Double-layer conductive thin film-based transparent broadband electromagnetic wave absorber

Abstract

The invention provides a double-layer conductive thin film-based transparent broadband electromagnetic wave absorber and aims at solving the technical problem of a narrow application range of an existing wave absorber. The double-layer conductive thin film-based transparent broadband electromagnetic wave absorber comprises a conductive thin film, a first dielectric layer, a second dielectric layer, a third dielectric layer and a bottom plate, wherein transparent dielectric plates are adopted as the first dielectric layer and the third dielectric layer; the transparent dielectric plate or an air dielectric is adopted as the second dielectric layer; the three dielectric layers are arranged from top to bottom to form the dielectric layers with a stacked structure; a transparent conductive thin film is adopted as the bottom plate and is printed on the lower surface of the third dielectric layer; and the conductive film is formed by compounding m*n arrays formed by square transparent conductive thin films and (m+1)*(n+1) arrays formed by cross-shaped transparent conductive thin films and is printed on the upper surface of the first dielectric layer. High light transmission is achieved while the wave absorption bandwidth and the wave absorption rate are ensured; and the double-layer conductive thin film-based transparent broadband electromagnetic wave absorber can be applied to electromagnetic anti-interference of microwave systems, of aircraft cabin glass, a PCB-based novel inter-chip wireless interconnection system and the like, requiring the high light transmission.

Description

technical field

[0001] The invention belongs to the field of microwave electromagnetic stealth technology, and relates to a transparent broadband electromagnetic absorber, in particular to a transparent broadband electromagnetic absorber based on a double-layer conductive film, which can be used for electromagnetic anti-interference in fields requiring high light transmission and electromagnetic compatibility. Background technique

[0002] With the development of electronic information technology, the impact of electromagnetic radiation on the environment is increasing day by day. At airports, aircraft flights are sometimes delayed due to electromagnetic interference; in hospitals, mobile phones often interfere with the normal work of various electronic medical instruments. Therefore, controlling electromagnetic pollution and finding a wave-absorbing device that can resist and weaken electromagnetic radiation has become a major topic in electromagnetics. On the other hand, ...

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