✦ LIBER ✦

Characteristics estimation for high-impedance surfaces based ultrathin radar absorber

✍ Scribed by You-Quan Li; Yun-Qin Fu; Nai-Chang Yuan

Publisher: John Wiley and Sons
Year: 2009
Tongue: English
Weight: 231 KB
Volume: 51
Category: Article
ISSN: 0895-2477
DOI: 10.1002/mop.24453

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✦ Synopsis

Abstract

In this article, an ultrathin Radar Absorbing Material (RAM) based on high‐impedance surfaces (HIS) has been investigated. Simple analytical formulas for the input impedance of HIS RAM are present and the equivalent model of lumped resistor is given to achieve better absorbing performance. From the simulated results, it is seen that the absorbing band of HIS RAM is decided by the reflection phase of HIS in the range ±60°, the measured absorbing frequency band moved toward lower‐frequency than the simulated results, which attribute to the parasitic capacitance introduced by lumped resistors. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 1775–1778, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24453

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✍ S. A. Tretyakov; S. I. Maslovski 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 104 KB

## Abstract It is shown that thin mushroom layers (high‐impedance surfaces realized as regular arrays of small patches at a small distance from a metal surface) can be used as radar‐absorbing structures whose performance does not change with the incidence angle for TM‐polarized waves. The key role