CN210296621U - Single-feed double-circular-polarization microstrip antenna - Google Patents
Single-feed double-circular-polarization microstrip antenna Download PDFInfo
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- CN210296621U CN210296621U CN201920672923.XU CN201920672923U CN210296621U CN 210296621 U CN210296621 U CN 210296621U CN 201920672923 U CN201920672923 U CN 201920672923U CN 210296621 U CN210296621 U CN 210296621U
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Abstract
The utility model discloses a single-feed dual circular polarization microstrip antenna can be through setting up the radiation paster that the cut is in two right-angled rectangular shapes on a diagonal on the antenna layer, then set up the conductor material layer including two at least H shape feed gaps on two relative surfaces of feed dielectric layer respectively to and set up two at least T shape feed structures that include to constitute by conductor material, two at least T shape feed structures are in projection on the first feed layer with two at least H shape feed gaps are the one-to-one vertical cross respectively. By the structure, 2 orthogonal signal modes with equal amplitude and 90-degree phase difference can be excited in the signal receiving and transmitting process, so that the circular polarization function of the antenna is realized. Therefore, the microstrip antenna in the embodiment of the application can realize the circular polarization function of the microstrip antenna without additionally arranging a feed network. The antenna has the technical effects of reducing the antenna loss and reducing the space occupation ratio of the microstrip antenna feed network.
Description
Technical Field
The utility model relates to a microwave millimeter wave antenna field especially relates to a single-feed dual circular polarization microstrip antenna.
Background
At present, with the continuous development of communication technology, the application range of microstrip patch antennas is continuously expanding due to the advantages of small size, light weight, low profile, easy processing and the like, and the application requirements of microstrip patch antennas are also increasing. However, the conventional microstrip antenna has a narrow bandwidth, and in order to implement dual circular polarization, a feeding network is further added to the conventional microstrip antenna, thereby increasing the antenna loss. Meanwhile, because the frequency of the signals correspondingly transmitted and received by the antenna in the millimeter wave frequency band is very high and the wavelength is very small, the size of the microstrip antenna unit required to correspondingly work is also very small, and therefore, the layout of the feed network is particularly difficult.
Therefore, in the prior art, a feed network needs to be added when the microstrip antenna realizes the dual circular polarization function, so that the antenna loss is increased, and the microstrip antenna is difficult to arrange when the microstrip antenna works in a millimeter wave frequency band.
SUMMERY OF THE UTILITY MODEL
The application provides a single-feed double-circular-polarization microstrip antenna, which is used for solving the technical problems that the feed network is required to be added when the double-circular-polarization function of the microstrip antenna in the prior art is realized, the antenna loss is increased, and the layout of the microstrip antenna is difficult when the microstrip antenna works in a millimeter wave frequency band.
The application provides a two circular polarization microstrip antenna of single-feed, include:
the antenna layer comprises an antenna dielectric substrate and a radiation patch arranged on one side surface of the antenna dielectric substrate, wherein the radiation patch is in a rectangular shape with two right angles cut off on a diagonal line;
the feed layer is attached to the other side surface of the antenna dielectric substrate and comprises a feed dielectric layer, a first feed layer and a second feed layer, the first feed layer and the second feed layer are respectively attached to the surfaces of the two sides of the feed dielectric layer, the first feed layer is a conductor material layer comprising at least two H-shaped feed gaps, the second feed layer comprises at least two T-shaped feed structures formed by conductor materials, the projections of the at least two T-shaped feed structures on the first feed layer are respectively intersected with the at least two H-shaped feed gaps in a one-to-one correspondence manner, the cross arms of the T-shaped feed structures are parallel to and not overlapped with the cross arms of the H-shaped feed gaps which are intersected correspondingly, and the first feed layer is positioned between the antenna dielectric substrate and the feed dielectric layer;
and the cross arms between every two adjacent H-shaped feeding gaps in the at least two H-shaped feeding gaps are perpendicular to each other, and/or the cross arms between every two adjacent T-shaped feeding structures in the at least two T-shaped feeding structures are perpendicular to each other.
Optionally, the feed layer further comprises:
and the at least four first metal through holes are arranged at the edge positions of the feed dielectric layer and the second feed layer so as to surround the at least two T-shaped feed structures.
Optionally, the feed layer further comprises:
and the at least one second metal through hole is arranged in the feeding dielectric layer and the second feeding layer and is positioned between every two adjacent T-shaped feeding structures.
Optionally, the feed dielectric layer is a microwave dielectric substrate or a ceramic sheet.
Optionally, the antenna layer comprises:
the first radiation layer comprises a first medium substrate and a first radiation patch arranged on the surface of the first medium substrate;
the second radiation layer is attached to the other side surface of the first medium substrate and comprises a second medium substrate and a second radiation patch arranged on the surface of the second medium substrate;
the second radiation patch is located between the first medium substrate and the second medium substrate, the area of the first radiation patch is larger than that of the second radiation patch, the area of the second radiation patch projected in the first radiation patch is larger than or equal to a second area, and the second area is half of the area of the second radiation patch.
Optionally, the first radiating patch is rectangular in shape with two right angles cut off on a first diagonal, the second radiating patch is rectangular in shape with two right angles cut off on a second diagonal, the first diagonal is parallel to the second diagonal;
the first radiation patch and the second radiation patch are consistent in side length proportion and arrangement direction.
Optionally, the two cut edges of the first radiating patch are parallel to the two cut edges of the second radiating patch.
Optionally, the conductor material is a copper material, and/or a silver-plated material.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
according to the technical scheme in the embodiment of the application, two right-angled rectangular radiation patches cut off on a diagonal line are arranged on an antenna layer, then conductor material layers comprising at least two H-shaped feed gaps are respectively arranged on two opposite surfaces of a feed medium layer, at least two T-shaped feed structures comprising the conductor materials are arranged, and projections of the at least two T-shaped feed structures on the first feed layer are respectively perpendicularly intersected with the at least two H-shaped feed gaps in a one-to-one correspondence mode. By the structure, 2 orthogonal signal modes with equal amplitude and 90-degree phase difference can be excited in the signal receiving and transmitting process, so that the circular polarization function of the antenna is realized. Therefore, the microstrip antenna in the embodiment of the application can realize the circular polarization function of the microstrip antenna without additionally arranging a feed network. The antenna has the technical effects of reducing the antenna loss and reducing the space occupation ratio of the microstrip antenna feed network.
Drawings
Fig. 1 is a three-dimensional structure diagram of each layer of a single-feed dual-circular-polarization microstrip antenna provided by an embodiment of the present invention;
fig. 2 is an antenna layer structure diagram of a single-feed dual-circular-polarization microstrip antenna provided in an embodiment of the present invention;
fig. 3 is a projection structure diagram of the T-shaped feeding structure projected onto the first feeding layer according to the embodiment of the present invention.
Detailed Description
The application provides a single-feed double-circular-polarization microstrip antenna, which is used for solving the technical problems that the feed network is required to be added when the double-circular-polarization function of the microstrip antenna in the prior art is realized, the antenna loss is increased, and the layout of the microstrip antenna is difficult when the microstrip antenna works in a millimeter wave frequency band.
In order to solve the technical problems, the general idea of the embodiment of the application is as follows:
according to the technical scheme in the embodiment of the application, two right-angled rectangular radiation patches cut off on a diagonal line are arranged on an antenna layer, then conductor material layers comprising at least two H-shaped feed gaps are respectively arranged on two opposite surfaces of a feed medium layer, at least two T-shaped feed structures comprising the conductor materials are arranged, and projections of the at least two T-shaped feed structures on the first feed layer are respectively perpendicularly intersected with the at least two H-shaped feed gaps in a one-to-one correspondence mode. By the structure, 2 orthogonal signal modes with equal amplitude and 90-degree phase difference can be excited in the signal receiving and transmitting process, so that the circular polarization function of the antenna is realized. Therefore, the microstrip antenna in the embodiment of the application can realize the circular polarization function of the microstrip antenna without additionally arranging a feed network. The microstrip antenna has the technical effects of reducing the antenna loss and reducing the space ratio of the microstrip antenna.
The technical solutions of the present application are described in detail below with reference to the drawings and specific embodiments, and it should be understood that the specific features in the embodiments and examples of the present application are detailed descriptions of the technical solutions of the present application, and are not limitations of the technical solutions of the present application, and the technical features in the embodiments and examples of the present application may be combined with each other without conflict.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
Example one
Referring to fig. 1, fig. 2, and fig. 3, an embodiment of the present invention provides a single-feed dual-circular-polarization microstrip antenna, including:
the antenna layer comprises an antenna dielectric substrate and a radiation patch arranged on one side surface of the antenna dielectric substrate, wherein the radiation patch is in a rectangular shape with two right angles cut off on a diagonal line;
a feed layer, attached to the other side surface of the antenna dielectric substrate, including a feed dielectric layer 120, and a first feed layer 121 and a second feed layer 122 attached to the two side surfaces of the feed dielectric layer 120, respectively, where the first feed layer 121 is a conductor material layer including at least two H-shaped feed gaps 1210, the second feed layer 122 includes at least two T-shaped feed structures 1220 made of conductor materials, projections of the at least two T-shaped feed structures 1220 on the first feed layer 121 are respectively intersected with the at least two H-shaped feed gaps 1210 in a one-to-one correspondence manner, a cross arm of the T-shaped feed structure 1220 is parallel to and does not overlap with a cross arm of the H-shaped feed gap 1210 that is intersected with the cross arm, and the first feed layer 121 is located between the antenna dielectric substrate and the feed dielectric layer 120;
wherein cross-arms between every two adjacent H-shaped feed slots 1210 of the at least two H-shaped feed slots 1210 are perpendicular to each other, and/or cross-arms between every two adjacent T-shaped feed structures 1220 of the at least two T-shaped feed structures 1220 are perpendicular to each other; the area of the projection of the at least two H-shaped feeding slots 1210 and the at least two T-shaped feeding structures 1220 in the radiating patch is greater than or equal to a first area, and the first area is half of the total area of the at least two H-shaped feeding slots 1210 and the at least two T-shaped feeding structures 1220.
It should be noted that the number of the H-shaped feeding slot 1210 and the T-shaped feeding structure 1220 in the embodiment of the present application is 2 respectively.
In practical applications, when the microstrip antenna in the embodiment of the present application performs signal transmission, a signal may be fed from a top end of the middle vertical portion of the T-shaped feed structure 1220, then transmitted to the cross-arm position of the T-shaped feed structure 1220, transmitted to the corresponding H-shaped feed slot 1210 by means of radiation feeding, and further radiated into space by the radiation patch. As shown in fig. 3, since the cross arms between the two H-shaped feed slots 1210 are perpendicular to each other and the cross arms between the two T-shaped feed structures 1220 are perpendicular to each other, the arrangement directions of the 2H-shaped feed slots 1210 are different by 90 °, and the arrangement directions of the corresponding T-shaped feed structures 1220 are also different by 90 °. In the transmission process of the signals, 2 orthogonal signal modes with equal amplitude and 90-degree phase difference can be excited based on the transmission path direction of the signals and the diagonal corner cutting processing of the radiation patches, so that the circular polarization function of the antenna is realized. And because the working mode of the antenna can be reciprocal, the signal receiving work can be realized according to the reverse process in the signal receiving process.
Meanwhile, in actual operation, matching between the microstrip antenna and different broadband signals in the embodiment of the present application can be achieved by controlling the slot length and width of the H-shaped feed slot 1210 and the position of the H-shaped feed slot on the first feed layer 121; on the other hand, the matching degree between the microstrip antenna and different broadband signals can be further achieved by controlling the length, width and position of the T-shaped feeding structure 1220 on the second feeding layer 122.
It can be seen that, in the embodiments of the present application, two right-angled rectangular radiation patches cut off on a diagonal line may be disposed on an antenna layer, then a conductor material layer including at least two H-shaped feed slots 1210 is disposed on two opposite surfaces of a feed medium layer 120, respectively, and at least two T-shaped feed structures 1220 made of the conductor material are disposed, and projections of the at least two T-shaped feed structures 1220 on the first feed layer 121 perpendicularly intersect the at least two H-shaped feed slots 1210 in a one-to-one correspondence manner, respectively. By the structure, 2 orthogonal signal modes with equal amplitude and 90-degree phase difference can be excited in the signal receiving and transmitting process, so that the circular polarization function of the antenna is realized. Therefore, the microstrip antenna in the embodiment of the application can realize the circular polarization function of the microstrip antenna without additionally arranging a feed network. The antenna has the technical effects of reducing the antenna loss and reducing the space occupation ratio of the microstrip antenna feed network.
Further in this embodiment, the feed layer further includes at least four first metal vias 103 disposed at the edge positions of the feed dielectric layer 120 and the second feed layer 122, and the at least two T-shaped feed structures 1220 can be enclosed by the at least four first metal vias 103. The feed layer further includes at least one second metal via 104, which is disposed inside the feed dielectric layer 120 and the second feed layer 122, and is located between every two adjacent T-shaped feed structures 1220.
The first metal through hole 103 can improve the isolation between the feed dielectric layer 120 and the second feed dielectric layer 122 in the microstrip antenna of the embodiment of the present application and other electrical components; the isolation between the T-shaped feeding structures 1220 can be improved by the second metal via 104. Therefore, the technical scheme in the embodiment of the application also has the technical effects of improving the signal transmission performance in the microstrip antenna and reducing the loss.
Still further, the antenna layer in the embodiment of the present application is a double-layer structure, including:
a first radiation layer including a first dielectric substrate 1110 and a first radiation patch 1111 disposed on a surface of the first dielectric substrate 1110;
a second radiation layer attached to the other side surface of the first dielectric substrate 1110, including a second dielectric substrate 1120 and a second radiation patch 1121 disposed on the surface of the second dielectric substrate 1120;
wherein the second radiation patch 1121 is located between the first dielectric substrate 1110 and the second dielectric substrate 1120, the area of the first radiation patch 1111 is larger than that of the second radiation patch 1121, the area of the second radiation patch 1121 projected in the first radiation patch 1111 is larger than or equal to a second area, and the second area is half of the area of the second radiation patch 1121.
Meanwhile, the first radiation patch 1111 has a rectangular shape in which two right angles are cut off on a first diagonal line, and the second radiation patch 1121 has a rectangular shape in which two right angles are cut off on a second diagonal line, the first diagonal line being parallel to the second diagonal line; wherein the first radiation patch 1111 and the second radiation patch 1121 have the same side length ratio and the same arrangement direction. The two cut edges of the first radiation patch 1111 are parallel to the two cut edges of the second radiation patch 1121.
By adjusting the size of the first radiation patch 1111 and the second radiation patch 1121 and the size of the cut angle, better circular polarization performance can be further optimized and realized; by adjusting the thicknesses of the first dielectric substrate 1110 and the second dielectric substrate 1120, the matching degree between the microstrip antenna and the broadband signal can be further improved.
It should be noted that the feeding dielectric layer 120 may be a microwave dielectric substrate or a ceramic sheet, and may be set by a user according to needs. In this embodiment, the feed dielectric layer 120 may be a microwave PCB substrate; the conductor material is a copper material, and/or a silver-plated material, or other materials with better conductivity.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Further, the steps of the methods in the technical solution of the present application may be reversed, and the sequence may be changed while still falling within the scope of the present invention. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (8)
1. A single-feed dual circularly polarized microstrip antenna, comprising:
the antenna layer comprises an antenna dielectric substrate and a radiation patch arranged on one side surface of the antenna dielectric substrate, wherein the radiation patch is in a rectangular shape with two right angles cut off on a diagonal line;
the feed layer is attached to the other side surface of the antenna dielectric substrate and comprises a feed dielectric layer, a first feed layer and a second feed layer, the first feed layer and the second feed layer are respectively attached to the surfaces of the two sides of the feed dielectric layer, the first feed layer is a conductor material layer comprising at least two H-shaped feed gaps, the second feed layer comprises at least two T-shaped feed structures formed by conductor materials, the projections of the at least two T-shaped feed structures on the first feed layer are respectively intersected with the at least two H-shaped feed gaps in a one-to-one correspondence manner, the cross arms of the T-shaped feed structures are parallel to and not overlapped with the cross arms of the H-shaped feed gaps which are intersected correspondingly, and the first feed layer is positioned between the antenna dielectric substrate and the feed dielectric layer;
and the cross arms between every two adjacent H-shaped feeding gaps in the at least two H-shaped feeding gaps are perpendicular to each other, and/or the cross arms between every two adjacent T-shaped feeding structures in the at least two T-shaped feeding structures are perpendicular to each other.
2. A microstrip antenna according to claim 1 wherein the feed layer further comprises:
and the at least four first metal through holes are arranged at the edge positions of the feed dielectric layer and the second feed layer so as to surround the at least two T-shaped feed structures.
3. A microstrip antenna according to claim 1 wherein the feed layer further comprises:
and the at least one second metal through hole is arranged in the feeding dielectric layer and the second feeding layer and is positioned between every two adjacent T-shaped feeding structures.
4. A microstrip antenna according to any of claims 1-3 wherein the feed dielectric layer is a microwave dielectric substrate or a ceramic plate.
5. The microstrip antenna of claim 1 wherein the antenna layer comprises:
the first radiation layer comprises a first medium substrate and a first radiation patch arranged on the surface of the first medium substrate;
the second radiation layer is attached to the other side surface of the first medium substrate and comprises a second medium substrate and a second radiation patch arranged on the surface of the second medium substrate;
the second radiation patch is located between the first medium substrate and the second medium substrate, the area of the first radiation patch is larger than that of the second radiation patch, the area of the second radiation patch projected in the first radiation patch is larger than or equal to a second area, and the second area is half of the area of the second radiation patch.
6. The microstrip antenna of claim 5 wherein the first radiating patch is rectangular in shape with two right angles cut off on a first diagonal and the second radiating patch is rectangular in shape with two right angles cut off on a second diagonal, the first diagonal being parallel to the second diagonal;
the first radiation patch and the second radiation patch are consistent in side length proportion and arrangement direction.
7. The microstrip antenna of claim 6 wherein the two cut edges of the first radiating patch are parallel to the two cut edges of the second radiating patch.
8. A microstrip antenna according to claim 1 wherein the conductor material is a copper material, and/or a silver-plated material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920672923.XU CN210296621U (en) | 2019-05-08 | 2019-05-08 | Single-feed double-circular-polarization microstrip antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920672923.XU CN210296621U (en) | 2019-05-08 | 2019-05-08 | Single-feed double-circular-polarization microstrip antenna |
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| CN210296621U true CN210296621U (en) | 2020-04-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110190387A (en) * | 2019-05-08 | 2019-08-30 | 成都天锐星通科技有限公司 | A kind of single feedback double-circle polarization microstrip antenna |
| US11695218B2 (en) | 2020-05-11 | 2023-07-04 | Nokia Solutions And Networks Oy | Antenna arrangement |
-
2019
- 2019-05-08 CN CN201920672923.XU patent/CN210296621U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110190387A (en) * | 2019-05-08 | 2019-08-30 | 成都天锐星通科技有限公司 | A kind of single feedback double-circle polarization microstrip antenna |
| US11695218B2 (en) | 2020-05-11 | 2023-07-04 | Nokia Solutions And Networks Oy | Antenna arrangement |
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