second ground edge 1502 are sequentially arranged along the first target direction. By arranging the first radiation set 11 and the second radiation set 15 in mirror image, it is advantageous to reduce the size of the antenna assembly 1 in the X-axis direction, so that the distance between the phase center of the first radiation set 11 and the phase center of the second radiation set 15 is further.
In another possible embodiment, referring to fig. 30 and 31, the first radiating portion 1120, the first free edge 1103, the first ground edge 1101, the fifth radiating portion 1510, the second free edge 1503 and the second ground edge 1502 are sequentially arranged along the first target direction; alternatively, the first ground side 1101, the first free side 1103, the first radiating portion 1120, the second ground side 1502, the second free side 1503, and the fifth radiating portion 1510 are sequentially arranged along the first target direction. In other words, the first radiation group 11 and the second radiation group 15 are sequentially arranged.
Further, referring to fig. 32 to 34, the antenna assembly 1 further includes a third radiation set 16. The third radiation group 16 is laminated with the ground layer 10 and is disposed at a spacing. The third radiation group 16 may be provided in the same layer as the first radiation group 11 and the second radiation group 15, or may be provided in a direction (in the Z-axis direction in the embodiment of the present application) overlapping the ground layer 10. In this embodiment, the third radiation group 16 and the first radiation group 11 are disposed in the same layer, that is, the third radiation group 16 and the first radiation group 11 may be disposed on the same surface of the dielectric substrate 12. The third radiation group 16 is spaced apart from the first radiation group 11 along the second target direction, or the third radiation group 16 is spaced apart from the second radiation group 15 along the second target direction. The second target direction may be referred to as the Y-axis direction in fig. 32, and is directly described as the second target direction Y in the following embodiments. The second target direction Y is also the longitudinal direction of the electronic device 100. In one possible embodiment, as shown in fig. 32, the third radiation group 16 is spaced apart from the first radiation group 11 along the second target direction Y, and the third radiation group 16 and the first radiation group 11 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 another possible embodiment, as shown in fig. 33, the third radiation group 16 and the second radiation group 15 may be arranged at intervals along the second target direction Y, and the third radiation group 16 and the second radiation group 15 form a vertical angle-measuring antenna group, which may be used to measure a pitch angle in an arrival angle of an electromagnetic wave signal. In the two embodiments, the first radiation group 11 and the second radiation group 15 form a horizontal angle measurement antenna group, and the third radiation group 16 forms a vertical angle measurement antenna group with one of the first radiation group 11 and the second radiation group 15, so that three-dimensional angle measurement can be realized. Of course, in other embodiments, as shown in fig. 34, the second target direction may also be the width direction of the electronic device 100, i.e. the X-axis direction, and at this time, the third radiation group 16 and the first radiation group 11 may also form a horizontal angle-measuring antenna group, which may be used to measure an azimuth angle in an arrival angle of an electromagnetic wave signal, and the third radiation group 16 and the second radiation group 15 may also form a horizontal angle-measuring antenna group, which may be used to measure an azimuth angle in an arrival angle of an electromagnetic wave signal, so as to be beneficial to calculate an average value thereof according to arrival angles measured by multiple horizontal angle-measuring antenna groups, so as to improve two-dimensional angle-measuring accuracy. In this embodiment, the second target direction is the same as or opposite to the first target direction. The third radiating group 16 includes a third antenna radiator 160. The third antenna radiator 160 is made of conductive material. For example: the third antenna radiator 160 may be made of metal, alloy, or the like. The material of the third antenna radiator 160 may be the same as or different from that of the first antenna radiator 110. The third antenna radiator 160 may operate in a quarter-wavelength resonant mode. The third antenna radiator 160 includes a third feed point 1601. The third feeding point 1601 is electrically connected to the radio frequency signal source 30. The third feeding point 1601 and the rf signal source 30 may be electrically connected through a microstrip line, a coaxial line, a probe, a spring, etc. It will be appreciated that the third feeding point 1601 of the third antenna radiator 160 is electrically connected to the rf signal source 30, and may directly obtain the rf signal from the rf signal source 30 to realize feeding. In other words, the radio frequency signal source 30 may excite a corresponding resonance in the third antenna radiator 160 through the third feeding point 1601.
In one possible embodiment, referring to fig. 32 to 34, the third antenna radiator 160 is a patch antenna radiator. The third antenna radiator 160 may have a shape of a circle, an ellipse, a triangle, a square, a rectangle, other polygons, various abnormal shapes, and the like. In this embodiment, a rectangular third antenna radiator 160 is taken as an example. The third antenna radiator 160 is not electrically connected to the ground layer 10, at this time, the current distribution of the third antenna radiator 160 is uniform, the cross polarization is small, and the measured arrival angle of the electromagnetic wave signal is accurate when the third antenna radiator 160 is combined with the first radiation group 11 or the second radiation group 15 to form an angle measurement antenna group.
The following embodiment takes the third radiation group 16 and the first radiation group 11 arranged at intervals along the second target direction Y as an example, and describes in detail another third antenna radiator 160 provided in the present application.
In another possible embodiment, as shown in fig. 35, the third antenna radiator 160 may be understood as a planar inverted-F antenna radiator. The third antenna radiator 160 also includes a third ground side 1602 and a third free side 1603. The third ground side 1602, the third feeding point 1601, and the third free side 1603 are arranged in sequence. In the embodiment of the present application, the third grounding edge 1602, the third feeding point 1601, and the third free edge 1603 are sequentially arranged along the X-axis direction. Of course, in other embodiments, the third ground side 1602, the third feeding point 1601, and the third free side 1603 may be sequentially arranged along the Y-axis direction. The third ground side 1602 includes at least one fifth ground point 160a, and the at least one fifth ground point 160a is electrically connected to the ground layer 10. The number of the fifth grounding points 160a is not particularly limited, and the fifth grounding points 160a arranged at a plurality of intervals are exemplified in the following embodiments. Of course, in other embodiments, the number of fifth grounding points 160a may be one. The fifth ground point 160a and the ground layer 10 may be electrically connected by a microstrip line, a coaxial line, a probe, a spring, or the like. The third free edge 1603 may be understood as an edge of the third antenna radiator 160 that is not directly electrically connected to other components.
Third radiating group 16 also includes a third radiating branch 161. The third radiating branch 161 is made of conductive material. For example: the third radiation branch 161 may be made of metal, alloy, or the like. The material of the third radiating branch 161 may be the same as or different from that of the third antenna radiator 160. The third radiating stub 161 may be used to create a quarter wavelength resonant mode. The third radiating branch 161 includes an eighth radiating portion 1610. The eighth radiating portion 1610 is made of a conductive material. For example: the eighth radiating portion 1610 may be made of metal, alloy, or the like. The eighth radiating portion 1610 is located on a side of the third free edge 1603 facing away from the third ground edge 1602, and an eighth coupling gap is formed between the eighth radiating portion 1610 and the third free edge 1603. It will be appreciated that the eighth radiating portion 1610 is spaced apart from the third free edge 1603, and that the spacing distance between the eighth radiating portion 1610 and the third free edge 1603 is such that the eighth radiating portion 1610 may be electrically or electromagnetically coupled to the third free edge 1603. The eighth coupling gap may be referred to as L8 in fig. 35. The eighth radiating portion 1610 includes at least one sixth ground point 161a, and the at least one sixth ground point 161a is electrically connected to the ground layer 10. The number of the sixth ground points 161a is not particularly limited, and the sixth ground points 161a arranged at a plurality of intervals are exemplified in the following embodiments. Of course, in other embodiments, the number of sixth grounding points 161a may be one. The sixth ground point 161a and the ground layer 10 may be electrically connected by a microstrip line, a coaxial line, a probe, a spring, or the like. It will be appreciated that the third radiating stub 161 is coupled to the third free edge 1603 of the third antenna radiator 160, so that the third radiating stub 161 may acquire radio frequency signals from the third antenna radiator 160 to effect feeding.
The antenna assembly 1 provided in this embodiment includes a first radiation group 11, a second radiation group 15 and a third radiation group 16, and the combination of the first radiation group 11, the second radiation group 15 and the third radiation group 16 can be used to implement three-dimensional angle measurement. Wherein the third radiating group 16 includes the third antenna radiator 160 and the third radiating branch 161, since the third antenna radiator 160 includes the third grounding side 1602, the third feeding point 1601 and the third free side 1603 sequentially arranged, the third grounding side 1602 includes at least one fifth grounding point 160a, at least one fifth grounding point 160a is electrically connected to the grounding layer 10, the current of the third grounding side 1602 is stronger, the third free side 1603 is not grounded, the electric field of the third free side 1603 is stronger, the current is weaker, resulting in uneven current distribution of the third antenna radiator 160, poor symmetry, and the third radiating branch 161 includes the eighth radiating portion 1610, the eighth radiating portion 1610 is located at a side of the third free side 1603 facing away from the third grounding side 160, and an eighth coupling gap is formed between the eighth radiating portion 1610 and the third free side 1603, i.e., the eighth radiating portion 1610 is coupled with the third free side 1603, the eighth radiating portion 1610 includes at least one sixth grounding point 161a, and the at least one sixth grounding point 161a is electrically connected to the ground layer 10, so that the current of the eighth radiating portion 1610 is stronger, which can promote the uniformity and symmetry of the current distribution of the whole third radiating group 16, so that the third radiating group 16 has lower cross polarization, and in an application scenario where the three-dimensional angle-measuring antenna group formed by combining the third radiating group 16, the second radiating group 15 and the first radiating group 11 performs angle measurement, the convergence of the phase difference curve between the third radiating group 16 and the first radiating group 11 is improved, and the convergence of the phase difference curve between the third radiating group 16 and the second radiating group 15 is improved, so that the accuracy of the angle of arrival measured according to the three-dimensional angle-measuring antenna group formed by combining the third radiating group 16, the second radiating group 15 and the first radiating group 11 is higher.
Referring to fig. 36 to 38, the third antenna radiator 160 further includes a fifth side 1604 and a sixth side 1605. Fifth side 1604 is connected between one end of third ground side 1602 and one end of third free side 1603. The sixth side 1605 is connected between the other end of the third grounding side 1602 and the other end of the third free side 1603. Fifth side 1604 is disposed opposite sixth side 1605. In this embodiment, fifth side 1604 and sixth side 1605 are disposed opposite to each other along the Y-axis direction.
In one possible embodiment, third radiating branch 161 further includes a ninth radiating portion 1611 and/or a tenth radiating portion 1612. The ninth radiation portion 1611 is made of a conductive material. For example: the ninth radiation portion 1611 may be made of metal, alloy, or the like. The material of the ninth radiating portion 1611 may be the same as or different from the material of the eighth radiating portion 1610. The tenth radiation portion 1612 is made of a conductive material. For example: the tenth radiation portion 1612 may be made of metal, alloy, or the like. The tenth radiation portion 1612 may be made of the same material as or different from the eighth radiation portion 1610. One end of the ninth radiating portion 1611 is connected to the eighth radiating portion 1610, and the other end extends toward the side of the third antenna radiator 160. In other words, the ninth radiating portion 1611 is bent to connect with the eighth radiating portion 1610. One end of the tenth radiation portion 1612 is connected to the eighth radiation portion 1610, and the other end extends toward the side of the third antenna radiator 160. In other words, the tenth radiating portion 1612 is bent to be connected to the eighth radiating portion 1610. The connection between the ninth radiating portion 1611 and the eighth radiating portion 1610 may be integrally or separately. The ninth radiating portion 1611 is naturally turned on after being connected to the eighth radiating portion 1610. The tenth radiation portion 1612 and the eighth radiation portion 1610 may be integrally connected or may be separately connected. The tenth radiation portion 1612 is naturally turned on after being connected to the eighth radiation portion 1610. Ninth radiating portion 1611 is disposed opposite fifth side 1604, and a ninth coupling gap is formed between ninth radiating portion 1611 and fifth side 1604. It is appreciated that ninth radiating portion 1611 is spaced from fifth side 1604, and that ninth radiating portion 1611 is spaced from fifth side 1604 by a distance such that ninth radiating portion 1611 may be electrically or electromagnetically coupled to fifth side 1604. The ninth coupling gap may be referred to as L9 in fig. 32. The tenth radiating portion 1612 is disposed opposite the sixth side 1605, and a tenth coupling gap is formed between the tenth radiating portion 1612 and the sixth side 1605. It will be appreciated that the tenth radiating portion 1612 is spaced from the sixth side 1605, and the spacing between the tenth radiating portion 1612 and the sixth side 1605 is such that the tenth radiating portion 1612 and the sixth side 1605 may be electrically or electromagnetically coupled. The tenth coupling gap may refer to L10 in fig. 33. The tenth radiation portion 1612 is disposed opposite to the ninth radiation portion 1611 in the Y-axis direction. It can be appreciated that, in the present embodiment, the eighth radiating portion 1610, the ninth radiating portion 1611 and the tenth radiating portion 1612 form a third radiating branch 161 having a substantially U shape.
By making the third radiating branch 161 further include a ninth radiating portion 1611 and/or a tenth radiating portion 1612, one end of the ninth radiating portion 1611 is connected to the eighth radiating portion 1610, the other end extends toward the side of the third antenna radiator 160, one end of the tenth radiating portion 1612 is connected to the eighth radiating portion 1610, the other end extends toward the side of the third antenna radiator 160, a ninth coupling gap is formed between the ninth radiating portion 1611 and the fifth side 1604 of the third antenna radiator 160, so that the ninth radiating portion 1611 participates in radiation, and a tenth coupling gap is formed between the tenth radiating portion 1612 and the sixth side 1605 of the third antenna radiator 160, so that the tenth radiating portion 1612 participates in radiation, thereby improving the radiation performance of the third radiating group 16 and improving the gain of the antenna assembly 1. In addition, the third radiating branch 161 includes an eighth radiating portion 1610, a ninth radiating portion 1611 connected to one side of the eighth radiating portion 1610, and a tenth radiating portion 1612 connected to the other side of the eighth radiating portion 1610, where the current directions of the ninth radiating portion 1611 and the fifth side 1604 are the same, so that the magnetic flow symmetry of the ninth coupling gap and the circumferential side of the ninth coupling gap is improved, the current directions of the tenth radiating portion 1612 and the sixth side 1605 are the same, the magnetic flow symmetry of the tenth coupling gap and the circumferential side of the tenth coupling gap is improved, the radiation efficiency of the antenna assembly 1 is ensured, and the cross polarization of the third radiating group 16 can be further reduced, so that in the application scenario of measuring the arrival angle of the third radiating group 16, the convergence of the phase difference curve between the third radiating group 16 and the first radiating group 11 and the second radiating group 15 is further improved, and the accuracy of measuring the arrival angle of the antenna assembly 1 is more favorable.
Optionally, the size of the ninth coupling gap is greater than or equal to 0.2mm and less than or equal to 1.5mm. The smaller the size of the ninth coupling gap, the stronger the magnetic flow of the third radiation set 16 in the ninth coupling gap, and the smaller the cross polarization of the third radiation set 16, the more significant the effect on improving the angular accuracy of the antenna assembly 1. It will be appreciated that by making the size of the ninth coupling gap greater than or equal to 0.2mm and less than or equal to 1.5mm, the effect of reducing the cross polarization of the third radiation group 16 can be improved, thereby further contributing to the improvement of the accuracy of the angle of arrival measured by the antenna assembly 1. The size of the ninth coupling gap may be the same as or different from the size of the eighth coupling gap.
Optionally, the tenth coupling gap has a size greater than or equal to 0.2mm and less than or equal to 1.5mm. The smaller the size of the tenth coupling gap, the stronger the magnetic flow of the third radiation group 16 in the tenth coupling gap, and the smaller the cross polarization of the third radiation group 16, the more remarkable the effect on improving the angular accuracy of the antenna assembly 1. It will be appreciated that by making the size of the ninth coupling gap greater than or equal to 0.2mm and less than or equal to 1.5mm, the effect of reducing the cross polarization of the third radiation group 16 can be improved, thereby further contributing to the improvement of the accuracy of the angle of arrival measured by the antenna assembly 1. The size of the tenth coupling gap may be the same as or different from the size of the eighth coupling gap.
Alternatively, in an embodiment in which the third radiating branch 161 includes the ninth radiating portion 1611 and the tenth radiating portion 1612, the ninth radiating portion 1611 and the tenth radiating portion 1612 are symmetrical about the center line of the third antenna radiator 160. The center line of the third antenna radiator 160 may be referred to as G line in fig. 38. The ninth radiating portion 1611, the tenth radiating portion 1612 may be understood as being symmetrical about the center line of the third antenna radiator 160, with the dimensions of the ninth radiating portion 1611 being identical to those of the tenth radiating portion 1612. In one possible embodiment, the size of the ninth radiating portion 1611 in the X-axis direction may be 5mm, and the size of the ninth radiating portion 1611 in the Y-axis direction may be 1mm; the size of the tenth radiation portion 1612 in the X-axis direction may be 5mm, and the size of the tenth radiation portion 1612 in the Y-axis direction may be 1mm.
Optionally, the size of the ninth coupling gap is the same as the size of the tenth coupling gap. In one possible embodiment, the size of the ninth coupling gap and the size of the tenth coupling gap may be both 0.4mm.
By making the ninth radiating portion 1611, the tenth radiating portion 1612 symmetrical about the center line of the third antenna radiator 160, the size of the ninth coupling gap is the same as the size of the tenth coupling gap, the symmetry of the first radiation group 11 can be improved, thereby improving the pattern symmetry of the first radiation group 11.
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 assembly 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 (20)

1. An antenna assembly, comprising:
a ground layer; and
The first radiation group, with the stratum stack sets up and the interval, the first radiation group includes first antenna radiator and first radiation branch, the first antenna radiator includes first earth connection, first feed point, first free limit, first side and second side, first earth connection first feed point with first free limit arranges in proper order, first side connect in between the one end of first earth connection and the one end of first free limit, the second side connect in between the other end of first earth connection and the other end of first free limit, first earth connection includes at least one first earth connection, at least one first earth connection electricity connects the earth connection, first feed point is used for the electricity to connect the radio frequency signal source, first radiation branch includes first radiating part, first radiating part is located first free limit deviates from one side of first earth connection, and first radiating part with first free limit forms at least one first earth connection between the first earth connection gap.
2. The antenna assembly of claim 1, wherein the first radiating stub further comprises a second radiating portion, one end of the second radiating portion is connected to the first radiating portion, the other end of the second radiating portion extends toward a side of the first antenna radiator, the second radiating portion is disposed opposite the first side, and a second coupling gap is formed between the second radiating portion and the first side.
3. The antenna assembly of claim 2, wherein the second side is disposed opposite the first side, the first radiating branch further comprises a third radiating portion, one end of the third radiating portion is connected to the first radiating portion, the other end of the third radiating portion extends toward the side of the first antenna radiator, the third radiating portion is disposed opposite the second side, and a third coupling gap is formed between the second radiating portion and the second side.
4. The antenna assembly of claim 3, wherein the second radiating portion and the third radiating portion are symmetrical about a line connecting a center point of the first ground edge and a center point of the first free edge.
5. The antenna assembly of claim 3, wherein the first coupling gap has a dimension greater than or equal to 0.2mm and less than or equal to 1.5mm; the second coupling gap has a size greater than or equal to 0.2mm and less than or equal to 1.5mm; the third coupling gap has a dimension greater than or equal to 0.2mm and less than or equal to 1.5mm.
6. The antenna assembly of claim 3, wherein a size of the second coupling gap is the same as a size of the third coupling gap.
7. The antenna assembly of claim 3, wherein the first radiating stub further comprises a fourth radiating portion connected between an end of the second radiating portion remote from the first radiating portion and an end of the third radiating portion remote from the first radiating portion, the fourth radiating portion being located on a side of the first ground edge remote from the first free edge, and a fourth coupling gap being formed between the fourth radiating portion and the first ground edge.
8. The antenna assembly of any one of claims 1 to 7, wherein the at least one second ground point comprises a first sub-ground point and a second sub-ground point, the first sub-ground point and the second sub-ground point being located at respective ends of the first radiating portion.
9. The antenna assembly of claim 8, wherein the at least one second ground point further comprises at least one third sub-ground point, the at least one third sub-ground point being located between the first sub-ground point and the second sub-ground point.
10. The antenna assembly of any one of claims 1 to 7, further comprising a first feed, one end of the first feed being electrically connected to the first feed point, the other end of the first feed extending through the ground plane and being adapted to be electrically connected to the radio frequency signal source.
11. The antenna assembly of any one of claims 1 to 7, further comprising a second feed, one end of the second feed being electrically connected to the first feed point, the other end of the second feed extending beyond the first antenna radiator through the side of the first ground plane and being adapted to electrically connect to the radio frequency signal source.
12. The antenna assembly of any one of claims 1 to 7, further comprising a second radiating group laminated to and spaced apart from the ground layer, the second radiating group being spaced apart from the first radiating group along a first target direction, the second radiating group comprising a second antenna radiator comprising a second feed point for electrically connecting the radio frequency signal source.
13. The antenna assembly of claim 12, wherein the second antenna radiator further comprises a second ground, a second free edge, a third side and a fourth side, the second ground, the second feed point and the second free edge being arranged in sequence, the third side being connected between one end of the second ground and one end of the second free edge, the fourth side being connected between the other end of the second ground and the other end of the second free edge, the second ground comprising at least one third ground point, the at least one third ground point being electrically connected to the ground layer, the second radiating group further comprising a second radiating stub, the second radiating stub comprising a fifth radiating portion, the fifth radiating portion being located on a side of the second free edge facing away from the second ground, and a fifth coupling gap being formed between the fifth radiating portion and the second free edge, the fifth radiating portion comprising at least one fourth ground point, the fourth ground point being electrically connected to the fourth ground layer.
14. The antenna assembly according to claim 13, wherein the third side is opposite to the fourth side, the second radiating branch further comprises a sixth radiating portion and/or a seventh radiating portion, one end of the sixth radiating portion is connected to the fifth radiating portion, the other end of the sixth radiating portion extends towards the side of the second antenna radiator, the sixth radiating portion is opposite to the third side, a sixth coupling gap is formed between the sixth radiating portion and the third side, one end of the seventh radiating portion is connected to the fifth radiating portion, the other end of the seventh radiating portion extends towards the side of the second antenna radiator, the seventh radiating portion is opposite to the fourth side, and a seventh coupling gap is formed between the seventh radiating portion and the fourth side.
15. The antenna assembly of claim 13 or 14, wherein the first radiation set and the second radiation set are symmetrical about a perpendicular bisector of a line between the first radiation set and the second radiation set along the first target direction.
16. The antenna assembly of claim 13 or 14, wherein the first radiating portion, the first free edge, the first ground edge, the fifth radiating portion, the second free edge, and the second ground edge are aligned in the first target direction; or the first grounding edge, the first free edge, the first radiating portion, the second grounding edge, the second free edge and the fifth radiating portion are sequentially arranged along the first target direction.
17. The antenna assembly of claim 12, further comprising a third radiating group laminated to and spaced apart from the ground layer, the third radiating group being spaced apart from the first radiating group along a second target direction or the third radiating group being spaced apart from the second radiating group along the second target direction, the third radiating group comprising a third antenna radiator comprising a third feed point electrically connected to the radio frequency signal source, wherein the second target direction intersects the first target direction.
18. The antenna assembly of claim 17, wherein the third antenna radiator further comprises a third ground edge and a third free edge, the third ground edge, the third feed point, and the third free edge being arranged in sequence, the third ground edge comprising at least one fifth ground point, the at least one fifth ground point being electrically connected to the ground layer, the third radiating group further comprising a third radiating branch, the third radiating branch comprising an eighth radiating portion, the eighth radiating portion being located on a side of the third free edge facing away from the third ground edge, and an eighth coupling gap being formed between the eighth radiating portion and the third free edge, the eighth radiating portion comprising at least one sixth ground point, the at least one sixth ground point being electrically connected to the ground layer.
19. The antenna assembly according to claim 18, wherein the third antenna radiator further comprises a fifth side connected between one end of the third ground side and one end of the third free side and a sixth side connected between the other end of the third ground side and the other end of the third free side, the fifth side being disposed opposite to the sixth side, the third radiating branch further comprising a ninth radiating portion and/or a tenth radiating portion, one end of the ninth radiating portion being connected to the eighth radiating portion, the other end extending toward the side of the third antenna radiator, the ninth radiating portion being disposed opposite to the fifth side, and a ninth coupling gap being formed between the ninth radiating portion and the fifth side, one end of the tenth radiating portion being connected to the eighth radiating portion, the other end extending toward the side of the third antenna radiator, the tenth radiating portion being disposed opposite to the sixth side, and a tenth coupling gap being formed between the tenth radiating portion and the sixth side.
20. An electronic device comprising a device body and an antenna assembly according to any one of claims 1 to 19, the device body being arranged to carry the antenna assembly.
CN202211230539.7A 2022-09-30 2022-09-30 Antenna assembly and electronic equipment Pending CN117810674A (en)

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CN211350948U (en) * 2020-03-12 2020-08-25 Oppo广东移动通信有限公司 Antenna assembly and electronic equipment
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