CN111740217B - Antenna assembly and electronic equipment - Google Patents
Antenna assembly and electronic equipment Download PDFInfo
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- CN111740217B CN111740217B CN202010636753.7A CN202010636753A CN111740217B CN 111740217 B CN111740217 B CN 111740217B CN 202010636753 A CN202010636753 A CN 202010636753A CN 111740217 B CN111740217 B CN 111740217B
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- antenna
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- antenna assembly
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
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Abstract
The application discloses antenna module and electronic equipment belongs to the communication field. The antenna assembly includes: an antenna dielectric substrate; the radiating patch is arranged on one side of the antenna medium substrate; the first feed structure is electrically connected with the radiation patch; the ground plate is arranged on the other side of the antenna medium substrate, the ground plate is provided with slot units, the projection of each radiation patch on the ground plate corresponds to at least one slot unit, and the slot units and the projection are arranged at intervals. In the antenna module of this application, can produce the resonance near antenna resonant frequency through the slot unit on the ground plate, improve resonance bandwidth, promote overall resonance bandwidth, increase antenna equivalent dimension for the bandwidth is wideer, can realize the radiation coverage in the opposite direction of antenna radiation direction, reduces the distortion that antenna radiation directional diagram takes place, and the reinforcing gain improves antenna efficiency, improves communication effect.
Description
Technical Field
The application belongs to the field of communication, concretely relates to antenna module and electronic equipment.
Background
Microstrip patch antennas have the advantages of small size, low profile, light weight, simple manufacturing process, easy realization of conformality, and the like, and are commonly used as millimeter wave antennas. Although the microstrip patch antenna has a simple structure, the bandwidth is narrow, sometimes the required frequency band is difficult to cover, and the microstrip patch antenna is unidirectional radiation and cannot cover the direction opposite to the radiation direction; in addition, when the ground of the microstrip patch antenna is longer than a plurality of wavelengths, electromagnetic energy can be propagated in the dielectric layer to form surface waves, the antenna efficiency can be reduced, the antenna radiation pattern can be distorted, the gain is reduced, and the communication effect is influenced.
Disclosure of Invention
The embodiment of the application aims to provide an antenna assembly and electronic equipment, and aims to solve the problems that the bandwidth of a microstrip patch antenna is narrow, the direction opposite to the radiation direction cannot be covered, the antenna efficiency is low, an antenna radiation directional diagram is easy to distort, the gain is reduced, and the communication effect is influenced.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides an antenna assembly, including:
an antenna dielectric substrate;
the radiating patch is arranged on one side of the antenna medium substrate;
a first feed structure electrically connected with the radiating patch;
the ground plate is arranged on the other side of the antenna medium substrate, slot units are arranged on the ground plate, the projection of each radiation patch on the ground plate corresponds to at least one slot unit, and the slot units and the projections are arranged at intervals.
Wherein the slit units extend in a circumferential direction of the corresponding projection.
The periphery of each projection is respectively distributed with a plurality of gap units, and the plurality of gap units corresponding to each projection are uniformly arranged around the corresponding circumferential direction of the projection at intervals.
The radiation patch is polygonal or circular, and four slit units are distributed on the periphery of each projection.
Wherein, one gap unit is distributed between two adjacent projections.
The antenna dielectric substrate is provided with a plurality of radiating patches which are arranged on the antenna dielectric substrate at intervals.
The length of the slot unit is one half of the wavelength corresponding to the working frequency of the antenna assembly in the antenna medium base body, and the width of the slot unit is smaller than one fifth of the length of the slot unit.
Wherein, still include:
and the second feed structures are arranged on one side of the antenna dielectric substrate, the second feed structures correspond to the slot units one by one, and the projection of each second feed structure on the grounding plate is at least partially overlapped with the corresponding slot unit.
Each slit unit comprises a plurality of micro-slits, the micro-slits are arranged in parallel at intervals along the width direction of the corresponding slit unit, and the micro-slits extend along the circumferential direction of the corresponding projection.
In a second aspect, embodiments of the present application further provide an electronic device, including an antenna assembly as described in the above embodiments of the first aspect.
In this application embodiment, the radiation patch is disposed on one side of the antenna dielectric substrate, the first feed structure is electrically connected to the radiation patch, the ground plate is disposed on the other side of the antenna dielectric substrate, a slot unit is disposed on the ground plate, at least one slot unit corresponds to a projection of each radiation patch on the ground plate, and the slot unit and the projection are disposed at an interval. In the antenna module of this application, can produce the resonance near antenna resonant frequency through the slot unit on the ground plate, improve resonance bandwidth, promote overall resonance bandwidth, increase antenna equivalent dimension for the bandwidth is wideer, can realize the radiation coverage in the opposite direction of antenna radiation direction, reduces the distortion that antenna radiation directional diagram takes place, and the reinforcing gain improves antenna efficiency, improves communication effect.
Drawings
Fig. 1 is a schematic view of a radiating patch on an antenna dielectric substrate in an antenna assembly of an embodiment of the present application;
FIG. 2 is a schematic structural diagram of an antenna assembly of an embodiment of the present application;
fig. 3a is another schematic structural view of an antenna assembly of an embodiment of the present application;
figure 3b is a further schematic structural diagram of an antenna assembly of an embodiment of the present application;
figure 3c is a further schematic structural diagram of an antenna assembly of an embodiment of the present application;
figure 3d is yet another structural schematic diagram of an antenna assembly of an embodiment of the present application;
fig. 4 is a schematic view of a distribution of a plurality of radiating patches in an antenna assembly of an embodiment of the present application;
fig. 5 is a schematic diagram of a feed microstrip line on an antenna dielectric substrate;
FIG. 6 is a further structural schematic diagram of an antenna assembly of an embodiment of the present application;
figure 7 is a further structural schematic diagram of an antenna assembly of an embodiment of the present application;
figure 8 is a further structural schematic diagram of an antenna assembly of an embodiment of the present application;
FIG. 9 is a schematic view of a micro-crack distribution.
Reference numerals
An antenna dielectric substrate 10;
a radiation patch 20; a first feed point 21;
a ground plate 30; a slit unit 31; micro-slits 32;
a feed microstrip line 40; a second feed point 41.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
The antenna assembly provided by the embodiment of the present application is described in detail through specific embodiments and application scenarios thereof with reference to the accompanying drawings.
As shown in fig. 1 to 9, an antenna assembly according to an embodiment of the present application includes an antenna dielectric substrate 10, at least one radiation patch 20, a first feeding structure, and a ground plate 30, where the radiation patch 20 is disposed on one side of the antenna dielectric substrate 10, the first feeding structure is electrically connected to the radiation patch 20, the ground plate 30 is disposed on the other side of the antenna dielectric substrate 10, slot units 31 are disposed on the ground plate 30, a projection of each radiation patch 20 on the ground plate 30 corresponds to at least one slot unit 31, and the slot units 31 are disposed at intervals from the projection.
That is, the antenna assembly is mainly composed of an antenna dielectric substrate 10, at least one radiation patch 20, a first feeding structure and a ground plate 30, wherein the antenna dielectric substrate 10 may be an insulating material, the radiation patch 20 and the ground plate 30 may be metal pieces, respectively, and the radiation patch 20 may be circular or polygonal. Wherein the polygon comprises a square. The ground plate 30 may be rectangular in shape, and the size of the ground plate 30 may be larger than that of the radiating patch 20. As shown in fig. 1 and fig. 2, the radiation patch 20 may be disposed on one side of the antenna dielectric substrate 10, the ground plate 30 is disposed on the other side of the antenna dielectric substrate 10, the first feeding structure is electrically connected to the radiation patch 20, the first feeding structure may be a first feeding point 21 disposed on the radiation patch 20, the first feeding point 21 may have one or more, such as two, through which the radiation patch 20 may be fed to enable the radiation patch 20 to radiate a signal, the first feeding point 21 may be connected to a feeding probe and a microstrip line, the feeding may be implemented in the form of probe feeding, microstrip line feeding, or coupled feeding, and the like, and according to actual needs, single polarization radiation or orthogonal dual polarization radiation may be implemented through the first feeding structure and the radiation patch 20.
As shown in fig. 3a to 3d, the ground plate 30 may be provided with at least one slot unit 31, projections of each radiation patch 20 on the ground plate 30 correspond to at least one slot unit 31, the slot units 31 are spaced from the projections, and a spacing distance between each slot unit 31 and the corresponding projection may be set according to actual conditions. The shape of the slit unit 31 can be selected according to practical situations, for example, the slit unit 31 can be straight, curved, zigzag, U-shaped or other long shapes, and the length, width and specific number of the slit units 31 can be selected according to practical situations. In the antenna module of this application, can produce the resonance near antenna resonant frequency through slot unit 31 on the ground plate 30, promote the resonance bandwidth, increase antenna equivalent dimension for the bandwidth is wideer, can realize the radiation coverage in the opposite direction of antenna radiation direction, reduces the distortion that antenna radiation directional diagram takes place, and the reinforcing gain improves antenna efficiency, improves communication effect.
In some embodiments of the present application, as shown in fig. 3a and 4, the slot elements 31 may extend in a circumferential direction of the corresponding projection, for example, the slot elements 31 located at the periphery of the projection of one of the radiation patches 20 on the ground plate 30 may extend in a circumferential direction of the projection of the radiation patch 20. A plurality of slot units 31 are distributed on the periphery of each projection respectively, and a plurality of slot units 31 corresponding to each projection are uniformly spaced around the periphery of the corresponding projection, for example, four slot units 31 are distributed on the periphery of each projection respectively, and four slot units 31 are uniformly spaced around the periphery of the corresponding projection, so that the resonance bandwidth is improved, the radiation in the opposite direction of the antenna radiation direction is enhanced, the distortion of the antenna radiation directional diagram is reduced, the gain is enhanced, and the antenna efficiency is improved.
Optionally, as shown in fig. 3a, the radiation patch 20 is rectangular, four slot units 31 are respectively distributed on the periphery of each projection, each slot unit 31 is respectively distributed corresponding to one side of the projection of the radiation patch 20, and each slot unit 31 may extend along one side of the projection of the corresponding radiation patch 20, that is, the four slot units 31 distributed on the periphery of each projection are symmetrical with respect to the geometric center of the projection, so that the regularity of an antenna radiation pattern can be maintained when the ground plane is large, and meanwhile, when the plurality of radiation patches 20 are arranged in an array, the influence of a surface wave on the antenna radiation pattern is reduced, and the antenna gain is maintained.
In the embodiment of the present application, as shown in fig. 4, one slot unit 31 is distributed between two adjacent projections, that is, one slot unit 31 is shared between two adjacent projections, and is simultaneously utilized by two radiation patches 20, which is beneficial to reducing the space between two adjacent projections and reducing the volume of the antenna assembly. When the space between two adjacent radiation patches 20 is wide, a plurality of slit units 31, such as two slit units 31, may be distributed between the projections of two adjacent radiation patches 20. In practical applications, the spacing between two adjacent radiation patches 20, and the number and the positions of the slit units 31 between the projections of two adjacent radiation patches 20 can be determined according to practical situations.
In some embodiments of the present application, as shown in fig. 4 and 8, the radiation patches 20 may have a plurality of radiation patches 20, the plurality of radiation patches 20 may be disposed on the antenna dielectric substrate 10 at intervals, the plurality of radiation patches 20 may be disposed at even intervals along the length direction of the antenna dielectric substrate 10, a plurality of slot units 31 disposed at even intervals are respectively distributed on the periphery of the projection of each radiation patch 20, for example, four slot units 31 are respectively distributed on the periphery of each projection, and when the plurality of radiation patches 20 are arranged in an array, the influence of a surface wave on an antenna radiation pattern may be reduced, an antenna gain may be maintained, and an antenna efficiency may be improved.
In other embodiments of the present application, the length of the slot element 31 may be one half of the wavelength corresponding to the operating frequency of the antenna assembly in the antenna dielectric substrate 10, the width of the slot element 31 is less than one fifth of the length of the slot element 31, so as to enhance the radiation in the direction opposite to the antenna radiation direction, reduce the distortion of the antenna radiation pattern, enhance the gain, and the length, the width, and the relative position of the projection of the slot element 31 and the radiation patch 20 may be determined according to actual conditions.
In the embodiment of the present application, as shown in fig. 5 to 8, the antenna assembly further includes a second feeding structure, the second feeding structure may be disposed on one side of the antenna dielectric substrate 10, the second feeding structure corresponds to the slot units 31 one by one, each second feeding structure corresponds to one slot unit 31, a projection of each second feeding structure on the ground plane 30 is at least partially overlapped with the corresponding slot unit 31, and the second feeding structure may feed and excite the corresponding slot unit 31, so that the slot unit 31 may serve as a radiator, so that radiation covers the upper and lower directions of the antenna dielectric substrate 10, thereby increasing a resonance bandwidth, enhancing radiation in the opposite direction of the antenna radiation direction, enhancing a gain, and improving antenna efficiency. Wherein the second feeding structures may include feeding microstrip lines 40, second feeding points 41 may be disposed on the feeding microstrip lines 40, and a projection of the feeding microstrip line 40 in each second feeding structure on the ground plate 30 at least partially overlaps the corresponding slot unit 31.
In some embodiments, as shown in fig. 9, each slit unit 31 may include a plurality of micro-slits 32, the plurality of micro-slits 32 in each slit unit 31 may be arranged in parallel and at intervals along the width direction of the corresponding slit unit 31, the plurality of micro-slits 32 may extend along the circumferential direction of the corresponding projection, each slit unit 31 has more than two micro-slits with narrower width and certain interval, and the overall width of the slit unit is further reduced, that is, the overall width of the plurality of micro-slits may be narrower than the width of a single slit unit.
The present application also provides an electronic device comprising an antenna assembly as described in the above embodiments. The antenna assembly in the electronic equipment has wider resonance bandwidth, can realize radiation coverage in the opposite direction of the antenna radiation direction, reduces the distortion of an antenna radiation directional diagram, enhances the gain, improves the antenna efficiency and improves the communication effect of the electronic equipment.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. An antenna assembly, comprising:
an antenna dielectric substrate;
the radiating patch is arranged on one side of the antenna medium substrate;
a first feed structure electrically connected with the radiating patch;
the ground plate is arranged on the other side of the antenna medium substrate, slot units are arranged on the ground plate, the projection of each radiation patch on the ground plate corresponds to at least one slot unit, and the slot units and the projection are arranged at intervals;
further comprising:
and the second feed structures are arranged on one side of the antenna dielectric substrate, the second feed structures correspond to the slot units one by one, and the projection of each second feed structure on the grounding plate is at least partially overlapped with the corresponding slot unit.
2. The antenna assembly of claim 1, wherein the slot elements extend circumferentially of the corresponding projection.
3. The antenna assembly of claim 1, wherein a plurality of the slot units are respectively distributed on the periphery of each projection, and the plurality of the slot units corresponding to each projection are uniformly spaced around the circumference of the corresponding projection.
4. The antenna assembly of claim 3, wherein the radiating patch is polygonal or circular, and four slot units are distributed on the periphery of each projection.
5. The antenna assembly of claim 3, wherein one of said slot elements is disposed between two adjacent of said projections.
6. The antenna assembly of claim 1, wherein the radiating patch is a plurality of radiating patches spaced apart on the antenna dielectric substrate.
7. The antenna assembly of claim 1, wherein the slot element has a length of one-half of a wavelength corresponding to an operating frequency of the antenna assembly in the antenna dielectric matrix, and wherein the slot element has a width of less than one-fifth of the length of the slot element.
8. The antenna assembly of claim 1, wherein each of the slot units includes a plurality of micro-slots, the plurality of micro-slots are spaced apart in parallel along a width direction of the corresponding slot unit, and the plurality of micro-slots extend along a circumferential direction of the corresponding projection.
9. An electronic device, comprising the antenna assembly of any one of claims 1-8.
Priority Applications (2)
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CN202010636753.7A CN111740217B (en) | 2020-07-03 | 2020-07-03 | Antenna assembly and electronic equipment |
PCT/CN2021/103587 WO2022002138A1 (en) | 2020-07-03 | 2021-06-30 | Antenna assembly and electronic device |
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CN202010636753.7A CN111740217B (en) | 2020-07-03 | 2020-07-03 | Antenna assembly and electronic equipment |
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CN111740217A CN111740217A (en) | 2020-10-02 |
CN111740217B true CN111740217B (en) | 2021-07-23 |
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CN111740217B (en) * | 2020-07-03 | 2021-07-23 | 维沃移动通信有限公司 | Antenna assembly and electronic equipment |
CN112864628A (en) * | 2021-01-13 | 2021-05-28 | 上海闻泰信息技术有限公司 | Antenna structure and wearable equipment |
CN112952345B (en) * | 2021-01-27 | 2023-05-26 | 维沃移动通信有限公司 | Electronic equipment |
WO2022226918A1 (en) * | 2021-04-29 | 2022-11-03 | 京东方科技集团股份有限公司 | Antenna and manufacturing method therefor, and antenna system |
CN113036439B (en) * | 2021-05-26 | 2021-07-30 | 成都天锐星通科技有限公司 | Microstrip antenna structure and communication equipment |
WO2023028727A1 (en) * | 2021-08-30 | 2023-03-09 | 京东方科技集团股份有限公司 | Antenna and manufacturing method therefor, and communication system |
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- 2021-06-30 WO PCT/CN2021/103587 patent/WO2022002138A1/en active Application Filing
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WO2022002138A1 (en) | 2022-01-06 |
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