CN112670703B - Grid side wall loading broadband dual-polarization planar element antenna - Google Patents
Grid side wall loading broadband dual-polarization planar element antenna Download PDFInfo
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- CN112670703B CN112670703B CN202011312638.0A CN202011312638A CN112670703B CN 112670703 B CN112670703 B CN 112670703B CN 202011312638 A CN202011312638 A CN 202011312638A CN 112670703 B CN112670703 B CN 112670703B
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Abstract
The invention provides a grid side wall loaded broadband dual-polarized planar element antenna, which comprises an antenna radiation surface, a foam column, a metal shell and a dual-coupling feeder, wherein the antenna radiation surface comprises an antenna radiation surface dielectric substrate, an antenna radiation arm and an orthogonal feed structure, the upper layer of the antenna radiation surface dielectric substrate is printed with a cross antenna radiation arm, the central position of the cross antenna radiation arm is pressed with the orthogonal feed structure, the orthogonal feed structure is a three-layer PCB, and the upper layer and the middle layer are printed with in-line feed to form a cross shape; the dual-combined feeder is characterized in that the foam columns are filled in the metal shell, grid bars are arranged on the side wall of the metal shell, the equivalent caliber of the antenna is controlled by adjusting the length, the width and the distance of the grid bars, the dual-combined feeder is inserted from the bottom of the metal shell, the feed columns of the dual-combined feeder penetrate through the bottom of the metal shell and are connected with the antenna radiation arm through rigid foam, and the bottom of the dual-combined feeder and the metal shell are made of PMI rigid foam.
Description
Technical Field
The invention relates to a dual-polarized planar reflection oscillator antenna applied to electronic system anti-interference and reconnaissance, in particular to a grid side wall loaded broadband dual-polarized planar oscillator antenna.
Background
A broadband dual-polarized planar element antenna is an antenna applied to anti-interference and reconnaissance of an electronic system. It is a key component of the propagation, transmission and reception of electromagnetic signals of a device, and its performance directly affects the electrical performance of the whole electronic system. With the increasingly fierce combat and defense of modern wars, the battlefield environment is becoming more and more complex, and the system defense-surging capability is getting more and more concerned. Therefore, the system defense system is required to have the target reconnaissance analysis capability, and meanwhile, on the basis of the obtained analysis data, interference suppression is carried out on the targets with threats, so that the defense system of an enemy is disabled, and the survival rate of the enemy is increased. In order to meet the requirement of multifunctional integration of the penetration protection equipment, the front end of the antenna has the capabilities of small size, wide band, multi-polarization, wide coverage, high power tolerance and the like. However, the existing dual-polarized oscillator antenna has the following problems that 1) the orthogonal feed structure adopts a mode of metal sheet overhead wiring, the metal sheet needs to be processed independently, in order to ensure the welding precision of a radiation surface and the metal sheet, an accurate tool needs to be processed independently to fix the radiation surface and the metal sheet so as to ensure the electrical property of the antenna, the structure is complex, and the processing is difficult. 2) The directional diagram optimization and the feed matching are performed by adjusting the size of the radiation arm and the depth of the metal cavity, and the effect is poor.
Disclosure of Invention
The invention aims to provide a grid side wall loaded broadband dual-polarized planar element antenna.
The technical solution for realizing the purpose of the invention is as follows: the utility model provides a grid lateral wall loading broadband dual polarization plane element antenna, includes antenna radiating surface, foam column, metal casing, two union coupling feeders, wherein:
the antenna radiation surface comprises an antenna radiation surface dielectric substrate, an antenna radiation arm and an orthogonal feed structure, wherein the upper layer of the antenna radiation surface dielectric substrate is printed with a cross antenna radiation arm, the center position of the cross antenna radiation arm is pressed with the orthogonal feed structure, the orthogonal feed structure is a three-layer PCB, and the upper layer and the middle layer are printed with in-line feed to form a cross shape;
the dual-combined feeder is characterized in that the foam columns are filled in the metal shell, grid bars are arranged on the side wall of the metal shell, the equivalent caliber of the antenna is controlled by adjusting the length, the width and the distance of the grid bars, the dual-combined feeder is inserted from the bottom of the metal shell, the feed columns of the dual-combined feeder penetrate through the bottom of the metal shell and are connected with the antenna radiation arm through rigid foam, and the bottom of the dual-combined feeder and the metal shell are made of PMI rigid foam.
Furthermore, the length, the width and the distance of the grid bars on the side wall of the metal shell are determined by the working frequency of the antenna.
Furthermore, the dual-coupling feeder adopts an integrated balun design structure, and the matching of the unbalanced coaxial line and the antenna radiation surface is realized by adjusting the height and the angle of the balun wedge.
Furthermore, first through holes are formed in the periphery of the medium substrate, four first threaded holes are formed in the top of the metal shell, and the antenna radiation surface is fixed on the metal shell through screws.
Furthermore, two second threaded holes are formed in the bottom of the metal shell, two second through holes are formed in a fixing flange of the dual-coupling feeder, and the dual-coupling feeder and the metal shell are fixed through matching screws.
Furthermore, a third through hole is formed in the outer side of the metal shell, and the antenna unit and the bottom plate are fixed through a matched screw.
Compared with the prior art, the invention has the remarkable advantages that: 1) The radiation surface of antenna, quadrature feed all adopt PCB printing to form, and wherein the crimping of quadrature feed structure is in the antenna radiation surface, and make the two link to each other through the metal via hole, have removed welding process from, make whole structure form an organic whole, and more accurate has also increased the shock resistance ability of radiation surface. 2) The equivalent aperture of the antenna is controlled by loading the grid strips on the side wall, and the directional diagram of the antenna is widened; 3) The antenna feed adopts a two-coupling feed form, the two coaxial bodies and the two output ports are fixed on the same flange plate, and the feed adopts a bevel-cutting balun structure, so that the feed structure is more compact and firm on the basis of matching the performance of the antenna, and the shock resistance and impact resistance of the whole antenna are increased; in addition, the rear end of the dual-coupling feeder is directly inserted into the microwave assembly, so that the number of connecting wires and sockets inside the projectile body is reduced, and the use reliability of the product is improved.
Drawings
Fig. 1 is an assembly structure view of a grid side wall loaded broadband dual-polarized planar element antenna of the invention, and (a) and (b) are respectively a combined view and an explosion view.
Fig. 2 is a structure diagram of a radiating surface of a grid sidewall-loaded broadband dual-polarized planar element antenna of the invention, wherein (a) and (b) are diagrams of two view angles respectively.
Fig. 3 is a structural diagram of a foam column of a grid side-wall-loaded broadband dual-polarized planar element antenna, wherein (a) and (b) are diagrams of two viewing angles respectively.
Fig. 4 is a structure diagram of a metal back cavity of a grid-strip side-wall-loaded broadband dual-polarized planar element antenna, wherein (a) and (b) are diagrams of two viewing angles respectively.
Fig. 5 is a structure diagram of a dual-connection feeder of a grid-strip side-wall-loaded broadband dual-polarized planar element antenna, wherein (a) and (b) are diagrams of two view angles respectively.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
With reference to fig. 1, the grid side wall loaded broadband dual-polarized planar element antenna comprises an antenna radiation surface A, a foam column B, a grid side wall loaded metal shell C and a dual-coupling feeder D.
As shown in fig. 2, the antenna radiation plane a is composed of an antenna radiation plane dielectric substrate 1, an antenna radiation arm 2, and an orthogonal feed structure 3, where the dielectric substrate 1 is an irregular octagonal structure, the long side is 19.3mm, the short side is 9.7mm, the long side and the short side alternately form an octagon, the thickness is 0.8mm, and the dielectric constant is 2.2. The antenna radiation arm 2 is a cross antenna radiation arm and is printed on the upper layer of the dielectric substrate 1, and the lower layer of the dielectric substrate 1 is free of copper. The orthogonal feed structure 3 is made of a three-layer PCB dielectric substrate with a dielectric constant of 2.2, and is in a cube shape, the side length is 6mm, and the thickness is 0.381mm. The first branch of the feeder line 4 is printed on the upper surface of the feed structure, and the other branch is printed on the middle layer of the feed structure, is orthogonal to the branch of the upper surface, is 0.127mm away, and is arranged in a crossed manner. The metal through hole 5 penetrates through the antenna radiation surface dielectric substrate 1, the antenna radiation arm 2 and the orthogonal feed structure 3, one end of each of the two branches is connected with the antenna radiation arm 2 and an inner core 18 of the duplex feeder D through the metal through hole 5, the metal through hole 6 is close to the metal through hole 5, penetrates through the antenna radiation surface dielectric substrate 1 and the antenna radiation arm 2 and is welded with an outer core 19 of the duplex feeder D, and the inner core 18 and the outer core 19 are respectively communicated with the two opposite arms through the design. The first through holes 7 are formed in the periphery of the dielectric substrate 1, the diameter of each through hole is 2mm, and the antenna radiation surface A is fixed on the first metal threaded hole 11 of the metal shell C through screws. The dielectric substrate 1 and the orthogonal feed structure 3 are pressed together and integrally formed, so that the positioning accuracy of the dielectric substrate and the orthogonal feed structure is greatly improved.
The foam column B is made of PMI rigid foam, and is machined into a cylinder with the diameter of 29.8mm and the thickness of 10.7 mm. Two through holes 9 are formed in the center of the cylinder, the diameter of each through hole is 2.7mm, the circle centers of the two through holes are 4.2mm apart, the circle centers of the two through holes and the circle center of the foam column are 2.97mm apart, and the lower ends of the through holes 9 are aligned with the through holes 12 of the metal shell C during installation.
The inner diameter of the cavity of the metal shell C is 30mm, the depth of the cavity is 10.7mm, and the outer diameter of the cavity is 33mm. A circle of grid bars 10 are distributed on the side wall of the shell, and four M1.6 metal first threaded holes 11 are uniformly distributed on the periphery of the top of the shell. The bottom of the inner cavity of the shell is provided with two M2.7 through holes 12 and two second threaded holes 13, wherein the through holes 12 are used for passing through a coaxial conductor 15 of the dual feeder D, and the diameter of the second threaded holes 13 is 2mm and used for fixing a fixing flange 16 of the dual feeder D. Four M2 third through holes 14 are uniformly distributed at the bottom of the outer side of the shell, and the antenna unit and the bottom plate can be fixed by using screws.
The surface of the duplex feeder D is plated with gold and consists of a coaxial conductor 15 and a fixed flange 16. The coaxial conductor 15 has an outer diameter of 2.6mm, and a balun 17 is arranged at the top end, is in an oblique split shape, and has a length of 10mm. The diameter of the inner core 18 at the top end of the coaxial conductor 15 is 0.5mm, and the diameter of the outer core 19 is 0.5mm. The coaxial conductor 15 and the fixing flange 16 are integrally formed, and two second through holes 20 are arranged on the fixing flange 16 and are screw holes, and the two second through holes are connected to the second threaded holes 13 of the metal shell C through M2 screws to fix the two combined feeders D. The fixed flange 16 is further provided with a radio frequency output hole 21 which is an SMP-J type output interface.
According to the grid strip side wall loading broadband dual-polarized planar element antenna, the coaxial conductor 15 of the dual-connection feeder D passes through the through hole 12 of the metal shell C, the balun 17 is enabled to be inward, then a screw penetrates through the second through hole 20 of the dual-connection feeder D and is screwed on the second threaded hole 13 of the metal shell C, and the dual-connection feeder D and the metal shell C are fixed. Uniformly coating a layer of thin 504 glue on the upper surface and the lower surface of the foam column B, filling the foam column B into the metal shell C, pressing the foam column B, enabling the through hole 9 of the foam column B to correspond to the through hole 12 of the metal shell C, and enabling the coaxial conductor 15 of the duplex feeder D to penetrate through the through hole 9 of the foam column B. The antenna radiation surface A is installed on the top end of the metal shell C, a screw penetrates through the first through hole 7 of the antenna radiation surface A and is screwed in the first threaded hole 11 of the metal shell C, the metalized through hole 5 of the antenna radiation surface A is fixedly connected through soldering tin in a welding mode corresponding to the inner core 18 of the duplex feeder D, and the metalized through hole 6 of the antenna radiation surface A is fixedly connected through soldering tin in a welding mode corresponding to the outer core 19 of the duplex feeder D.
The invention can provide the antenna with wide pitching coverage, full coverage in the azimuth direction and 90-degree orthogonal dual polarization, and can synthesize polarization in any form by a rear-end microwave network system. The side wall of the metal shell of the antenna is of a grid-bar-shaped structure, and the side wall grid bar is used as a load, so that the bandwidth can be effectively expanded and the beam width can be widened, and the performance of the whole antenna unit can be improved. The double-combined feeder adopts an integrated balun design structure, and the matching of the unbalanced coaxial line and the antenna radiation surface is realized by adjusting the height and the angle of the balun wedge, so that the radiation performance of the antenna is improved.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. The utility model provides a grid lateral wall loading broadband dual polarization plane element antenna, its characterized in that includes antenna radiating surface (A), foam column (B), metal casing (C), two union coupling feeders (D), wherein:
the antenna radiation surface (A) comprises an antenna radiation surface dielectric substrate (1), an antenna radiation arm (2) and an orthogonal feed structure (3), wherein the cross-shaped antenna radiation arm (2) is printed on the upper layer of the antenna radiation surface dielectric substrate (1), the cross-shaped antenna radiation arm is composed of two dipoles which are orthogonally arranged, the orthogonal feed structure (3) is pressed at the central position of the cross-shaped antenna radiation arm (2), the orthogonal feed structure (3) is a three-layer PCB, and the upper layer and the middle layer are printed with in-line feed to form a cross shape;
the foam column (B) is filled in the metal shell (C), the side wall of the metal shell (C) is provided with grid bars, the equivalent aperture of the antenna is controlled by adjusting the length, the width and the distance of the grid bars, the duplex feed (D) is inserted from the bottom of the metal shell (C), the feed column penetrates through the bottom of the metal shell (C) and passes through the foam column (B), the top end of the feed column is connected with the antenna radiation arm (2), and the bottom of the duplex feed (D) is fixed with the metal shell (C);
the dual-coupling feeder (D) comprises two feeding columns, the inner cores of the feeding columns are respectively connected with a specific position of a certain dipole in the radiation arms (2) of the antenna through metal through holes (5), and the inner cores (18) and the outer cores (19) are respectively communicated with the two arms opposite to the dipole.
2. The grid side-wall-loaded broadband dual-polarized planar element antenna according to claim 1, wherein the foam columns (B) are made of PMI rigid foam.
3. The grid side-wall-loaded broadband dual-polarized planar element antenna according to claim 1, wherein the length, width and spacing of the grid on the side wall of the metal shell (C) are determined by the operating frequency of the antenna.
4. The grid side wall loaded broadband dual-polarized planar element antenna according to claim 1, wherein the dual-connected feeder (D) adopts an integrated balun design structure, and the matching of the unbalanced coaxial line and the antenna radiation surface is realized by adjusting the height and the angle of a balun wedge.
5. The grid side wall loaded broadband dual-polarized planar element antenna according to claim 1, wherein first through holes (7) are formed in the periphery of the dielectric substrate (1), four first threaded holes (11) are formed in the top of the metal shell (C), and the antenna radiation surface (A) is fixed on the metal shell (C) through screws.
6. The grid side wall loading broadband dual-polarized planar element antenna according to claim 1, wherein two second threaded holes (13) are formed in the bottom of the metal shell (C), two second through holes (20) are formed in a fixing flange (16) of the dual-coupling feeder (D), and the dual-coupling feeder (D) is fixed to the metal shell (C) through screws.
7. The grid side wall loaded broadband dual-polarized planar element antenna according to claim 1, wherein a third through hole (14) is formed in the outer side of the metal shell (C), and the antenna unit and the bottom plate are fixed through a screw in a matching mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011312638.0A CN112670703B (en) | 2020-11-20 | 2020-11-20 | Grid side wall loading broadband dual-polarization planar element antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011312638.0A CN112670703B (en) | 2020-11-20 | 2020-11-20 | Grid side wall loading broadband dual-polarization planar element antenna |
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| CN112670703A CN112670703A (en) | 2021-04-16 |
| CN112670703B true CN112670703B (en) | 2023-01-13 |
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| CN117296202A (en) * | 2022-04-25 | 2023-12-26 | 京东方科技集团股份有限公司 | Dual polarized antenna and electronic equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101409382A (en) * | 2008-09-28 | 2009-04-15 | 东南大学 | Gradual change grooved wire antenna loaded by passive metal grid |
| CN103682611A (en) * | 2013-12-16 | 2014-03-26 | 广州杰赛科技股份有限公司 | Broadband dual-polarized antenna |
| WO2016029680A1 (en) * | 2014-08-25 | 2016-03-03 | 罗森伯格技术（昆山）有限公司 | Dual-polarization vibrator |
| CN206282963U (en) * | 2016-12-23 | 2017-06-27 | 武汉虹信通信技术有限责任公司 | One kind miniaturization base station antenna radiation unit |
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2020
- 2020-11-20 CN CN202011312638.0A patent/CN112670703B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101409382A (en) * | 2008-09-28 | 2009-04-15 | 东南大学 | Gradual change grooved wire antenna loaded by passive metal grid |
| CN103682611A (en) * | 2013-12-16 | 2014-03-26 | 广州杰赛科技股份有限公司 | Broadband dual-polarized antenna |
| WO2016029680A1 (en) * | 2014-08-25 | 2016-03-03 | 罗森伯格技术（昆山）有限公司 | Dual-polarization vibrator |
| CN206282963U (en) * | 2016-12-23 | 2017-06-27 | 武汉虹信通信技术有限责任公司 | One kind miniaturization base station antenna radiation unit |
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