NDLI: Double-layer ultra-thin artificial magnetic conductor structure for wideband radar cross-section reduction

Content Provider	IET Digital Library
Author	Zaker, Reza Sadeghzadeh, Arezoo
Abstract	A novel double-layer chessboard-like configuration is proposed to reduce radar cross-section (RCS) in microwave and mm-Wave bands. This structure is composed of two artificial magnetic conductor cells. One of these cells consists of four square patches on substrate and the other one is formed only by substrate without any copper on it. Despite the simple design of this structure, it has a big influence on significantly expanding the bandwidth of RCS reduction (RCSR). In comparison with the other works, the measured bandwidth of 10 dB RCSR is broadened to 113.33% (16.43–59.4 GHz). This wideband behaviour is achieved by effectively controlling the ratio between two dielectric constants and the ratio between their thicknesses and so the effective dielectric constant which adjusts the positions of all resonances. Although this structure contains two layers, its overall thickness is 1.4 mm, which is less than the ones that the recent works have. Measurements and simulations are performed for both monostatic and bistatic RCSs with the best number of the unit cells in the chessboard-like structure. The design, simulations, semi-analytical expressions and fabrication are presented and the measurements show an excellent agreement with the simulations.
Starting Page	1601
Ending Page	1607
Page Count	7
ISSN	17518725
Volume Number	12
e-ISSN	17518733
Issue Number	Issue 9, Jul (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-map/12/9
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-map.2017.1019
Journal	IET Microwaves, Antennas & Propagation
Publisher Date	2018-03-28
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Bandwidth 16.43 GHz to 59.4 GHz Bistatic RCS Dielectric Constant Double-layer Chessboard-like Configuration Double-layer Ultrathin Artificial Magnetic Conductor Cell Structure Electromagnetic Metamaterials Frequency Selective Surface Gain 10 DB Microwave Material Monostatic RCS Radar Cross Section Radar Equipment RCSR Size 1.4 Mm System And Application Wideband Radar Cross-section Reduction
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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