Open Access

ARTICLE

EM Analysis of Metamaterial Based Radar Absorbing Structure (RAS) for MillimeterWave Applications

Shiv Narayan¹, Latha S.¹, R M Jha¹

1 CSIR-National Aerospace Laboratories, Bangalore, 560017, India.

Computers, Materials & Continua 2013, 34(2), 131-142. https://doi.org/10.3970/cmc.2013.034.131

Abstract

The EM performance analysis of a multilayered metamaterial based radar absorbing structure (RAS) has been presented in this paper based on transmission line transfer matrix (TLTM) method for millimeter wave applications. The proposed metamaterial-RAS consists of cascaded DPS and MNG layers of identical configurations. It exhibits extremely low reflection (< 42 dB) at 95 GHz and absorbs more than 95% power of incident wave over the frequency range of 90.4- 100 GHz without metal backing for both TE and TM polarizations. In view of aerospace applications, the reflection, transmission, and absorption characteristics of the proposed metamaterial-RAS are also studied at different incident angles (0°, 30°, and 45°) for both polarizations.

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Keywords

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