CN115173041A - Antenna unit, filtering antenna and terminal equipment - Google Patents

Antenna unit, filtering antenna and terminal equipment Download PDF

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Publication number
CN115173041A
CN115173041A CN202211012089.4A CN202211012089A CN115173041A CN 115173041 A CN115173041 A CN 115173041A CN 202211012089 A CN202211012089 A CN 202211012089A CN 115173041 A CN115173041 A CN 115173041A
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dielectric substrate
filtering
antenna
filtering component
feeding
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CN202211012089.4A
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CN115173041B (en
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吴祖兵
王新辉
叶保兵
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Chengdu T Ray Technology Co Ltd
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Chengdu T Ray Technology Co Ltd
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Priority to CN202211012089.4A priority Critical patent/CN115173041B/en
Publication of CN115173041A publication Critical patent/CN115173041A/en
Priority to PCT/CN2022/133128 priority patent/WO2024040764A1/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/36Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/36Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/50Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q23/00Antennas with active circuits or circuit elements integrated within them or attached to them

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Abstract

The application provides an antenna unit, filtering antenna and terminal equipment, includes: the antenna comprises a first dielectric substrate, a second dielectric substrate, a third dielectric substrate, a radiation structure and at least one group of transmission units, wherein each transmission unit comprises a first feed structure, a second feed structure and a filter structure; the second medium substrate is arranged between the first medium substrate and the third medium substrate, the radiation structure is arranged on one side of the first medium substrate, which is far away from the second medium substrate, the second feed structure is arranged on the second medium substrate, the filter structure is arranged on the third medium substrate, and the first feed structure is connected with the second feed structure and the filter structure; the first feed structure is used for transmitting electromagnetic wave signals; the second feeding structure is used for coupling and feeding power to the radiating structure; the filtering structure is used for filtering. Through the design of fusing antenna and wave filter, reduce equipment size, have low cost, high stability and good filtering characteristic.

Description

Antenna unit, filtering antenna and terminal equipment
Technical Field
The application relates to the field of antennas, in particular to an antenna unit, a filtering antenna and terminal equipment.
Background
With scientific progress and social development, more and more communication devices are used in life. For example, satellite communication devices are widely used in various industries. One of the essential components in a communication device is an antenna, the quality of which directly affects the communication quality of the communication device.
In the current engineering application, an antenna and a filter are often designed separately and separately, and then an additional matching circuit is designed to connect and debug the antenna and the filter, which often cannot achieve the optimal matching, and is easy to bring about larger insertion loss, and sometimes increases the size of the device.
Therefore, how to design an antenna with filtering function without extra loss becomes a difficult problem to be solved urgently by those skilled in the art.
Disclosure of Invention
It is an object of the present application to provide an antenna unit, a filtering antenna and a terminal device, so as to at least partially improve the above problems.
In order to achieve the above object, the embodiments of the present application adopt the following technical solutions:
in a first aspect, an embodiment of the present application provides an antenna unit, where the antenna unit includes: the antenna comprises a first dielectric substrate, a second dielectric substrate, a third dielectric substrate, a radiation structure and at least one group of transmission units, wherein each transmission unit comprises a first feed structure, a second feed structure and a filter structure;
the second dielectric substrate is arranged between the first dielectric substrate and a third dielectric substrate, the radiating structure is arranged on one side of the first dielectric substrate far away from the second dielectric substrate, the second feeding structure is arranged on one side of the second dielectric substrate close to the first dielectric substrate or one side of the first dielectric substrate close to the second dielectric substrate, the filtering structure is arranged on one side of the third dielectric substrate close to the second dielectric substrate or one side of the second dielectric substrate close to the first dielectric substrate, the first feeding structure penetrates through the first dielectric substrate, the second dielectric substrate and the third dielectric substrate, and the first feeding structure is connected with the second feeding structure and the filtering structure;
the first feed structure is used for transmitting electromagnetic wave signals;
the second feeding structure is used for coupling feeding to the radiating structure;
the filtering structure is used for filtering.
In one possible implementation, the second feeding structure at least partially overlaps with a projection of the radiating structure on the second dielectric substrate.
In a possible implementation manner, the filtering structure includes a first filtering component and a second filtering component, the first feeding structure is connected to one end of the first filtering component, and the other end of the first filtering component is connected to the second filtering component;
the first filtering assembly and the second filtering assembly form a T-shaped filtering structure.
In one possible implementation, the other end of the first filtering component is connected to a midpoint of the second filtering component.
In a possible implementation manner, the length of the first filtering component is a first length, the width of the first filtering component is a first width, the length of the second filtering component is a second length, and the width of the second filtering component is a second width;
the first length, the second length, the first width and the second width are matched with a radiation zero point of the antenna unit, and the radiation zero point is used for indicating a frequency band to be filtered.
In a possible implementation manner, an included angle between the first filtering component and the projection of the second feeding structure on the third dielectric substrate is a target rotation angle;
the target rotation angle is matched with a radiation zero point of the antenna unit, and the radiation zero point is used for indicating a frequency band to be filtered.
In a possible implementation manner, when the number of the transmission units is greater than 1, the transmission units are distributed around the central point of the radiation structure.
In a possible implementation, the geometry of the radiating structure is circular, rectangular or polygonal.
In a second aspect, an embodiment of the present application provides a filtering antenna, including: the antenna unit is described above.
In a third aspect, an embodiment of the present application provides a terminal device, including: the filtering antenna described above.
Compared with the prior art, the antenna unit, the filtering antenna and the terminal device provided by the embodiment of the application comprise: the antenna comprises a first dielectric substrate, a second dielectric substrate, a third dielectric substrate, a radiation structure and at least one group of transmission units, wherein each transmission unit comprises a first feed structure, a second feed structure and a filter structure; the second medium substrate is arranged between the first medium substrate and the third medium substrate, the radiation structure is arranged on one side of the first medium substrate, which is far away from the second medium substrate, the second feed structure is arranged on the second medium substrate, the filter structure is arranged on the third medium substrate, the first feed structure penetrates through the second medium substrate and the third medium substrate, and the first feed structure is connected with the second feed structure and the filter structure; the first feed structure is used for transmitting electromagnetic wave signals; the second feeding structure is used for coupling and feeding power to the radiation structure; the filtering structure is used for filtering. Through the design of fusing the antenna and the filter, the size of the equipment is reduced, and the antenna has low cost, high stability and good filtering characteristics.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
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, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and it will be apparent to those skilled in the art that other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic diagram of an antenna unit according to an embodiment of the present application;
fig. 2 is a schematic diagram illustrating comparison of filtering effects of a conventional antenna and a filtering antenna provided in an embodiment of the present application;
fig. 3 is a top view of an antenna unit provided in an embodiment of the present application;
fig. 4 is a side view of an antenna unit provided in an embodiment of the present application.
In the figure: 11-a first dielectric substrate; 12-a second dielectric substrate; 13-a third dielectric substrate; 14-antenna ground; 20-a transmission unit; 21-a first feeding structure; 22-a second feeding structure; 23-a filtering structure; 231-a first filtering component; 232-a second filtering component; 31-radiating structure.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, 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 embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally found in use of products of the application, and are used only for convenience in describing the present application and for simplification of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application.
In the description of the present application, it should also be noted that, unless expressly stated or limited otherwise, the terms "disposed" and "connected" are to be construed broadly, and may for example be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
In the current stage of engineering application, an antenna and a filter are often designed separately and independently, and then an additional external matching circuit is designed to connect and debug the antenna and the filter, so that the method cannot obtain optimal matching, is easy to bring larger insertion loss, and sometimes increases the size of equipment.
Therefore, in order to reduce the loss and achieve miniaturization, the inventors considered to realize the filter characteristic of the antenna by combining the filter characteristic with the antenna. The filter and the antenna are directly cascaded and integrally designed to reduce unnecessary external matching circuits, so that the matching loss is reduced, but the insertion loss of the filter still exists.
To further reduce the insertion loss, the inventor considers the filter antenna to be designed in a fusion mode, so that the antenna has both the radiation function and the filtering function, and the additional insertion loss does not exist.
In the fusion design of the filter antenna, the antenna is used as the last-order resonator of the filter to realize the filtering function, and the transmission mode of the antenna is changed by changing the structure of the antenna, such as etching a gap, adding a metal through hole, or adding a metamaterial structure, so as to generate a transmission zero point, thereby realizing the filtering function.
Referring to fig. 1, fig. 1 is a schematic view of an antenna unit provided in an embodiment of the present application. The antenna units are used as components of the filtering antenna, it should be noted that the filtering antenna may include a plurality of antenna units, and in fig. 1, for convenience of illustration, only one of the antenna units is shown.
As shown in fig. 1, the antenna unit includes: the antenna comprises a first dielectric substrate 11, a second dielectric substrate 12, a third dielectric substrate 13, a radiation structure 31 and at least one group of transmission units 20, wherein each transmission unit 20 comprises a first feeding structure 21, a second feeding structure 22 and a filtering structure 23.
It should be understood that one antenna unit may include multiple sets of transmission units 20,1, only one set of transmission units 20 being shown for ease of illustration.
The second dielectric substrate 12 is disposed between the first dielectric substrate 11 and the third dielectric substrate 13, the radiating structure 31 is disposed on a side of the first dielectric substrate 11 away from the second dielectric substrate 12, the second feeding structure 22 is disposed on a side of the second dielectric substrate 12 close to the first dielectric substrate 11 or a side of the first dielectric substrate 11 close to the second dielectric substrate 12, the filter structure 23 is disposed on a side of the third dielectric substrate 13 close to the second dielectric substrate 12 or a side of the second dielectric substrate 12 close to the third dielectric substrate 13, the first feeding structure 21 is disposed through the first dielectric substrate 11, the second dielectric substrate 12 and the third dielectric substrate 13, and the first feeding structure 21 is connected to the second feeding structure 22 and the filter structure 23.
Optionally, the antenna ground 14 is placed on the side of the third dielectric substrate 13 remote from the second dielectric substrate 12.
The first feed structure 21 is for transmitting electromagnetic wave signals; the second feeding structure 22 is used for coupling feeding to the radiation structure; the filter structure 23 is used for filtering.
Optionally, the first feed structure 21 is made of metal or other conductor material, such as a metal via. The first feed structure 21 may be connected to a microstrip line, thereby implementing electromagnetic wave signal transmission.
Alternatively, as shown in fig. 1, a side of the second dielectric substrate 12 close to the first dielectric substrate 11 or a side of the first dielectric substrate 11 close to the second dielectric substrate 12 is covered with a specific metal pattern to form the second feeding structure 22. The second feeding structure 22 is for coupling feeding to the radiating structure.
Optionally, as shown in fig. 1, a specific metal pattern is covered on one side of the third dielectric substrate 13 close to the second dielectric substrate 12 or one side of the second dielectric substrate 12 close to the third dielectric substrate 13 to form a filter structure 23. The filtering structure 23 is used to change the transmission mode of the antenna to generate transmission nulls for filtering.
The antenna unit simple structure that this application embodiment provided through with antenna and wave filter integration design, can be under the prerequisite that realizes low-pass, band-pass, high-pass, band elimination filtering characteristic, reduces the equipment size, has low-cost, high stability and good filtering characteristic.
To sum up, the antenna unit provided in the embodiment of the present application includes: the antenna comprises a first dielectric substrate, a second dielectric substrate, a third dielectric substrate, a radiation structure and at least one group of transmission units, wherein each transmission unit comprises a first feed structure, a second feed structure and a filter structure; the second medium substrate is arranged between the first medium substrate and the third medium substrate, the radiation structure is arranged on one side of the first medium substrate, which is far away from the second medium substrate, the second feed structure is arranged on the second medium substrate, the filter structure is arranged on the third medium substrate, the first feed structure penetrates through the second medium substrate and the third medium substrate, and the first feed structure is connected with the second feed structure and the filter structure; the first feed structure is used for transmitting electromagnetic wave signals; the second feeding structure is used for coupling and feeding power to the radiation structure; the filtering structure is used for filtering. Through the design of fusing antenna and wave filter, reduce equipment size, have low cost, high stability and good filtering characteristic.
Compared with the scheme of independently designing the antenna unit and the filter, the antenna with good filtering characteristics needs to be pressed for multiple times, the structure is complex, and the cost of the antenna is greatly increased. Each part in the antenna unit in the embodiment of the application is directly finished on the medium substrate, so that the structure is simple, the manufacture is easy, the PCB processing is convenient, the processing can be finished only by one-time pressing, the low cost is realized, and meanwhile, the good filtering characteristic is realized, and the great significance is realized on the practical engineering application.
Referring to fig. 2, fig. 2 is a schematic diagram illustrating a comparison between filtering effects of a conventional antenna and a filtering antenna according to an embodiment of the present application. Assuming that the operating frequency band of the filtering antenna is 14GHz-14.5GHz, 10GHz-13GHz needs to be filtered, the transmission zero is about 12.5GHz, and the filtering characteristic of the filtering antenna is as shown in fig. 2: the filter antenna works at 14GHz-14.55GHz, the gain full-band is greater than 5dB, the antenna gain is less than-15 dB at 10GHz-13GHz, the full-band rejection is greater than 20dB, a radiation zero point is formed at 12.6GHz, and the required filter effect is achieved. And the gain of the conventional non-filtering antenna is less than 0dB in the range of 10GHz-13GHz, the suppression is only 5dB, and the filtering effect is far lower than that of the filtering antenna provided by the embodiment of the application.
With continued reference to fig. 1, how to guarantee the performance of the antenna unit, the embodiment of the present application also provides a possible implementation manner. The second feed structure 22 at least partially overlaps the projection of the radiating structure 31 onto the second dielectric substrate 12.
It will be appreciated that the size of the overlapping area is related to the preset operating frequency.
Alternatively, one end of the second feeding structure 22 is connected to the first feeding structure 21, and the other end of the second feeding structure 22 is directed to the geometric center of the projection of the radiating structure 31 on the second dielectric substrate 12.
Referring to fig. 3, fig. 3 is a top view of an antenna unit according to an embodiment of the present disclosure. As shown in fig. 3, in one possible implementation, the filtering structure 23 includes a first filtering component 231 and a second filtering component 232, the first feeding structure 21 is connected to one end of the first filtering component 231, and the other end of the first filtering component 231 is connected to the second filtering component 232.
The first filter component 231 and the second filter component 232 form a T-shaped filter structure.
In one possible implementation, an end of the first filtering component 231 away from the first feeding structure 21 is in contact with the length L2 direction in the second filtering component 232.
Optionally, the first filter assembly 231 and the second filter assembly 232 are opened on the side of the third dielectric substrate 13 close to the second dielectric substrate 12 or the side of the second dielectric substrate 12 close to the third dielectric substrate 13.
It should be noted that the first filtering component 231 and the second filtering component 232 may not be limited to be straight lines, and may also be curves with amplitudes.
In one possible implementation, to improve the filtering effect, the other end of the first filtering component 231 is connected to the midpoint of the second filtering component 232.
Referring to fig. 3, the length of the first filter element is a first length L1, the width of the first filter element is a first width W1, the length of the second filter element is a second length L2, and the width of the second filter element is a second width W2.
The first length L1, the first width W1, the second length L2, and the second width W2 are matched with a radiation zero of the antenna unit, and the radiation zero is used for indicating a frequency band to be filtered.
For example, as shown in fig. 2, the radiation zero point is at 12.6GHz, which can have a filtering effect on a frequency band of 10GHz to 13 GHz.
It should be noted that, by adjusting the sizes of L1, L2, W1, and W2 in the T-shaped filter structure, the radiation null position of the antenna can be changed, so that it is necessary to ensure that the first length L1, the first width W1, the second length L2, and the second width W2 match the radiation null of the antenna element in the antenna design process.
With continued reference to fig. 3, in one possible implementation manner, an included angle between the first filtering component 231 and the projection of the second feeding structure 22 on the third dielectric substrate 13 is a target rotation angle.
The target rotation angle is matched with the radiation zero point of the antenna unit, and the radiation zero point is used for indicating a frequency band to be filtered.
It will be appreciated that rotation of the T-shaped filter structure about the first feed structure 21 changes the position of the radiation null of the antenna. The target rotation angle needs to be determined in advance during the antenna design process. The target rotation angle is matched with the radiation zero point of the antenna unit.
In a possible implementation, when the number of the transmission units 20 is greater than 1, the transmission units 20 are distributed around the central point of the radiation structure 31.
For example, when the number of the transmission units 20 is 2, it may be rotated by 90 °, 180 °, 270 ° based on the center point of the radiation structure 31.
When the number of transmission units 20 is 3, the transmission units 20 may be distributed in a circle around the center point of the radiation structure 31, and 3 transmission units 20 are rotated by 120 ° around the center point of the radiation structure 31.
When the number of transmission elements 20 is 3, the transmission elements 20 may be non-uniformly distributed around the center point of the radiation structure 31, assuming that the angle of one of the transmission elements 20 is 0 °, and the remaining 2 transmission elements 20 have 3 rotation combinations around the center point of the radiation structure 31, the first one is 90 °, 180 °, the first one is 90 °, 270 °, and the first one is 180 °, 270 °.
When the number of the transmission units 20 is 4, the transmission units 20 may be uniformly distributed around the center point of the radiation structure 31, and 4 transmission units 20 are rotated by 90 ° around the center point of the radiation structure 31.
In a possible implementation, the geometry of the radiating structure 31 is circular, rectangular or polygonal.
Optionally, the first feeding structure 21, the second feeding structure 22 and the filtering structure 23 are metal structures.
It should be noted that the characteristics (including relative dielectric constant, loss tangent and thickness) of the 3-layer microwave dielectric substrate may be the same or different, and are not limited herein.
Alternatively, the microwave dielectric substrate properties may affect the size, shape, area, etc. of the radiating structure 31 and the feed structure. For example, the dielectric constant is large, the radiating structure area is small, and the intersection area of the second feed structure 22 and the radiating structure 31 is small; if the loss angle is large, the gain of the antenna is reduced.
For the convenience of understanding, the embodiment of the present application further provides a side view of an antenna unit, which is specifically shown in fig. 4.
The embodiment of the application further provides a filtering antenna, and the filtering antenna comprises the antenna unit. In the scheme of the application, the number of the antenna units in the filtering antenna is not limited.
The embodiment of the application also provides terminal equipment, and the terminal equipment comprises the filtering antenna. The terminal device may be a satellite communications base station.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (10)

1. An antenna unit, characterized in that the antenna unit comprises: the antenna comprises a first dielectric substrate, a second dielectric substrate, a third dielectric substrate, a radiation structure and at least one group of transmission units, wherein each transmission unit comprises a first feed structure, a second feed structure and a filter structure;
the second dielectric substrate is arranged between the first dielectric substrate and a third dielectric substrate, the radiating structure is arranged on one side of the first dielectric substrate far away from the second dielectric substrate, the second feeding structure is arranged on one side of the second dielectric substrate close to the first dielectric substrate or one side of the first dielectric substrate close to the second dielectric substrate, the filtering structure is arranged on one side of the third dielectric substrate close to the second dielectric substrate or one side of the second dielectric substrate close to the third dielectric substrate, the first feeding structure is arranged on the first dielectric substrate, the second dielectric substrate and the third dielectric substrate in a penetrating manner, and the first feeding structure is connected with the second feeding structure and the filtering structure;
the first feed structure is used for transmitting electromagnetic wave signals;
the second feeding structure is used for coupling feeding to the radiating structure;
the filtering structure is used for filtering.
2. The antenna element of claim 1, wherein said second feed structure at least partially overlaps a projection of said radiating structure onto said second dielectric substrate.
3. The antenna element of claim 1, wherein said filtering structure comprises a first filtering component and a second filtering component, said first feed structure being connected to one end of said first filtering component, the other end of said first filtering component being connected to said second filtering component;
the first filtering assembly and the second filtering assembly form a T-shaped filtering structure.
4. The antenna element of claim 3 wherein said first filtering component has another end connected to a midpoint of said second filtering component.
5. The antenna unit of claim 3, wherein the length of the first filtering component is a first length, the width of the first filtering component is a first width, the length of the second filtering component is a second length, and the width of the second filtering component is a second width;
the first length, the second length, the first width and the second width are matched with a radiation zero point of the antenna unit, and the radiation zero point is used for indicating a frequency band to be filtered.
6. The antenna unit of claim 3, wherein an angle between the first filtering component and a projection of the second feeding structure on the third dielectric substrate is a target rotation angle;
the target rotation angle is matched with a radiation zero point of the antenna unit, and the radiation zero point is used for indicating a frequency band to be filtered.
7. The antenna element of claim 1, wherein when the number of transmission elements is greater than 1, the transmission elements are uniformly distributed around a center point of the radiating structure.
8. The antenna element of claim 1, wherein the radiating structure has a geometry that is circular, rectangular, or polygonal.
9. A filtering antenna, comprising: an antenna unit according to any of claims 1-8.
10. A terminal device, comprising: the filtering antenna of claim 9.
CN202211012089.4A 2022-08-23 2022-08-23 Antenna unit, filter antenna and terminal equipment Active CN115173041B (en)

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CN202211012089.4A CN115173041B (en) 2022-08-23 2022-08-23 Antenna unit, filter antenna and terminal equipment
PCT/CN2022/133128 WO2024040764A1 (en) 2022-08-23 2022-11-21 Antenna unit, filtering antenna, and terminal device

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WO2024040764A1 (en) * 2022-08-23 2024-02-29 成都天锐星通科技有限公司 Antenna unit, filtering antenna, and terminal device

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