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Ultra-wideband low-profile low-scattering curved surface phased array antenna

A phased array antenna, low-profile technology, applied in antennas, flexible antennas, folded antennas, etc., can solve problems such as low scattering and low profile, and achieve the purpose of reducing RCS, facilitating conformal integration, and improving the purity of radiation polarization. Effect

Active Publication Date: 2022-03-08
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide an ultra-wideband antenna bandwidth extension, low-profile integration of antenna and scattering reduction structure, curved surface design of ultra-wideband low-scattering antenna in the stealth platform, etc., to provide An ultra-broadband low-profile low-scattering curved surface phased array antenna The present invention proposes two types of ultra-broadband curved surface conformal antenna units (0° and 180°) that have the same amplitude of reflected electromagnetic waves to incident electromagnetic waves and a phase difference of 180°. The staggered arrangement of the antenna units realizes the RCS reduction capability of the target carrier and improves the radiation polarization purity of the antenna; at the same time, by improving the feeding structure of the antenna units, the antenna array has ultra-wideband impedance matching capabilities, and realizes coverage of S-band, C-band, X-band, Ku-band (160% relative bandwidth) 2-18GHz ultra-wideband phased array antenna design, and has the advantages of low profile and low scattering

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Embodiment 1

[0038] This embodiment provides an ultra-broadband curved surface phased array antenna based on striped staggered electromagnetic metasurfaces, the structure of which is as follows figure 1 As shown, it includes: several relative 0° phase response antenna units and several relative 180° phase response antenna units arranged in a striped staggered manner; wherein, the relative 0° phase response antenna unit and the relative 180° phase response antenna unit have Same size, similar structure: all include horizontal upper dielectric board (1), horizontal middle dielectric board (2), vertical feed structure (3), horizontal lower metal floor (4) and standard SSMP connector (5), described The horizontal upper medium plate (1), the horizontal middle medium plate (2) and the horizontal lower metal floor (4) are arranged separately from top to bottom (there is an air medium layer between them), and the horizontal middle medium plate and the horizontal lower layer Air windows are set in ...

Embodiment 2

[0047] This embodiment provides an ultra-broadband curved surface phased array antenna based on a grid-like staggered arrangement of electromagnetic metasurfaces, and its structure is as follows Figure 9 As shown, the only difference between it and Embodiment 1 is that the staggered arrangement of the relative 0° phase response antenna elements and the relative 180° phase response antenna elements is different, wherein, M 0 :N 0 = 1.161; at the same time, there are various forms of staggered arrangement of relative 0° phase response antenna elements and relative 180° phase response antenna elements, as long as the ratio range is satisfied, the purpose of reducing the RCS of the loaded target carrier can be achieved, and It is not limited to the staggered arrangement of stripes and the staggered arrangement of grids.

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Abstract

The invention belongs to the technical field of antenna engineering, and particularly provides an ultra-wide-band low-profile low-scattering curved surface phased-array antenna which is used for solving the problems of ultra-wide-band antenna bandwidth expansion, low-profile integration of an antenna and a scattering reduction structure, curved surface design of an ultra-wide-band low-scattering antenna and the like in a stealth platform. The relative 0-degree phase response antenna unit and the relative 180-degree phase response antenna unit which have the same reflected electromagnetic wave amplitude to incident electromagnetic waves and have the phase difference of 180 degrees are provided, the RCS reduction capacity of a target carrier is achieved through staggered arrangement of the two antenna units, and the radiation polarization purity of the antenna is improved; meanwhile, the antenna array has ultra-wideband impedance matching capability by improving the feed structure of the antenna unit, the design of a 2-18GHz ultra-wideband phased-array antenna covering an S wave band, a C wave band, an X wave band and a Ku wave band (160% relative bandwidth) is realized, and the antenna has the advantages of low profile and low scattering.

Description

technical field [0001] The invention belongs to the technical field of antenna engineering, in particular to an ultra-wideband low-profile low-scattering curved surface phased array antenna. Background technique [0002] With the rapid development of modern wireless technology, phased array antennas are widely used in radar, communication, sensing and other fields due to their advantages such as fast beam scanning speed, flexible pattern shaping, strong anti-interference ability, and high tracking accuracy. Among them, it has become one of the key components on the modern advanced weaponry platform. In the electromagnetic spectrum warfare, there is a strong demand for ubiquitous sensing and precise control of the electromagnetic spectrum, and the need for ultra-wideband precise sensing of the spectrum is put forward. Therefore, the corresponding electromagnetic transceiver phased array antenna components will face the simultaneous realization of ultra-wideband work, The tec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/08H01Q9/04H01Q19/02H01Q21/06
CPCH01Q9/0407H01Q21/06H01Q19/021H01Q1/085
Inventor 程钰间孙建旭吴亚飞李诚佳王洪斌樊勇何宗锐李廷军赵明华杨海宁
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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