CN209804884U - Broadband phased array antenna - Google Patents
Broadband phased array antenna Download PDFInfo
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- CN209804884U CN209804884U CN201920294701.9U CN201920294701U CN209804884U CN 209804884 U CN209804884 U CN 209804884U CN 201920294701 U CN201920294701 U CN 201920294701U CN 209804884 U CN209804884 U CN 209804884U
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Abstract
The utility model discloses a broadband phased array antenna increases parasitic paster layer on the paster layer of radiation through the adoption to set up annular gap and cross gap respectively on two pasters, adopt the mode of center feed simultaneously. The antenna further realizes the performance of the wide-axis ratio, circular polarization and high isolation of the antenna on the basis of meeting the requirement of the antenna broadband, and has the technical effect of improving the applicability of the phased array antenna.
Description
Technical Field
The utility model relates to an electronic communication technical field especially relates to a broadband phased array antenna.
Background
In the existing microwave millimeter wave phased array antenna, microminiaturization, high integration, low cost and tiling are development trends of antennas in the field, but because the existing phased array antenna processing technology is immature, the part specification and size of the phased array antenna are limited by the technology, and the antenna product obtained by actual production has great difficulty in realizing the performances of broadband, wide-axis ratio, high isolation and the like.
Meanwhile, the traditional large array generally adopts a simple probe feed patch antenna for realizing integration, and in the conventional probe feed circularly polarized microstrip antenna, the feed position is mostly eccentric feed, and the design of the feed part in the array is not convenient for grouping, especially in an integrated structure of high-frequency band and high-density routing. The bandwidth of the antenna is narrow, generally only 1% -7%, when the antenna is applied to a large-scale array, the coupling between antenna array elements is strong, and an isolation component needs to be added between the array elements to improve the isolation, but the bandwidth is inevitably reduced by the method.
furthermore, the axial ratio bandwidth of the traditional antenna circular polarization structure is very narrow, and the workload is large in the process of simulating and optimizing the axial ratio.
Therefore, the technical problems that the phased array antenna is difficult to simultaneously meet the requirements of broadband, broad axis ratio, circular polarization and high isolation degree exist in the prior art.
SUMMERY OF THE UTILITY MODEL
The application provides a broadband phased array antenna for solve the phased array antenna that exists among the prior art and be difficult to satisfy broadband, broad axis ratio, circular polarization and the technical problem of high isolation simultaneously.
The application provides a broadband phased array antenna, includes:
A microwave board;
The patch antenna unit comprises a first radiation patch layer and a second radiation patch layer, wherein the first radiation patch layer is arranged on the surface of the microwave board and comprises a first dielectric plate and a first radiation patch arranged on the first dielectric plate, and the second radiation patch layer is overlapped on the first radiation patch layer and comprises a second dielectric plate and a second radiation patch arranged on the second dielectric plate;
The first radiation patch is arranged between the first dielectric slab and the second dielectric slab, the first radiation patch comprises an annular gap and a probe for feeding the patch antenna unit, and the second radiation patch comprises a cross gap.
Optionally, the first radiation patch is square, and the annular gap is shaped as a square structure with an open side.
Optionally, the probe is disposed at a center of the annular slot, and the probe coincides with a center of a surface of the microwave board.
Optionally, the annular gap has a gap width greater than 0.1 mm.
optionally, the size of the cross slot is a preset size, so that the axial ratio of the phased array antenna is less than or equal to 3.
Optionally, the center of the cross slit coincides with the probe.
optionally, the first radiating patch includes two cut corners formed by cutting two first diagonal corners.
Optionally, the first radiating patch includes two branches formed by extending two second diagonal corners.
Optionally, the thicknesses of the microwave board and the patch antenna unit are less than or equal to a preset thickness.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
The phased array antenna in the embodiment of the application is additionally provided with the parasitic patch layer on the radiation patch layer, the two patches are respectively provided with the annular gap and the cross gap, and meanwhile, a central feeding mode is adopted. The antenna further realizes the performance of the wide-axis ratio, circular polarization and high isolation of the antenna on the basis of meeting the requirement of the antenna broadband, and has the technical effect of improving the applicability of the phased array antenna.
Furthermore, the thicknesses of the microwave board and the patch antenna unit in the embodiment of the application are less than or equal to the preset thickness, so that the technical effects of improving the integration level of the large-scale array antenna and effectively reducing the production cost of the tile type antenna are achieved.
Drawings
Fig. 1 is a structural diagram of a first radiation patch layer of a wideband phased array antenna according to an embodiment of the present invention;
Fig. 2 is a structural diagram of a second radiation patch layer of the wideband phased array antenna provided in an embodiment of the present invention;
fig. 3 is a perspective structural view of a wideband phased array antenna provided in an embodiment of the present invention.
Detailed Description
The application provides a broadband phased array antenna for solve the phased array antenna that exists among the prior art and be difficult to satisfy broadband, broad axis ratio, circular polarization and the technical problem of high isolation simultaneously.
In order to solve the technical problems, the general idea of the embodiment of the application is as follows:
The phased array antenna in the embodiment of the application is additionally provided with the parasitic patch layer on the radiation patch layer, the two patches are respectively provided with the annular gap and the cross gap, and meanwhile, a central feeding mode is adopted. The antenna further realizes the performance of the wide-axis ratio, circular polarization and high isolation of the antenna on the basis of meeting the requirement of the antenna broadband, and has the technical effect of improving the applicability of the phased array 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 application provides a wideband phased array antenna, including:
a microwave board 101;
The patch antenna unit comprises a first radiation patch layer and a second radiation patch layer, wherein the first radiation patch layer is arranged on the surface of the microwave board and comprises a first dielectric plate and a first radiation patch 102 arranged on the first dielectric plate, and the second radiation patch layer is overlapped on the first radiation patch layer and comprises a second dielectric plate and a second radiation patch 103 arranged on the second dielectric plate;
The first radiation patch 102 is disposed between the first dielectric plate and the second dielectric plate, the first radiation patch 102 includes an annular gap 1021 and a probe 1022 for feeding the patch antenna unit, and the second radiation patch includes a cross gap 1031.
in the phased array antenna in the embodiment of the present application, the second radiation patch layer 103 may be used as a parasitic unit to increase the antenna bandwidth, so that even when an isolation component is added between the antenna units of the large array to narrow the antenna bandwidth, the bandwidth of the phased array antenna in the embodiment of the present application may also meet the use requirement.
In practical applications, on one hand, in the embodiment of the present application, the first radiation patch 102 may be square, and the shape of the annular gap is a square structure with an open side. The probe 1022 disposed on the first radiation patch 102 may feed the first radiation patch 102 and the second radiation patch 103, and when the probe 1022 is disposed at the center of the annular slot 1021 and the probe 1022 coincides with the surface center of the microwave board, the antenna in the embodiment of the present application may adopt a center feeding manner, so that not only the design of the feeding portion in the large array may be facilitated, but also the size of the annular slot 1021 may be adjusted to implement impedance matching at the center of the antenna in the embodiment of the present application, and facilitate the rotating array in the large array. In order to meet the process requirements at the present stage, the width of the annular gap 1021 is greater than 0.1 mm, and the size of the cross gap 1031 is a predetermined size, so that the axial ratio of the phased array antenna is less than or equal to 3. Further, the center of the cross gap 1031 may also be coincident with the probe 1022.
On the other hand, by providing the cross slot 1031 on the second radiation patch 103, the antenna axial ratio can be effectively improved without affecting the bandwidth and impedance matching of the antenna.
Further, the first radiation patch 102 in the embodiment of the present application includes two cut corners 1023 formed by cutting two first diagonal corners and two branches 1024 formed by extending two second diagonal corners. Therefore, the circular polarization performance of the antenna can be further improved.
therefore, in the phased array antenna in the embodiment of the application, the parasitic patch layer is added on the radiation patch layer, the annular gap 1021 and the cross gap 1031 are respectively arranged on the two patches, and meanwhile, the central feeding mode is adopted. The antenna further realizes the performance of the wide-axis ratio, circular polarization and high isolation of the antenna on the basis of meeting the requirement of the antenna broadband, and has the technical effect of improving the applicability of the phased array antenna.
Still further, in the embodiment of the present application, the thicknesses of the microwave board and the patch antenna unit are less than or equal to a preset thickness. This is because the phased array antenna in the embodiment of the present application is integrally processed in a laminated form in actual production processing. Under the condition that the processing can be realized, the thickness of the antenna dielectric plate is required to be as thin as possible, and the number of layers is required to be as small as possible. Under the limitation of the process, the antenna in the embodiment of the application can still meet the requirement of a broadband, and compared with the broadband performance of the traditional phased array antenna, the broadband performance can be improved by at least 30%, so that the phased array antenna in the embodiment of the application also has the technical effects of improving the integration level of a large array antenna and effectively reducing the production cost of a tile type antenna.
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. 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 (9)
1. a wideband phased array antenna, comprising:
A microwave board;
The patch antenna unit comprises a first radiation patch layer and a second radiation patch layer, wherein the first radiation patch layer is arranged on the surface of the microwave board and comprises a first dielectric plate and a first radiation patch arranged on the first dielectric plate, and the second radiation patch layer is overlapped on the first radiation patch layer and comprises a second dielectric plate and a second radiation patch arranged on the second dielectric plate;
The first radiation patch is arranged between the first dielectric slab and the second dielectric slab, the first radiation patch comprises an annular gap and a probe for feeding the patch antenna unit, and the second radiation patch comprises a cross gap.
2. The phased array antenna of claim 1, wherein the first radiating patch is square and the annular slot is shaped as a square structure with sides open.
3. the phased array antenna of claim 2, wherein the probe is disposed at a center of the annular slot and the probe coincides with a center of a surface of the microwave board.
4. the phased array antenna of claim 1, wherein the slot width of the annular slot is greater than 0.1 millimeters.
5. The phased array antenna of claim 1, wherein the size of the cross slot is a predetermined size such that an axial ratio of the phased array antenna is 3 or less.
6. The phased array antenna of claim 5, wherein a center of the cross slot coincides with the probe.
7. The phased array antenna of claim 2, wherein the first radiating patch includes two cut corners formed by cutting two first diagonal corners.
8. The phased array antenna of claim 2, wherein the first radiating patch includes two branches formed by extending two second diagonal corners.
9. The phased array antenna of claim 1, wherein the microwave board and the patch antenna elements have a thickness equal to or less than a predetermined thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920294701.9U CN209804884U (en) | 2019-03-07 | 2019-03-07 | Broadband phased array antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920294701.9U CN209804884U (en) | 2019-03-07 | 2019-03-07 | Broadband phased array antenna |
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| Publication Number | Publication Date |
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| CN209804884U true CN209804884U (en) | 2019-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920294701.9U Active CN209804884U (en) | 2019-03-07 | 2019-03-07 | Broadband phased array antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109994818A (en) * | 2019-03-07 | 2019-07-09 | 成都天锐星通科技有限公司 | A kind of wideband phased array antenna |
| CN114552193A (en) * | 2022-02-28 | 2022-05-27 | 上海师范大学 | High-gain broadband printing sleeve antenna |
-
2019
- 2019-03-07 CN CN201920294701.9U patent/CN209804884U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109994818A (en) * | 2019-03-07 | 2019-07-09 | 成都天锐星通科技有限公司 | A kind of wideband phased array antenna |
| CN114552193A (en) * | 2022-02-28 | 2022-05-27 | 上海师范大学 | High-gain broadband printing sleeve antenna |
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