CN112271444B - High-gain dual-polarization SIW-CTS antenna array - Google Patents
High-gain dual-polarization SIW-CTS antenna array Download PDFInfo
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- CN112271444B CN112271444B CN202011220984.6A CN202011220984A CN112271444B CN 112271444 B CN112271444 B CN 112271444B CN 202011220984 A CN202011220984 A CN 202011220984A CN 112271444 B CN112271444 B CN 112271444B
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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
- 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
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
- H01Q1/523—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between antennas of an array
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0086—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
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- Aerials With Secondary Devices (AREA)
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Abstract
The invention discloses a high-gain dual-polarization SIW-CTS antenna array, which comprises: the system comprises a dual-polarization LSG, parallel plates attached to the dual-polarization LSG and a dual-polarization CTS array attached to the parallel plates; the dual-polarization LSG comprises a first dielectric slab and a second dielectric slab attached to the first dielectric slab, the second dielectric slab is provided with SIL, the first dielectric slab is provided with a first SIW (silicon-insulator-semiconductor) horn and a second SIW horn perpendicular to the first SIW horn, and the first dielectric slab is provided with a metal matching structure. Compared with a dual-polarized CTS antenna using other dual-polarized LSGs (waveguide power splitting and paraboloids) for feeding, the dual-polarized CTS antenna has the advantages of compact structure, small size, low profile, low manufacturing cost and great engineering application prospect.
Description
Technical Field
The invention relates to the technical field of SIW-CTS antennas, in particular to a high-gain dual-polarization SIW-CTS antenna array.
Background
With the development of wireless communication systems, the number of users is greatly increased, resulting in increasingly strained spectrum resources. In order to improve the utilization rate of frequency spectrum, the antenna part in the communication system needs to realize dual polarization function. The dual-polarized antenna can simultaneously form a pair of electromagnetic waves with orthogonal polarization modes and the same working frequency. This facilitates frequency reuse, enables simultaneous transmit and receive operation, polarization diversity and polarization agility, and also improves the sensitivity of the communication system and is resistant to multipath fading. In a synthetic aperture radar system, a dual-polarized antenna can assist in obtaining full-polarization information of a target and an environment; in a mobile communication system, a base station polarization separation system of a dual-polarized antenna can effectively eliminate the multipath fading phenomenon of signals; in satellite communication, the dual polarization characteristic of the antenna can improve the utilization rate of frequency spectrum, thereby saving frequency spectrum resources.
In the last 90 th century, continuous Transverse Stub (CTS) antenna arrays were proposed by the american houss airlines, in which Continuous Transverse open stubs were designed on the upper surface of a parallel plate waveguide from which electromagnetic waves in the parallel plate waveguide radiate to free space. CTS antennas have the following advantages over parabolic antennas and other array antennas: (1) The antenna has the efficiency of more than 60 percent, is similar to a parabolic antenna and far exceeds the efficiency of a plane array antenna; (2) the antenna works in a TEM mode, and the working frequency band is wide; (3) The dual/circular polarization work and the beam scanning function are easy to design; (4) The CTS antenna array has the advantages of low profile, easy conformal, simple structure, low cost and capability of being realized by adopting compression molding and electroplating technologies.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a high-gain dual-polarization SIW-CTS antenna array which is a dual-polarization LSG with compact structure, low section and convenient processing. To achieve the above objects and other advantages in accordance with the present invention, there is provided a high gain dual polarized SIW-CTS antenna array comprising:
the system comprises a dual-polarization LSG, parallel plates attached to the dual-polarization LSG and a dual-polarization CTS array attached to the parallel plates;
the dual-polarization LSG comprises a first dielectric plate and a second dielectric plate attached to the first dielectric plate, the second dielectric plate is provided with an SIL (silicon insulator), the first dielectric plate is provided with a first SIW (substrate integrated waveguide) horn and a second SIW horn perpendicular to the first SIW horn, and the first dielectric plate is provided with a metal matching structure.
Preferably, the metal matching structure comprises a first metal matching piece arranged between the first SIW horn and the second SIW horn, a second metal matching piece arranged at two opposite ends of the first SIW horn and the second SIW respectively, a third metal matching piece arranged on the first dielectric plate, and a fourth metal matching piece arranged at the boundary of the first dielectric plate, wherein probes are arranged in the first SIW horn and the second SIW horn.
Preferably, the SIL comprises a plurality of circular shaped metamaterial units and has a circular shape, and the SIL has a decreasing radius gradient from the center to the edge of the circular shaped metamaterial units in a plurality of concentric circles.
Preferably, two adjacent edges of the parallel plate and the first dielectric plate are fixedly connected with terminal reflecting walls, and the terminal reflecting walls on the parallel plate correspond to the terminal reflecting walls on the first dielectric plate in position.
Preferably, coupling gaps are formed in the first dielectric plate and located at the terminal reflection wall, fourth metal matching pieces are fixed at two ends of each coupling gap, and fifth metal matching pieces are arranged on the parallel plates and the fourth metal matching pieces on the first dielectric plate correspondingly.
Preferably, the dual-polarization CTS array includes a third dielectric plate and radiation branches embedded in the third dielectric plate, the orthogonal radiation branches of the array are fully laid on the third dielectric plate, and radiation branch gaps corresponding to the radiation branches are opened on the parallel plates.
Compared with the prior art, the invention has the beneficial effects that: the problem of feed for dual polarization CTS antenna is solved and dual polarization antenna has the characteristics of high gain, high isolation and low cross polarization: the dual-polarized LSG based on the SIL is proposed for the first time, so that the dual-polarized feed structure is more compact; the antenna array adopts a CTS structure to improve the gain of the antenna and increase the bandwidth; a dual-polarized CTS array is designed using orthogonal radiating branches. The feed structure of the antenna mainly comprises an SIL, two orthogonal SIW horns, a coupling gap and a terminal reflecting wall, and a dual-polarization SIL line source feeds a CTS so that a CTS antenna array generates dual-polarization radiation. The dual-polarization CTS array feeds power to the CTS array through the dual-polarization LSG, so that high gain, high isolation, low cross polarization and wider working frequency band of the antenna are realized, the polarization purity of the dual-polarization antenna is ensured, and the problem of feeding the dual-polarization CTS antenna is effectively solved. The gain of 10GHz of the central frequency point of the antenna array is 22dBi, the impedance bandwidth of-10 dB is 9-11 GHz, the isolation is more than 30dB and the cross polarization is less than-30 dB in the working frequency band.
Drawings
FIG. 1 is a schematic illustration of a three-dimensional structure explosion of a high gain dual polarized SIW-CTS antenna array in accordance with the present invention;
FIG. 2 is a SIL (2) top view of a high gain dual polarized SIW-CTS antenna array according to the present invention;
FIG. 3 is a top view of a dual polarized LSG of a high gain dual polarized SIW-CTS antenna array in accordance with the present invention;
FIG. 4 is a top view of a dual polarized CTS antenna array structure of a high gain dual polarized SIW-CTS antenna array in accordance with the present invention;
FIG. 5 is a side view of a dual polarized CTS antenna array of a high gain dual polarized SIW-CTS antenna array in accordance with the present invention.
In the figure: 1. a first SIW horn; SIL;3. a coupling gap; 4. a terminal reflective wall; 5. a third metal matching member; 6. a fourth metal matching piece; 7. a second metal matching member; 8. a first metal matching member; 10. a fifth metal matching member; 11. a radiation branch gap; 12. a radiation branch; 13. a third dielectric plate; 14. parallel plates; 15. a first dielectric plate; 16. a second dielectric plate; 17. and (3) a probe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, a high gain dual polarized SIW-CTS antenna array comprising: the dual-polarization line source array comprises dual-polarization LSGs, parallel plates 14 attached to the dual-polarization LSGs and dual-polarization CTS arrays attached to the parallel plates 14, wherein a dual-polarization line source generating structure is arranged at the bottom of the CTS array and used for generating plane waves;
the dual-polarization LSG comprises a first dielectric plate 15 and a second dielectric plate 16 attached to the first dielectric plate 15, the dielectric constants of the first dielectric plate 15 and the second dielectric plate 16 are different, the dielectric constant of the first dielectric plate 15 is F4B-2 of 2.65, the dielectric constant of the second dielectric plate 16 is TF-2 of 10.2, SIL2 is arranged on the second dielectric plate 16, a first SIW loudspeaker 1 and a second SIW loudspeaker perpendicular to the first SIW loudspeaker 1 are arranged on the first dielectric plate 15, and a metal matching structure is arranged on the first dielectric plate 15, so that the antenna obtains good impedance matching and has the function of adjusting a line source.
Further, the metal matching structure comprises a first metal matching member 8 arranged between the first SIW horn 1 and the second SIW horn, a second metal matching member 7 arranged at two opposite ends of the first SIW horn 1 and the second SIW respectively, a third metal matching member 5 arranged on the first dielectric plate 15, and a fourth metal matching member 6 arranged at the boundary of the first dielectric plate 15, wherein probes 17 are arranged in the first SIW horn 1 and the second SIW horn, the first SIW horn and the second SIW horn are fed through the probes 17, the generated cylindrical wave is converted into a plane wave after passing through the SIL2, the phase of the plane wave is further adjusted through the metal matching structure, the first SIW horn and the second SIW horn are arranged at the edge of the lens, and after the cylindrical wave generated by exciting the probes is adjusted through the SIL2, the plane wave is generated at the other end of the lens, and the phase of the electromagnetic wave generated by the matching metal columns is further adjusted through fine-tuned, so that an ideal line source is generated; the generated line source is coupled to the upper parallel plate through a coupling gap and a terminal reflector, and feeds power to the dual-polarization CTS radiation branch. The SIL2 generates a plane wave propagating in a direction orthogonal to the SIW horn mouth plane of the other polarization, i.e., when one polarized horn is excited, the other polarized horn is hardly affected, thereby producing a high isolation effect.
Further, the SIL2 comprises a plurality of circular metamaterial units and is circular, the radius gradient of the circular metamaterial units in a plurality of concentric circular rings from the center to the edge of the SIL2 is reduced, the corresponding equivalent refractive index can be obtained by adjusting the radius of the circular units in each area, the size of the circular metamaterial is changed in steps in order to obtain the gradient refractive index change required by the Long Bo lens, and the circular metamaterial units are arranged in 10-step quasi-concentric rings in the SIL2 to form the plane lens with the refractive index of Fu Gelong bob law. Being a rotationally symmetric gradient index lens, the focal point of which is located anywhere at the edge of the lens, can convert the cylindrical wave generated by a point source into a planar wave through phase modulation of the SIL 2.
Furthermore, two adjacent edges of the parallel plate 14 and the first dielectric plate 15 are fixedly connected with terminal reflection walls 4, the terminal reflection walls 4 on the parallel plate 14 correspond to the terminal reflection walls 4 on the first dielectric plate 15 in position, the terminal reflection walls 4 are realized through rectangular metal via holes, and the combination of the reflection walls 4 and the coupling gaps 3 on the first dielectric plate 15 couples energy into the parallel plate 14 to feed the dual-polarized CTS antenna.
Further, coupling gaps 3 are formed in the first dielectric plate 15 and located at the terminal reflection wall 4, fourth metal matching pieces 6 are fixed to two ends of each coupling gap 3, and fifth metal matching pieces 10 are arranged on the parallel plates 14 and the fourth metal matching pieces 6 on the first dielectric plate 15 correspondingly.
Furthermore, the dual-polarization CTS array comprises a third dielectric plate 13 and radiation branches 12 embedded in the third dielectric plate 13, and the radiation branches 12 are all composed of rectangular metal through holes, so that the dual-polarization CTS array is convenient to process and has the effect of SIW. The space between two adjacent radiation branches with the same polarization is a waveguide wavelength, so that the directional diagram of the antenna at a central frequency point points to the broadside direction, and simultaneously, the generation of grating lobes is effectively prevented, the third dielectric plate 13 is fully paved with the orthogonal radiation branches 12 of the array, the dual-polarization CTS is formed by orthogonally arranging two groups of 9 element-line polarization CTS branches, and the distance between every two CTS units is a waveguide wavelength, so that the in-phase radiation is ensured. Meanwhile, the distance between the units also meets the requirement of an array in a free space, because a dielectric substrate with the dielectric constant of 2.65 is used, the wavelength of a waveguide is about 0.62 time of the wavelength of the free space, the generation of an array grating lobe can be effectively inhibited, a radiation branch joint gap 11 corresponding to a radiation branch joint 12 is arranged on the parallel plate 14, and electromagnetic energy is radiated to the free space through the radiation branch joint in a linear polarization mode.
The number of devices and the scale of the processes described herein are intended to simplify the description of the invention, and applications, modifications and variations of the invention will be apparent to those skilled in the art.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (1)
1. A high gain dual polarized SIW-CTS antenna array comprising:
the array comprises a dual-polarization LSG, a parallel plate (14) attached to the dual-polarization LSG and a dual-polarization CTS array attached to the parallel plate (14);
the dual-polarization LSG comprises a first dielectric plate (15) and a second dielectric plate (16) attached to the first dielectric plate (15), the second dielectric plate (16) is provided with an SIL (2), the first dielectric plate (15) is provided with a first SIW (substrate integrated waveguide) horn (1) and a second SIW horn which is perpendicular to the first SIW horn (1), and the first dielectric plate (15) is provided with a metal matching structure; coupling gaps (3) are formed in the first dielectric plate (15) and located on the terminal reflecting wall (4), fourth metal matching pieces (6) are fixed to two ends of each coupling gap (3), and fifth metal matching pieces are arranged on the parallel plates (14) and correspond to the fourth metal matching pieces (6) on the first dielectric plate (15);
the metal matching structure comprises a first metal matching piece (8) arranged between a first SIW loudspeaker (1) and a second SIW loudspeaker, second metal matching pieces (7) arranged at two opposite ends of the first SIW loudspeaker (1) and the second SIW respectively, a third metal matching piece (5) arranged on a first medium plate (15) and a fourth metal matching piece (6) arranged at the boundary of the first medium plate (15), wherein probes (17) are arranged in the first SIW loudspeaker (1) and the second SIW loudspeaker;
the SIL (2) comprises a plurality of circular shaped metamaterial units and is circular in shape, and the radius gradient of the circular metamaterial units in a plurality of concentric circular rings from the center to the edge of the SIL (2) is reduced;
the dual-polarization CTS array comprises a third dielectric plate (13) and radiation branches (12) embedded in the third dielectric plate (13), the orthogonal radiation branches (12) of the array are fully paved on the third dielectric plate (13), radiation branch gaps (11) corresponding to the radiation branches (12) are formed in the parallel plates (14), terminal reflecting walls (4) are fixedly connected to two adjacent edges of the parallel plates (14) and the first dielectric plate (15), and the terminal reflecting walls (4) on the parallel plates (14) correspond to the terminal reflecting walls (4) on the first dielectric plate (15).
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| CN202011220984.6A CN112271444B (en) | 2020-11-05 | 2020-11-05 | High-gain dual-polarization SIW-CTS antenna array |
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| CN202011220984.6A CN112271444B (en) | 2020-11-05 | 2020-11-05 | High-gain dual-polarization SIW-CTS antenna array |
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| CN112271444B true CN112271444B (en) | 2023-02-28 |
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| CN113517532B (en) * | 2021-04-06 | 2022-09-02 | 浙江大学 | CTS beam scanning antenna based on multilayer ridge waveguide structure |
| CN115000725B (en) * | 2022-07-26 | 2024-08-06 | 成都国恒空间技术工程股份有限公司 | Four-beam CTS array antenna based on RFIC feed |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110416746A (en) * | 2019-07-19 | 2019-11-05 | 深圳大学 | A kind of wideband millimeter wave antenna unit and aerial array |
| CN110518351A (en) * | 2019-09-17 | 2019-11-29 | 深圳大学 | A kind of dual polarization millimeter wave antenna unit and aerial array |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110416746A (en) * | 2019-07-19 | 2019-11-05 | 深圳大学 | A kind of wideband millimeter wave antenna unit and aerial array |
| CN110518351A (en) * | 2019-09-17 | 2019-11-29 | 深圳大学 | A kind of dual polarization millimeter wave antenna unit and aerial array |
Non-Patent Citations (3)
| Title |
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| "Compact Dual-Polarized Continuous Transverse";Tian Lou.etc;《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》;20190303;第67卷(第5期);全文 * |
| "High Gain and Wide Angle Beam Scanning Antenna Array Based on CTS";Houtong Qiu.etc;《2019 International Applied Computational Electromagnetics Society Symposium-China(ACES)》;20190811;正文第1-2页，图1 * |
| "基于ＳＩＷ 的宽角度波束扫描ＣＰＷ－ＣＴＳ天线阵设计";于英杰等;《电子测量技术》;20171031;第40卷(第10期);全文 * |
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