CN109546346B - Double-circular polarization antenna unit with laminated structure - Google Patents
Double-circular polarization antenna unit with laminated structure Download PDFInfo
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- CN109546346B CN109546346B CN201811427464.5A CN201811427464A CN109546346B CN 109546346 B CN109546346 B CN 109546346B CN 201811427464 A CN201811427464 A CN 201811427464A CN 109546346 B CN109546346 B CN 109546346B
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- back plate
- microstrip antenna
- metal back
- bridge circuit
- circuit board
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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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- 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
-
- 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
- H01Q9/0414—Substantially flat resonant element parallel to ground plane, e.g. patch antenna in a stacked or folded configuration
-
- 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
- H01Q9/0428—Substantially flat resonant element parallel to ground plane, e.g. patch antenna radiating a circular polarised wave
Abstract
A stacked dual circularly polarized antenna unit comprising: the antenna comprises a lower metal back plate, a strip line electric bridge circuit board, an upper metal back plate, a lower microstrip antenna patch, a foam layer and an upper microstrip antenna patch; the stripline bridge circuit board is positioned between the lower metal back plate and the upper metal back plate, the lower microstrip antenna patch is positioned on the upper metal back plate, the foam layer is positioned on the lower microstrip antenna patch, and the upper microstrip antenna patch is positioned on the foam layer; the lower layer metal back plate is welded with the strip line bridge circuit board through a first connector, and the strip line bridge circuit board, the upper layer metal back plate and the lower layer microstrip antenna patch are welded through a second connector. The connection between the strip line bridge circuit board and the lower layer microstrip antenna patch is realized by arranging the upper layer metal back plate and adding the medium sintering connector, so that the use of a multilayer laminated plate technology is avoided, the cost is low, and the strip line bridge circuit and the microstrip antenna patch are easy to separate.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a double circularly polarized antenna unit of a laminated structure, which can be applied to a conformal phased array.
Background
The frequency spectrum resources are more and more precious in modern communication, and the existing frequency spectrum resources can be fully utilized through the use of antenna systems such as double circular polarization and the like to transmit more information. In such applications, miniaturization and integration of the dual circularly polarized antenna unit become very important.
Dual circularly polarized antennas suitable for use in conformal phased arrays have very limited profile heights that would otherwise interfere with adjacent array planes. Therefore, it becomes a great challenge to complete the design of stripline bridge, double-layer patch antenna, etc. under such height limitation. The stacked design of the stripline bridge and the antenna patch, and the electrical connections between them, all require as little height space as possible.
The conventional double circular polarization antenna with a laminated structure is realized by adopting a multilayer laminated plate technology, the cost generated by the multilayer laminated plate technology is very high, the strip line bridge and the antenna patch cannot be separated by the laminated double circular polarization antenna manufactured by the multilayer laminated plate technology, and the whole antenna patch or the strip line bridge needs to be scrapped if any one of the antenna patch or the strip line bridge has a problem in a debugging stage.
Disclosure of Invention
The application provides a double circular polarization antenna unit with a laminated structure, which comprises a lower metal back plate, a strip line electric bridge circuit board, an upper metal back plate, a lower microstrip antenna patch, a foam layer and an upper microstrip antenna patch;
the stripline bridge circuit board is positioned between the lower metal back plate and the upper metal back plate, the lower microstrip antenna patch is positioned on the upper metal back plate, the foam layer is positioned on the lower microstrip antenna patch, and the upper microstrip antenna patch is positioned on the foam layer;
the lower layer metal back plate is welded with the strip line electric bridge circuit board through a first connector, and the strip line electric bridge circuit board, the upper layer metal back plate and the lower layer microstrip antenna patch are welded through a second connector.
In one embodiment, the lower metal back plate is provided with a hole for mounting the first connector according to the feeding position, and a circular cavity is reserved for accommodating a welding point of the second connector inserted under the strip line electric bridge circuit board.
In one embodiment, the strip line electric bridge circuit board comprises an upper dielectric plate and a lower dielectric plate, wherein the upper dielectric plate and the lower dielectric plate are connected through prepreg bonding.
In one embodiment, the upper metal back plate is provided with a hole for mounting the second connector according to the feeding position, and a circular cavity is reserved for accommodating a welding point inserted on the strip-shaped wire bridge circuit board of the first connector.
In one embodiment, the top surface of the dielectric plate of the lower microstrip antenna patch is printed with antenna elements, and a through hole is formed at the position of the feed point for the second connector to be inserted and welded on the lower microstrip antenna patch.
In one embodiment, the lower surface of the foam layer is recessed to accommodate a solder joint for a second connector to be inserted on the lower microstrip antenna patch.
In one embodiment, the bottom surface of the dielectric plate of the upper layer microstrip antenna patch is printed with antenna units.
In one embodiment, the lower metal back plate, the strip line electric bridge circuit board, the upper metal back plate, the lower microstrip antenna patch, the foam layer and the upper microstrip antenna patch are fixed together by screws.
According to the double circular polarization antenna unit of the embodiment, the upper metal back plate is arranged between the strip line bridge circuit board and the lower microstrip antenna patch, and the connection between the strip line bridge circuit board and the lower microstrip antenna patch is realized by adding the medium sintering connector, so that the layer penetrating circuit is simplified, the profile height of the whole antenna is reduced, the use of a multilayer laminated board technology is avoided, the processing is convenient, the cost is low, the strip line bridge circuit and the microstrip antenna patch are easy to separate, the problem of easy positioning in a debugging stage is solved, and the double circular polarization antenna unit is an ideal double circular polarization antenna structural form.
Drawings
FIG. 1 is a schematic diagram of a dual circularly polarized antenna element in a stacked configuration;
FIG. 2 is a graph of a standing wave for a dual-polarized port;
FIG. 3 is a right hand circularly polarized pattern;
fig. 4 is a left hand circular polarization pattern.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings.
In the embodiment of the invention, the problem that the conventional double circularly polarized antenna usually has higher section height and faces high processing cost and the problem that the antenna and a polarizer strip line board cannot be separated when a micro-strip board multi-layer lamination technology is adopted is mainly solved. The invention adopts the mode of laminating the strip line bridge and the double-layer patch antenna, and the section height of the whole antenna is reduced by adding the medium sintered connector in the isolation metal plate, thereby being an ideal double circular polarization antenna structure form.
The structure diagram of the dual circularly polarized antenna unit with a stacked structure provided in this example is shown in fig. 1, and includes a multilayer structure including a lower metal back plate 1, a stripline bridge circuit board 2, an upper metal back plate 3, a lower microstrip antenna patch 4, a foam layer 5, and an upper microstrip antenna patch 6. The stripline bridge circuit board 2 is located between the lower metal back plate 1 and the upper metal back plate 3, the lower microstrip antenna patch 4 is located on the upper metal back plate 3, the foam layer 5 is located on the lower microstrip antenna patch 4, and the upper microstrip antenna patch 6 is located on the foam layer 5.
Through the sequential arrangement of the layers, the interlayer electric connection mode is as follows: the lower layer metal back plate 1 is welded with the strip line electric bridge circuit board 2 through a first connector, and the strip line electric bridge circuit board 2, the upper layer metal back plate 3 and the lower layer microstrip antenna patch 4 are welded through a second connector.
In the embodiment, the upper layer metal back plate 3 is arranged, and the sintering connector is added, so that the strip line electric bridge circuit board 2 and the microstrip antenna patch can be separated, the positioning is convenient in the debugging stage, and simultaneously, in the manufacturing process of the dual circularly polarized antenna unit of the present example, only the stripline bridge circuit board 2 requires a double-layer lamination technique, the double-layer laminating technology is a mature laminating technology, has low cost, avoids the three-layer laminating technology between the strip line electric bridge circuit board 2 and the lower layer microstrip antenna patch 4 (the process cost of the three-layer laminating technology is very high), therefore, the embodiment realizes a low-profile stacked dual circularly polarized antenna by skillfully stacking the design, under the limited height, a plurality of structures such as double-layer microstrip patch antennas, electric bridges, interlayer electric connection and the like are realized, and the method has the characteristics of process realizability and low cost.
The structural features of each layer are described in detail below.
A hole position for installing a first connector is reserved on the lower-layer metal back plate 1 according to the feeding position, and a circular cavity is reserved for accommodating a welding spot for inserting a second connector under a strip line bridge circuit board, wherein the first connector is T405-SPF ZF-170MM, and the second connector is WB-531.
The strip line electric bridge circuit board 2 comprises an upper dielectric plate and a lower dielectric plate, the upper dielectric plate and the lower dielectric plate are bonded and connected through a prepreg, and the total thickness of the strip line electric bridge circuit board 2 is about 2.2 mm.
Hole sites for installing the second connectors are reserved on the upper metal back plate 3 according to the feeding positions, the thickness of the upper metal back plate 3 is the same as the sintering height of the second connectors and is 2mm, and circular cavities are reserved on the lower surface of the upper metal back plate 3 to accommodate welding spots inserted on the strip-shaped wire bridge circuit board 2 by the first connectors.
The top surface of the dielectric plate of the lower layer microstrip antenna patch 4 is printed with an antenna unit, and a through hole is arranged at the position of the feed point for the second connector to be inserted and welded on the lower layer microstrip antenna patch 4.
The lower surface of the foam layer 5 is provided with a pit for accommodating a welding spot of a second connector inserted on the lower microstrip antenna patch 4.
The bottom surface of the dielectric plate of the upper layer microstrip antenna patch 6 is printed with the antenna unit, even if the antenna unit is reversely buckled below the dielectric plate, the protection effect is achieved.
Based on the structural characteristics of the above layers, the installation sequence of the dual circularly polarized antenna unit of this example is: firstly, a second connector is placed at a corresponding position on the upper surface of a strip line bridge circuit board 2, the lower pin of the second connector penetrates through the lower surface of the strip line bridge circuit board 2 to be welded, then the welded strip line bridge circuit board 2 is placed on a lower layer metal back plate 1, a first connector is fixed at a corresponding position of the lower layer metal back plate 1, the first connector is inserted through the lower layer metal back plate 1 and the strip line bridge circuit board 2, the first connector is welded on the upper surface of the strip line bridge circuit board 2, then an upper layer metal back plate 3 and a lower layer microstrip antenna patch 4 are sequentially stacked according to positioning, the upper pin of the second connector penetrates through the upper layer metal back plate 3 and the lower layer microstrip antenna patch 4, the second connector is welded on the upper surface of the lower layer microstrip antenna patch, after welding, a foam layer 5 and an upper layer microstrip antenna patch 6 are sequentially positioned and installed on the upper layer microstrip antenna patch, and finally, fixing the lower-layer metal back plate 1, the strip line electric bridge circuit board 2, the upper-layer metal back plate 3, the lower-layer microstrip antenna patch 4, the foam layer 5 and the upper-layer microstrip antenna patch 6 together through screws, thereby completing the installation of the dual circularly polarized antenna unit.
The performance simulation diagrams of the dual circularly polarized antenna unit of the present example are shown in fig. 2-4.
FIG. 2 is a graph of a measured standing wave of the dual polarized port of the embodiment of FIG. 1, wherein the abscissa represents the frequency variation in GHz; the ordinate represents the standing wave VSWR amplitude variation. As shown in FIG. 1, the operating frequency band of the laminated antenna of the embodiment is 8 GHz-8.5 GHz, and the VSWR of the port standing waves of the two polarizations is less than 1.3 in the pass band.
FIG. 3 is a right hand circularly polarized antenna pattern of the embodiment of FIG. 1, wherein the abscissa represents the angle variable in degrees; the ordinate represents the gain in dB. As shown in fig. 3, the right-hand circular polarization performance of this embodiment is excellent, and the cross polarization isolation in the normal direction is about 16.6 dB.
FIG. 4 is a left hand circularly polarized antenna pattern of the embodiment of FIG. 1, wherein the abscissa represents the angle variable in degrees; the ordinate represents the gain in dB. As shown in FIG. 4, the gain of this embodiment is about 8.6dB, the left-hand circular polarization performance is excellent, and the cross polarization isolation in the normal direction is about 16.5 dB.
Therefore, aiming at the conformal requirement of the phased array, under the condition that the section height of the antenna unit is limited, the purpose of avoiding adopting a multilayer lamination technology and saving the processing cost is achieved by adding the upper metal back plate 3 and skillfully designing the electric connection among all layers, and meanwhile, the microstrip antenna patch and the strip line electric bridge circuit board can be separated by eliminating the welding among all layers in the debugging stage, so that the purpose of easy positioning in the debugging stage is realized.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.
Claims (6)
1. A dual circularly polarized antenna unit of a stacked configuration, comprising: the antenna comprises a lower metal back plate, a strip line electric bridge circuit board, an upper metal back plate, a lower microstrip antenna patch, a foam layer and an upper microstrip antenna patch;
the stripline bridge circuit board is positioned between the lower metal back plate and the upper metal back plate, the lower microstrip antenna patch is positioned on the upper metal back plate, the foam layer is positioned on the lower microstrip antenna patch, and the upper microstrip antenna patch is positioned on the foam layer;
a hole position for mounting the first connector is reserved on the lower metal back plate according to the feeding position, and a circular cavity is reserved for accommodating a welding spot of the second connector inserted under the strip line electric bridge circuit board;
a hole position for mounting the second connector is reserved on the upper layer metal back plate according to the feeding position, and a circular cavity is reserved for accommodating a welding spot inserted on the strip line bridge circuit board by the first connector;
the lower layer metal back plate is welded with the strip line electric bridge circuit board through a first connector, and the strip line electric bridge circuit board, the upper layer metal back plate and the lower layer microstrip antenna patch are welded through a second connector.
2. The dual circularly polarized antenna unit of claim 1, wherein the stripline bridge circuit board comprises an upper dielectric plate and a lower dielectric plate, and the upper dielectric plate and the lower dielectric plate are adhesively connected by a prepreg.
3. The dual circularly polarized antenna unit of claim 1, wherein the antenna unit is printed on the top surface of the dielectric plate of the lower microstrip antenna patch, and a through hole is formed at the feed point for the second connector to be inserted and soldered on the lower microstrip antenna patch.
4. The dual circularly polarized antenna unit of claim 1, wherein said foam layer has a depression in a lower surface thereof to receive a solder joint for a second connector to be inserted on said lower microstrip antenna patch.
5. The dual circularly polarized antenna unit of claim 1, wherein the antenna unit is printed on the bottom surface of the dielectric plate of the upper microstrip antenna patch.
6. The dual circularly polarized antenna unit of claim 1, wherein the lower metal backplate, the stripline bridge circuit board, the upper metal backplate, the lower microstrip antenna patch, the foam layer, and the upper microstrip antenna patch are secured together by screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811427464.5A CN109546346B (en) | 2018-11-27 | 2018-11-27 | Double-circular polarization antenna unit with laminated structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811427464.5A CN109546346B (en) | 2018-11-27 | 2018-11-27 | Double-circular polarization antenna unit with laminated structure |
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| Publication Number | Publication Date |
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| CN109546346A CN109546346A (en) | 2019-03-29 |
| CN109546346B true CN109546346B (en) | 2021-09-07 |
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| CN201811427464.5A Active CN109546346B (en) | 2018-11-27 | 2018-11-27 | Double-circular polarization antenna unit with laminated structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112490656B (en) * | 2020-12-08 | 2021-12-14 | 西安电子科技大学 | Small circularly polarized GPS-BD microstrip antenna with positioning capability |
Citations (1)
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|---|---|---|---|---|
| CN101106215A (en) * | 2007-08-20 | 2008-01-16 | 哈尔滨工程大学 | Half U type open slot overlapping wide frequency band micro band antenna |
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| JP3892414B2 (en) * | 2003-05-27 | 2007-03-14 | 株式会社神戸製鋼所 | Manufacturing method of high-frequency circuit device |
| CN102013551B (en) * | 2010-09-15 | 2013-04-17 | 华南理工大学 | Circularly polarized ceramic antenna based on coupling and feeding of strip line via multiple slots |
| CN102891360A (en) * | 2012-09-29 | 2013-01-23 | 航天恒星科技有限公司 | Broadband miniaturization double-rotating circularly polarized antenna |
| CN103022730A (en) * | 2012-12-27 | 2013-04-03 | 北京理工大学 | High-gain multilayer dielectric composite dual-circular-polarization micro-strip array antenna |
| CN203300803U (en) * | 2013-06-21 | 2013-11-20 | 北斗天汇（北京）科技有限公司 | Beidou/GPS dual-mode hand-held machine multi-frequency point high gain transceiver antenna |
| CN105024143B (en) * | 2015-08-06 | 2018-08-28 | 中国电子科技集团公司第三十八研究所 | A kind of chip Ka frequency ranges large-angle scanning satellite communication antena |
| CN205004425U (en) * | 2015-10-20 | 2016-01-27 | 上海航天测控通信研究所 | Board carries stripline merit and divides ware |
| CN205159507U (en) * | 2015-12-08 | 2016-04-13 | 西安航光卫星测控技术有限公司 | On -vehicle receiving antenna of big dipper |
| CN105789917A (en) * | 2016-03-07 | 2016-07-20 | 北京航天控制仪器研究所 | Multi-frequency multi-mode handset navigation antenna |
| CN207087213U (en) * | 2017-06-29 | 2018-03-13 | 唐山钢铁集团有限责任公司 | For preparing the welding positioning tool of solder joint shearing resistance tensile sample |
| CN207149690U (en) * | 2017-08-14 | 2018-03-27 | 西安超天通信科技有限公司 | A kind of Big Dipper multi-frequency wide-beam circular polarization antenna |
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| CN101106215A (en) * | 2007-08-20 | 2008-01-16 | 哈尔滨工程大学 | Half U type open slot overlapping wide frequency band micro band antenna |
Non-Patent Citations (1)
| Title |
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| "Wideband dual-circularly-polarized microstrip antenna";Min Guo 等;《2010 International Symposium on Signals, Systems and Electronics》;20101115;第2栏第3段 * |
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