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Metamaterial Radome

A metamaterial and filter antenna technology, applied in the field of stealth radomes, can solve the problem of the system being difficult to stealth, and achieve the effect of high-efficiency wave transmission

Active Publication Date: 2020-05-12
AIR FORCE UNIV PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present invention provides a metamaterial radome, which solves the problem that the frequency selective surface stealth technology in the prior art is difficult to hide from vertically incident electromagnetic waves or bistatic radar systems

Method used

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Embodiment Construction

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0018] It should be understood that the metamaterial surface is a periodic arrangement of subwavelength structural units on a two-dimensional plane, which is a branch of metamaterial research and development. By adjusting the structure of the constituent units, it is possible to control the propagation direction, polarization mode, propagation mode, phase and other characteristics of reflected or transmitted electromagnetic waves. It has important application pros...

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Abstract

The invention discloses a metamaterial antenna housing, including a polarization rotation metamaterial layer, a honeycomb structure layer and a frequency selection surface layer. The polarization rotation metamaterial layer includes a first dielectric substrate and a first metal structure layer; the frequency selection surface layer includes two second dielectric substrates, a second metal structure layer, a third metal structure layer and a fourth metal structure layer; and the first dielectric substrate and the second metal structure layer are attached to surfaces of two sides of the honeycomb structure layer respectively. Therefore, through arrangement of the polarization rotation metamaterial layer, the honeycomb structure layer and the frequency selection surface layer, the metamaterial antenna housing provided by the embodiment of the invention can realize efficient wave transmission of electromagnetic waves in a radome working band on the frequency selection surface, the metamaterial layer can be utilized to rotate the polarization direction of reflected electromagnetic waves out of the working band, mismatch of polarization modes of the reflected electromagnetic waves and energy detection electromagnetic waves is caused, thereby achieving the purpose of invisibility to an energy detection radar system, and thus the metamaterial antenna housing has important application prospects.

Description

technical field [0001] The invention relates to the technical field of stealth radome, in particular to a metamaterial radome. Background technique [0002] The frequency selective surface is a two-dimensional periodic structure composed of periodically arranged patch units or slot units. It exhibits frequency-selective filtering characteristics for the propagation of electromagnetic waves, that is, the selection characteristics change with frequency. For certain frequency bands The incident electromagnetic waves in the frequency band can all pass through, while the electromagnetic waves in other frequency bands can be completely reflected. Therefore, frequency selective surfaces are also called space electromagnetic filters, and their most important application is to design hybrid radomes. [0003] The frequency-selective surface stealth radome belongs to the category of shape stealth, and the geometric shape of the radome must be used to reflect the electromagnetic wave i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q15/00H01Q15/24H01Q1/42
CPCH01Q1/422H01Q15/0053H01Q15/242
Inventor 闫明宝王甲富屈绍波张介秋郑麟
Owner AIR FORCE UNIV PLA
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