CN115332768A - Dual-polarized broadband ridge waveguide slot antenna - Google Patents
Dual-polarized broadband ridge waveguide slot antenna Download PDFInfo
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- CN115332768A CN115332768A CN202210983699.2A CN202210983699A CN115332768A CN 115332768 A CN115332768 A CN 115332768A CN 202210983699 A CN202210983699 A CN 202210983699A CN 115332768 A CN115332768 A CN 115332768A
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- ridge waveguide
- slot antenna
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- 230000010287 polarization Effects 0.000 claims abstract description 82
- 230000005855 radiation Effects 0.000 claims abstract description 22
- 230000005611 electricity Effects 0.000 claims abstract description 3
- 230000009977 dual effect Effects 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 abstract description 16
- 238000000034 method Methods 0.000 description 6
- 238000004590 computer program Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
-
- 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
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/22—Longitudinal slot in boundary wall of waveguide or transmission line
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0037—Particular feeding systems linear waveguide fed arrays
- H01Q21/0043—Slotted waveguides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The present disclosure provides a dual-polarized broadband ridge waveguide slot antenna, comprising: the antenna comprises a plurality of horizontal polarization units and a plurality of vertical polarization units, wherein the horizontal polarization units and the vertical polarization units are arranged in a staggered mode to form an antenna radiation array surface; the connectors are arranged at the bottom of each horizontal polarization unit and each vertical polarization unit; the horizontal polarization unit and the vertical polarization unit comprise ridge waveguides and power dividers; the power divider is arranged in the hollow inner space of the ridge waveguide, connected with the top of the ridge waveguide and connected with the connector and used for feeding electricity to the ridge waveguide; the top of the ridge waveguide of the horizontal polarization unit is longitudinally provided with a plurality of linear gaps along the extension direction of the ridge waveguide; a plurality of splayed slots are formed in the extension direction of the ridge waveguide at the top of the ridge waveguide of the vertical polarization unit. The dual-polarized broadband ridge waveguide slot antenna can realize small size and simultaneously has good impedance matching in a broadband range, and good directional diagram characteristics are ensured.
Description
Technical Field
The utility model relates to a radar antenna technical field especially relates to a dual polarization broadband ridge waveguide slot antenna.
Background
In order to meet the requirements of the phased array radar system for the radiation electrical performance and the distance to the small size, an antenna radiation unit which is wide in band, good in directional diagram quality and small in size needs to be designed. Among the existing antenna forms, the waveguide antenna is a common antenna form due to its high bandwidth, stable structure, excellent scanning performance, and easy integration.
In order to optimize the performance of the waveguide slot antenna, there have been many related researches for reducing the distance-wise size while ensuring good matching characteristics and patterns of the antenna. In the existing method, a ridge is added in a waveguide to change the transmission mode of electromagnetic waves in the waveguide, so that the electromagnetic excitation and propagation of lower frequency can be realized under a narrower size. Aiming at the requirements of small size, broadband characteristic and good directional diagram index of the radar antenna at the present stage, a ridge waveguide slot antenna with horizontal polarization and a ridge waveguide slot antenna with vertical polarization and a matched integrated ridge waveguide one-to-two power divider need to be designed.
Disclosure of Invention
In view of the above, the present invention provides a dual-polarized wideband ridge waveguide slot antenna to solve the problem of the need for an antenna that is small in size while maintaining wideband characteristics and good pattern directivity.
One aspect of the present disclosure provides a dual-polarized broadband ridge waveguide slot antenna, comprising: the antenna comprises a plurality of horizontal polarization units and a plurality of vertical polarization units, wherein the horizontal polarization units and the vertical polarization units are arranged in a staggered mode to form an antenna radiation array surface; the connector is arranged at the bottom of each horizontal polarization unit and each vertical polarization unit; the horizontal polarization unit and the vertical polarization unit respectively comprise a ridge waveguide and a power divider; the power divider is arranged in the hollow inner space of the ridge waveguide, connected with the top of the ridge waveguide, connected with the connector and used for feeding power to the ridge waveguide; the top of the ridge waveguide of the horizontal polarization unit is longitudinally provided with a plurality of linear gaps along the extension direction of the ridge waveguide; and a plurality of splayed gaps are formed in the extension direction of the ridge waveguide at the top of the ridge waveguide of the vertical polarization unit.
Optionally, the ridge inside the power divider is of a step-type structure, and the thickness, height and shape of each step are not completely the same.
Optionally, the wall thickness of the ridge waveguide of the horizontally polarized cell and the vertically polarized cell is 0.5-1mm.
Optionally, the width of the horizontal polarization unit is 7-10mm.
Optionally, the width of the vertical polarization unit is 4-6mm.
Optionally, the width of the adjacent group of the horizontal polarization unit and the vertical polarization unit is less than 11-16mm.
Optionally, each of the horizontal polarization units includes 4 to 12 linear slits, and each of the vertical polarization units includes 4 to 12 splayed slits.
Optionally, the dual-polarized wideband ridge waveguide slot antenna has a frequency band in a range of 14-20GHz.
Optionally, the antenna radiation front is grounded through the metal housing.
Optionally, the connectors at the bottom of each horizontal polarization unit and each vertical polarization unit are located on the same plane.
The at least one technical scheme adopted in the embodiment of the disclosure can achieve the following beneficial effects:
the utility model provides a small-size dual polarization broadband ridge waveguide slot antenna, including a plurality of horizontal polarization units and a plurality of vertical polarization unit, horizontal polarization unit and vertical polarization unit are crisscross arranges, form the antenna radiation array face, and the merit divides the ware to locate in the ridge waveguide of horizontal polarization unit and vertical polarization unit, realizes that integration ridge waveguide merit divides the ware to encourage, realizes the distance of antenna to miniaturization on the basis of guaranteeing that the broadband in-band directional diagram is of high quality.
Drawings
For a more complete understanding of the present disclosure and the advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which:
fig. 1 schematically illustrates a schematic wavefront diagram of a dual-polarized wideband ridge waveguide slot antenna provided in an embodiment of the present disclosure;
fig. 2A schematically illustrates a front and side view of a horizontally polarized radiating element provided by an embodiment of the present disclosure;
fig. 2B schematically illustrates a schematic diagram of a power divider and a connector in a horizontally polarized radiation unit provided in an embodiment of the present disclosure;
fig. 3A schematically illustrates a front and side view of a vertically polarized radiating element provided by an embodiment of the present disclosure;
fig. 3B schematically illustrates a schematic diagram of a power divider and a connector in a vertically polarized radiation unit provided in an embodiment of the present disclosure;
fig. 4 schematically illustrates a schematic diagram of a set of horizontally polarized radiation elements and vertically polarized radiation elements provided by an embodiment of the present disclosure.
Detailed Description
Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. It should be understood that these descriptions are illustrative only and are not intended to limit the scope of the present disclosure. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The terms "comprises," "comprising," and the like, as used herein, specify the presence of stated features, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components.
All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. It is noted that the terms used herein should be interpreted as having a meaning that is consistent with the context of this specification and should not be interpreted in an idealized or overly formal sense.
Some block diagrams and/or flow diagrams are shown in the figures. It will be understood that some blocks of the block diagrams and/or flowchart illustrations, or combinations thereof, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor, create means for implementing the functions/acts specified in the block diagrams and/or flowchart block or blocks.
Accordingly, the techniques of this disclosure may be implemented in hardware and/or software (including firmware, microcode, etc.). In addition, the techniques of this disclosure may take the form of a computer program product on a computer-readable medium having instructions stored thereon for use by or in connection with an instruction execution system. In the context of this disclosure, a computer-readable medium may be any medium that can contain, store, communicate, propagate, or transport the instructions. The computer readable medium can include, for example but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, device, or propagation medium. Specific examples of the computer readable medium include: magnetic storage devices such as magnetic tape or Hard Disk Drives (HDDs); optical storage devices, such as compact disks (CD-ROMs); a memory, such as a Random Access Memory (RAM) or a flash memory; and/or wired/wireless communication links.
Fig. 1 schematically illustrates a schematic diagram of a wavefront of a dual-polarized wideband ridge waveguide slot antenna provided by an embodiment of the present disclosure.
As shown in fig. 1, an embodiment of the present disclosure provides a dual-polarized wideband ridge waveguide slot antenna, including: the antenna comprises a plurality of horizontal polarization units and a plurality of vertical polarization units, wherein the horizontal polarization units and the vertical polarization units are arranged in a staggered mode to form an antenna radiation array surface. The horizontal polarization unit and the vertical polarization unit comprise ridge waveguides and power dividers; the power divider is arranged in the hollow inner space of the ridge waveguide, is connected with the top of the ridge waveguide, is connected with the connector and is used for feeding electricity to the ridge waveguide. Each horizontal polarization unit and each vertical polarization unit comprise a connector which is arranged at the bottom of the horizontal polarization unit and the bottom of the vertical polarization unit.
The ridge waveguide slot antenna excited by the integrated ridge waveguide power divider adopting two polarization modes is arranged in a staggered mode to realize dual polarization of the array surface, and the distance miniaturization of the antenna is realized on the basis of ensuring good quality of a directional diagram in a wide frequency band.
In the embodiment, the antenna radiation front is contacted with the ground through the grounding column, and a stable impedance zero point is provided for the whole radiation front.
Fig. 2A schematically illustrates a front side and a side of a horizontally polarized radiation unit provided by an embodiment of the present disclosure.
As shown in fig. 2A, the horizontally polarized unit is implemented by longitudinal slotting with ridge waveguide. Specifically, a plurality of linear slots are longitudinally formed in the top of the ridge waveguide of the horizontal polarization unit along the extension direction of the ridge waveguide, and every three slots are arranged in a staggered mode according to the central line of the ridge waveguide. The width of the horizontal polarization unit is 7-10mm.
Fig. 3A schematically illustrates a front side and a side of a vertically polarized radiating element provided by an embodiment of the present disclosure.
As shown in fig. 3A, the vertical polarization unit is implemented by using a ridge waveguide splay slot. Specifically, a plurality of splayed slots are formed in the extending direction of the ridge waveguide at the top of the ridge waveguide of the vertical polarization unit, wherein the forming directions of the splayed slots are alternately opposite. The width of the vertical polarization unit is 4-6mm.
As shown in fig. 2B and 3B, ridge waveguide power dividers (the parts indicated by boxes in the bodies of the horizontally polarized cell and the vertically polarized cell) are used in the horizontally polarized cell and the vertically polarized cell to excite the feeds. The ridge inside the power divider is of a step-shaped structure, and the thickness, the height and the shape of each step of the barren waveguide are designed to be not identical, so that impedance matching can be optimized. In addition, the power divider is arranged in the ridge waveguide, and an overlapping shared part exists between the ridge waveguide and the power divider, so that the space is reduced, the size is reduced, and unnecessary loss is reduced.
In the present embodiment, a connector (a portion indicated by a square below the main bodies of the horizontal polarization unit and the vertical polarization unit) is provided at an intermediate position of the bottoms of the horizontal polarization unit and the vertical polarization unit. Since the size of the smallest connector in the market still exceeds the width of the vertical polarization unit in the embodiment, the horizontal polarization unit and the vertical polarization unit are arranged in a staggered manner, so that the mutual interference of the connectors can be avoided. In order to facilitate the installation of the antenna, the connectors at the bottom of each horizontal polarization unit and each vertical polarization unit are positioned on the same plane. Because the thicknesses of each horizontal polarization unit and each vertical polarization unit may be different, the distance between the power divider and the top of the ridge waveguide can be adjusted correspondingly, so that the connectors connected with the power divider are adjusted on the same plane.
In this embodiment, each horizontal polarization unit includes 4-12 linear slots, and each vertical polarization unit includes 4-12 splayed slots, so that the requirement on the azimuth dimension of the antenna and the requirement on the operating bandwidth of 14-20GHz can be met.
In this embodiment, to maximize the distance-to-dimension compression, the ridge waveguide wall thickness of all components is only 0.5-1mm.
Fig. 4 schematically illustrates a set of horizontally polarized radiation elements and vertically polarized radiation elements provided by an embodiment of the present disclosure.
As shown in fig. 4, the horizontal polarization unit and the vertical polarization unit are arranged in a staggered manner to avoid the connectors from interfering with each other. In this embodiment, the width of a set of horizontally polarized cells and vertically polarized cells is less than 11-16mm.
The dual-polarized broadband ridge waveguide slot antenna provided by the embodiment of the disclosure can realize small size and simultaneously has good impedance matching in a broadband range, and ensures good directional diagram characteristics. The method utilizes the antenna radiation array surface to be grounded through the metal shell, provides a stable impedance zero point for the whole radiation array surface, simultaneously adopts a differential feed mode to excite the high-symmetry radiation unit, and utilizes a sleeve slot excitation mode to ensure the bandwidth of the antenna. The antenna method provides good impedance bandwidth, polarization isolation and unit isolation of the radiation unit. Finally, the actual data processing shows that the antenna can be ensured to have good directional diagram polarization isolation under the conditions of transmission and reception.
It will be appreciated by a person skilled in the art that various combinations or/and combinations of features recited in the various embodiments of the disclosure and/or in the claims may be made, even if such combinations or combinations are not explicitly recited in the disclosure. In particular, various combinations and/or combinations of the features recited in the various embodiments and/or claims of the present disclosure may be made without departing from the spirit or teaching of the present disclosure. All such combinations and/or associations are within the scope of the present disclosure.
While the disclosure has been shown and described with reference to certain exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Accordingly, the scope of the present disclosure should not be limited to the above-described embodiments, but should be defined not only by the appended claims, but also by equivalents thereof.
Claims (10)
1. A dual polarized broadband ridge waveguide slot antenna, comprising:
the antenna comprises a plurality of horizontal polarization units and a plurality of vertical polarization units, wherein the horizontal polarization units and the vertical polarization units are arranged in a staggered mode to form an antenna radiation array surface;
the connector is arranged at the bottom of each horizontal polarization unit and each vertical polarization unit;
the horizontal polarization unit and the vertical polarization unit respectively comprise a ridge waveguide and a power divider; the power divider is arranged in the hollow inner space of the ridge waveguide, is connected with the top of the ridge waveguide, is connected with the connector and is used for feeding electricity to the ridge waveguide;
the top of the ridge waveguide of the horizontal polarization unit is longitudinally provided with a plurality of linear gaps along the extension direction of the ridge waveguide;
and a plurality of splayed gaps are formed in the extension direction of the ridge waveguide at the top of the ridge waveguide of the vertical polarization unit.
2. The dual-polarized broadband ridge waveguide slot antenna of claim 1, wherein the ridge waveguide inside the power divider is of a ladder-type structure, and the thickness, height and shape of each ladder are not identical.
3. The dual polarized broadband ridge waveguide slot antenna of claim 1, wherein the wall thickness of the ridge waveguide of the horizontally polarized elements and the vertically polarized elements is 0.5-1mm.
4. The dual polarized broadband ridge waveguide slot antenna of claim 1, wherein the width of the horizontally polarized elements is 7-10mm.
5. The dual polarized broadband ridge waveguide slot antenna of claim 1, wherein the width of the vertically polarized elements is 4-6mm.
6. The dual polarized broadband ridge waveguide slot antenna of claim 1, wherein a width of an adjacent set of the horizontally polarized elements and the vertically polarized elements is less than 11-16mm.
7. The dual polarized broadband ridge waveguide slot antenna of claim 1, wherein each of the horizontally polarized elements comprises 4-12 of the straight slots and each of the vertically polarized elements comprises 4-12 of the splayed slots.
8. The dual polarized wideband ridge waveguide slot antenna of claim 1, wherein the frequency band of said dual polarized wideband ridge waveguide slot antenna is in the range of 14-20GHz.
9. The dual polarized wideband ridge waveguide slot antenna of claim 1 where the antenna radiation front is grounded through a metal housing.
10. The dual polarized broadband ridge waveguide slot antenna of claim 1, wherein the connectors at the bottom of each of the horizontally polarized elements and each of the vertically polarized elements are located on the same plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210983699.2A CN115332768A (en) | 2022-08-16 | 2022-08-16 | Dual-polarized broadband ridge waveguide slot antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210983699.2A CN115332768A (en) | 2022-08-16 | 2022-08-16 | Dual-polarized broadband ridge waveguide slot antenna |
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| CN115332768A true CN115332768A (en) | 2022-11-11 |
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| CN202210983699.2A Pending CN115332768A (en) | 2022-08-16 | 2022-08-16 | Dual-polarized broadband ridge waveguide slot antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115954669A (en) * | 2022-12-29 | 2023-04-11 | 西安电子科技大学 | Polarization isolation frame of dual-polarization waveguide slot phased array |
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2022
- 2022-08-16 CN CN202210983699.2A patent/CN115332768A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115954669A (en) * | 2022-12-29 | 2023-04-11 | 西安电子科技大学 | Polarization isolation frame of dual-polarization waveguide slot phased array |
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