Novel two-dimensional/three-dimensional combined dual-polarization ultra-wideband wave absorbing structure

Abstract

The invention relates to a novel two-dimensional / three-dimensional combined dual-polarization ultra-wideband wave absorbing structure. The structure is composed of a first absorbing surface, a secondabsorbing surface and a metal reflecting plate. A three-dimensional transmission line structure is loaded on the first wave absorbing surface. The combination of two two-dimensional absorbing surfacesand one three-dimensional transmission line structure skillfully constructs a head-to-tail multi-resonance, thus realizing wide-band dual-polarization absorbing (7.15 octaves). The wave absorbing structure provided by the invention has the advantages of thin thickness, light weight, low cost and easy design and processing.

Description

technical field [0001] The invention belongs to the field of microwave technology, and relates to a dual-polarization ultra-broadband wave-absorbing structure. Background technique [0002] Microwave absorber is a structure or material that can effectively absorb incident electromagnetic waves and greatly reduce the intensity of reflected electromagnetic waves. It has extensive and important applications in electromagnetic shielding, stealth technology and other fields. Generally speaking, the realization of microwave absorbers mainly includes two main realization methods: absorbing materials and electromagnetic absorbing structures. For example, ferrite absorbing materials can still achieve a high absorbing rate at a very thin thickness, but it is difficult to achieve broadband absorbing and has a high density. Carbon-based absorbing materials have low density and light weight, and can achieve an extremely wide absorbing frequency band, but their thickness is relatively la...

AI Technical Summary

Problems solved by technology

For example, ferrite absorbing material can still achieve a high absorbing rate at a very thin thickness, but it is difficult to achieve broadband absorbing and has a high density.

Carbon-based absorbing materials have low density and light weight, and can achieve an extremely wide absorbing frequency band, but their thickness is relatively large

The two-dimensional circuit analog absorbing structure is usually composed of a metal backplane and its front frequency selective surface and resistors. It has the advantage of light weight, but it has a large thickness and a narrow absorbing frequency band.

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