CN112736475B - Double-frequency-band cone/pen-shaped composite beam nested antenna - Google Patents
Double-frequency-band cone/pen-shaped composite beam nested antenna Download PDFInfo
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- CN112736475B CN112736475B CN202011233280.2A CN202011233280A CN112736475B CN 112736475 B CN112736475 B CN 112736475B CN 202011233280 A CN202011233280 A CN 202011233280A CN 112736475 B CN112736475 B CN 112736475B
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- 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
- H01Q13/02—Waveguide horns
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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
- 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
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- 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
- H01Q13/02—Waveguide horns
- H01Q13/0208—Corrugated horns
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
- H01Q5/28—Arrangements for establishing polarisation or beam width over two or more different wavebands
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
- H01Q5/55—Feeding or matching arrangements for broad-band or multi-band operation for horn or waveguide antennas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a dual-band cone/pen-shaped composite beam nested antenna, which particularly comprises an S-band cone beam antenna and a Ku-band pen-shaped beam dual-polarized antenna. The S-band cone-beam antenna is a coaxial horn, and four coaxial probes are used for feeding, so that a cone-beam pattern is realized. The Ku-band pencil-beam dual-polarized antenna comprises a circular-port corrugated horn, a square-round waveguide converter and an orthogonal mode coupler, wherein a common port of the orthogonal mode coupler is connected to the circular-port corrugated horn through the square-round waveguide converter; the antenna realizes the dual polarization function of the antenna through the feed of the through port waveguide and the coupling port waveguide of the orthogonal mode coupler. The invention realizes the simultaneous operation of cone/pen-shaped beams, has smaller antenna size, and solves the problems that the cone/pen-shaped beams cannot simultaneously operate, the target polarization information is single and the like in the existing antenna.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a dual-band cone/pen-shaped composite beam nested antenna.
Background
The cone beam antenna pattern is omni-directional radiation on the azimuth plane, the maximum radiation direction on the nodding plane has a certain included angle with the normal direction, and the radiation in the normal direction is very small. Due to the advantage of a large detection angle range, cone beam antennas are widely used for detecting objects in a lateral angular range, but have a detection dead zone for forward objects. The pencil-beam antenna has the advantages of symmetrical beam, low side lobe and the like, and the maximum radiation direction is the normal direction, and is often used for detecting a forward target. But the forward detection angle range is smaller when the antenna gain is larger. Therefore, the target detection angle range of the detector can be effectively enlarged through cone/pen-shaped wave beam combination.
In addition, different targets have different polarization scattering characteristics, and the detection probability of the targets can be improved and target identification can be realized by utilizing the polarization scattering characteristics of the targets. Meanwhile, the complex electromagnetic environment in the information war can reduce the target detection probability of the detector and increase the false alarm probability; in order to improve the target detection reliability of the detector in a complex electromagnetic environment, double-frequency combined detection can be adopted to improve the anti-interference capability of the detector.
Document 1 (Liu Qian. Study of cone/pencil beam reconfigurable antenna and cone beam scanning antenna [ D ]. Jiangsu: university of south Beijing technology, 2018.) uses a single pole double throw switch to switch the cone beam and pencil beam of the antenna, but cannot realize simultaneous operation of the cone/pencil beam of the antenna, and requires a relatively complex circuit to realize switching control of the beams. Document 2 (Shi-Shan Qi, wen Wu and Da-Gang fang. Dual/Single Band Conical-Beam Nested Horn Antennas with Dual/Single Pointing Angles [ J ]. IEEE Transactions on Antennas and Propagation,2012,60 (10): 4911-2915.) implements an X/Ka dual-band cone beam antenna, which has problems that a forward target cannot be detected, and target polarization information is single due to nulling characteristics of a directivity pattern.
Disclosure of Invention
The invention aims to provide a dual-band cone/pen-shaped composite beam nested antenna, which realizes simultaneous operation of cone/pen-shaped beams, has smaller antenna size, and solves the problems that the cone/pen-shaped beams cannot simultaneously operate, the target polarization information is single and the like in the existing antenna.
The technical scheme for realizing the invention is as follows: the antenna structure comprises an S-band cone-beam antenna and a Ku-band pencil-beam dual-polarized antenna; the S-band conical beam antenna takes a Ku-band pencil-beam dual-polarized antenna as an axis to form a coaxial nested horn, and four symmetrical coaxial probes are adopted for feeding; the Ku-band pencil-beam dual-polarized antenna consists of a radial slotted circular-port corrugated horn, a square-circular waveguide converter and an orthogonal mode coupler.
The Ku-band pencil-beam dual-polarized antenna uses an orthogonal mode coupler as a dual-polarized signal feed end, a common port of the orthogonal mode coupler is connected to a radial slotted circular-port corrugated horn through a square-round waveguide converter, and a corrugated horn radiation pattern presents pencil beams.
The antenna feed adopts four symmetrical coaxial probes, a TEM mode is excited in a coaxial nested horn cavity, the antenna radiation pattern is rotationally symmetrical, and a conical wave beam with a null feature in the axial direction is presented.
Compared with the prior art, the invention has the remarkable advantages that:
(1) The S wave band of the dual-band cone/pen-shaped composite wave beam antenna adopts a nested structure, and has small volume; the antenna works in two different frequency bands, and two conical beams and two pen-shaped beams can work simultaneously;
(2) The Ku wave band structure of the pencil-shaped wave beam antenna is a dual-polarized antenna, and the dual-polarized information anti-interference capability in a complex electromagnetic environment is enhanced on the basis of a large cone-beam detection range.
Drawings
Fig. 1 is a three-dimensional block diagram of one embodiment of a dual band cone/pencil-beam nested antenna of the present invention.
Fig. 2 is a three-dimensional structure diagram of an S-band antenna of an embodiment of a dual band cone/pencil-shaped composite beam nested antenna of the present invention.
Fig. 3 is a schematic structural diagram of the Ku band pencil-beam dual-polarized antenna of the present invention.
Fig. 4 is a Ku band antenna pass-through port return loss for one embodiment of a dual band cone/pencil-shaped composite beam nested antenna of the present invention.
Fig. 5 is a simulation result of return loss of a coupling port of a Ku band antenna according to an embodiment of the dual band cone/pencil-shaped composite beam nested antenna of the present invention.
Fig. 6 is a simulation result of isolation between a Ku band antenna through port and a coupling port of an embodiment of the dual-band cone/pencil-shaped composite beam nested antenna of the present invention.
Fig. 7 is an E-plane and H-plane antenna radiation pattern at a 12GHz frequency point when a Ku-band antenna through port feed of one embodiment of the dual band cone/pencil-shaped composite beam nested antenna of the present invention.
Fig. 8 is a main polarization and cross polarization pattern of an E-plane at a 12GHz frequency point when a Ku-band antenna through port of an embodiment of a dual-band cone/pencil-shaped composite beam nested antenna of the present invention is fed.
Fig. 9 is a main polarization and cross polarization pattern of an E-plane at a frequency point of 12GHz when a coupling port of a Ku-band dual-polarized antenna of an embodiment of the dual-band cone/pencil-shaped composite beam nested antenna of the present invention is fed.
Fig. 10 shows the return loss of the S-band cone-beam antenna of this embodiment. As can be seen from the figure, the return loss of the antenna is lower than-10 dB in the frequency range from 2.2GHz to 3 GHz.
Fig. 11 shows the radiation pattern at 2.6GHz of the S-band cone-beam antenna of this embodiment. As can be seen from the figure, the antenna gain can reach 10.6dBi.
Detailed Description
The invention discloses a dual-band cone/pen-shaped composite beam nested antenna, which is characterized in that the antenna structure consists of an S-band cone beam antenna and a Ku-band pen-shaped beam dual-polarized antenna. The S-band conical beam antenna takes a Ku-band pencil-beam dual-polarized antenna as an axis to form a coaxial nested horn, and four coaxial probes are adopted for feeding, so that a conical beam pattern is realized. The Ku-band pencil-beam dual-polarized antenna comprises a circular-port corrugated horn, a square-round waveguide converter and an orthogonal mode coupler, wherein a common port of the orthogonal mode coupler is connected to the circular-port corrugated horn through the square-round waveguide converter; the antenna realizes the dual polarization function of the antenna through the feed of the through port waveguide and the coupling port waveguide of the orthogonal mode coupler.
Preferably, the coaxial inner core of the antenna is a Ku waveguide antenna square-round waveguide converter, and the S-band antenna horn and the Ku-band antenna horn are of a nested horn structure.
Preferably, the antenna feed employs four coaxial probes exciting a TEM mode in a coaxial cavity, the antenna radiation pattern being rotationally symmetric, presenting a cone beam with nulling features in the axial direction.
Preferably, the Ku band pencil beam dual-polarized antenna adopts a radial slotted corrugated horn to realize an antenna pattern with good axial symmetry.
Preferably, the Ku-band pencil-beam dual-polarized antenna quadrature mode coupler comprises a common port, a through port and a coupling port, wherein the common port adopts a stepped impedance matcher to pass through the through port, and a quarter-wavelength matching line and a coupling hole are used between the common port and the coupling port.
The invention is further described below with reference to the accompanying drawings.
The dual-band cone/pencil-shaped composite beam nested antenna provided by the invention, as shown in figure 1, comprises an S-band cone beam antenna 1 and a Ku-band pencil-shaped beam dual-polarized antenna 2, and is made of aluminum alloy.
As shown in fig. 2, the S-band cone-beam antenna 1 includes a radiation horn 3, coaxial feed probes 4 and coaxial waveguides 5, the number of the coaxial probes is four, and the included angle between every two probes is 90 °.
Further, the S-band cone beam antenna radiates the caliber R of the horn 3 Coaxial waveguide outer conductor radius R =190 mm 4 Coaxial waveguide inner conductor radius R =98 mm 5 ＝15mm。
As shown in fig. 3, the Ku band pencil-beam dual-polarized antenna 2 includes a radial slotted circular-port corrugated radiating horn 6, a square-circular waveguide converter 7, and a quadrature mode coupler 8, the circular-port corrugated horn radiating horn 6 being connected to the quadrature mode coupler 8 through the circular waveguide converter 7.
Further, the grooving depth d of the circular-mouth corrugated horn radiating horn 6 n From the mouth of the horn
The individual wavelengths gradually transition to +.>
The relation between the width t of the groove wall and the width w of the groove is t < 0.5w. The quadrature mode coupler comprises a common port 9, a through port 11 and a coupling port 10, wherein the common port 9 is connected with the through port 11 by adopting a stepped impedance matcher 14, and the common port 9 is matched with the coupling port 10 by adopting a quarter-wavelength matching line 13 and a coupling hole 12.
Further, the stepped impedance matcher 14 adopts a chebyshev third-order impedance transformer, and has a specific size of
a×b 1 ×l 1 ＝19.05mm×11.46mm×8.80mm，a×b 2 ×l 2 ＝19.05mm×13.64mm×15.00mm，a×b 3 ×l 3 ＝19.05mm×16.24mm×8.80mm。
Further, the quarter wavelength match line 13 has a wavelength line size of:
a 4 ×b 4 ×l 4 ＝16.80mm×6.80mm×8.80mm。
further, the coupling hole 12 has the following dimensions:
a 5 ×b 5 ×l 5 ＝12.60mm×2.60mm×2.20mm。
further, the common port 9 is square, and has a size of:
a×a×l＝19.05mm×19.05mm×10.00mm。
fig. 4 shows the return loss of the through port of the Ku-band dual-polarized antenna of this embodiment. As can be seen from the graph, the return loss is lower than-21 dB in the frequency range from 11GHz to 13 GHz.
Fig. 5 shows the return loss of the coupling port of the Ku-band dual-polarized antenna of this embodiment. It can be seen from the figure that the return loss is due to-12 dB in the operating frequency band in the range of 11 GHz-13 GHz.
Fig. 6 shows the isolation between the through port and the coupling port of the Ku-band dual-polarized antenna according to this embodiment. As can be seen from the graph, the isolation is better than-55 dB in the range of 11 GHz-13 GHz, and the isolation performance is excellent.
Fig. 7 shows radiation patterns of the E-plane and H-plane antennas at a frequency point of 12GHz when the Ku-band dual-polarized antenna of the present embodiment is fed through a port. As can be seen from the figure, the antenna radiation pattern has good axial symmetry.
Fig. 8 shows a main polarization and cross polarization pattern of an E-plane at a frequency point of 12GHz when the Ku-band dual-polarized antenna of the present embodiment is fed through a port. As can be seen from the figure, the antenna cross polarization ratio at the feed through port is better than 55dB in the maximum radiation direction.
Fig. 9 shows a main polarization and cross polarization pattern of an E-plane at a frequency point of 12GHz when the coupling port of the Ku-band dual-polarized antenna of the present embodiment is fed. As can be seen from the figure, the antenna cross polarization ratio at the maximum radiation direction is better than 60dB when the coupling port is fed.
Fig. 10 shows the return loss of the S-band cone-beam antenna of this embodiment. As can be seen from the graph, the return loss is lower than-10 dB in the frequency range from 2.2GHz to 3 GHz.
Fig. 11 shows a E, H plane radiation pattern at 2.6GHz for the S-band cone-beam antenna of this embodiment. As can be seen from the figure, the antenna gain can reach 10.6dBi.
Claims (3)
1. The utility model provides a compound wave beam nested antenna of dual-band awl/pen shape which characterized in that: the antenna consists of an S-band conical beam antenna (1) and a Ku-band pencil-beam dual-polarized antenna (2); the S-band conical beam antenna (1) takes a Ku-band pencil-beam dual-polarized antenna (2) as an axis to form a coaxial nested horn, and four symmetrical coaxial probes are adopted for feeding; the Ku-band pencil-beam dual-polarized antenna (2) consists of a radial slotted circular-opening corrugated horn (6), a square-circular waveguide converter (7) and an orthogonal mode coupler (8).
2. The dual band cone/pencil beam nested antenna of claim 1, wherein: the Ku band pencil-beam dual-polarized antenna (2) uses an orthogonal mode coupler (8) as a dual-polarized signal feed end, and a common port of the orthogonal mode coupler (8) is connected to a radial slotted circular-port corrugated horn (6) through a square-round waveguide converter (7), and a corrugated horn radiation pattern presents pencil beams.
3. The dual band cone/pencil beam nested antenna of claim 1, wherein: four symmetrical coaxial probes are adopted for feeding of the S-band conical beam antenna (1), a TEM mode is excited in a coaxial nested horn cavity, an antenna radiation pattern is rotationally symmetrical, and conical beams with null characteristics in the axial direction are displayed.
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| CN202011233280.2A CN112736475B (en) | 2020-11-06 | 2020-11-06 | Double-frequency-band cone/pen-shaped composite beam nested antenna |
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| CN202011233280.2A CN112736475B (en) | 2020-11-06 | 2020-11-06 | Double-frequency-band cone/pen-shaped composite beam nested antenna |
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| CN112736475B true CN112736475B (en) | 2023-06-23 |
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| CN114759335B (en) * | 2022-04-25 | 2023-03-31 | 成都天锐星通科技有限公司 | Orthogonal mode coupler and dual linear polarization feed source |
| CN116598784B (en) * | 2023-07-10 | 2023-11-07 | 成都瑞雪丰泰精密电子股份有限公司 | 500-750 GHZ conical corrugated antenna, machining tool combination thereof and micro-machining method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102422486A (en) * | 2009-03-11 | 2012-04-18 | 雷斯潘公司 | High gain metamaterial antenna device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102422486A (en) * | 2009-03-11 | 2012-04-18 | 雷斯潘公司 | High gain metamaterial antenna device |
Non-Patent Citations (1)
| Title |
|---|
| "A Novel Conical/Pencil Pattern Reconfigurable Antenna for Fuze Applications";Qian Liu 等;《2018 International Conference on Microwave and Millimeter Wave Technology (ICMMT)》;20181206;全文 * |
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