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Metamaterial phased array antenna with wide-angle beam scanning

A phased array antenna, wide-angle scanning technology, used in radar detection and mobile satellite communications, can solve problems such as scanning blind spots, and achieve good cross-polarization characteristics or circular polarization axis ratio characteristics, good active impedance Match and improve the effect of radiation pattern

Inactive Publication Date: 2016-02-24
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this antenna form is prone to scanning blind spots

Method used

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  • Metamaterial phased array antenna with wide-angle beam scanning
  • Metamaterial phased array antenna with wide-angle beam scanning
  • Metamaterial phased array antenna with wide-angle beam scanning

Examples

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Embodiment Construction

[0025] Below, combine Figure 1 to Figure 3 The present invention is further described.

[0026] A wide-angle scanning metamaterial phased array antenna includes a plurality of phased array antenna units, and the array form of the phased array antenna units is flexible, and can be either a square array or a triangular array. Each phased array antenna unit includes a metal waveguide 4 and a loading medium 5 filled in the metal waveguide, the lower port of the metal waveguide 4 is the feeding port 6, and the upper port of the metal waveguide 4 is the radiation port. A metamaterial cladding 2 is erected above the radiation port of the array antenna unit. The metamaterial coating 2 is composed of a radio frequency board 7 and a plurality of subwavelength metal patches 8 , and the subwavelength metal patches 8 are printed on the upper surface of the radio frequency board 7 . The array period of the phased array antenna unit is an integer multiple of the subwavelength metal patch ...

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Abstract

The present invention relates to a metamaterial phased array antenna with wide-angle beam scanning. The phased array antenna is a planar structure and is formed by periodically arranging a plurality of antenna units. A typical phased array antenna unit is formed by a metal waveguide, a loading media and a feeder port. The array plane of the phased array antenna is covered by a metamaterial to play the role of impedance matching in a wide-angle beam scanning range. According to the phased array antenna in the invention, the sending and receiving of an electromagnetic signal can be realized in the wide-angle range, the radiation efficiency of the antenna is improved, and the cross polarization characteristic or circular polarization axial ratio characteristic of radiation waves is improved.

Description

technical field [0001] The phased array antenna involved in the invention can realize good active impedance matching during the large-angle scanning process of the beam, thereby improving the radiation efficiency of the antenna system and improving the radiation pattern of the antenna. The metamaterial phased array antenna supports linearly polarized electromagnetic fields or circularly polarized electromagnetic fields, and the cross-polarized or circularly polarized axial ratio characteristics of the radiation field are good. The invention is applicable to technical fields such as radar detection and mobile satellite communication. Background technique [0002] The phased array antenna has a low profile, is easy to conform to the carrier, and can quickly and accurately control the direction of the radiation beam. It has been widely used in the field of radar detection, and has great application prospects in the field of mobile communication. [0003] In order to realize th...

Claims

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Application Information

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IPC IPC(8): H01Q1/52H01Q13/06H01Q21/00
Inventor 何应然张宙韩国栋王焕菊肖松丁宁
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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