Optimized multilayered wideband absorbers with graded fractal FSS

K. J. Vinoy; K. A. Jose; Vijay K. Varadan; Vasundara V. Varadan

doi:10.1117/12.436597

16 August 2001 Optimized multilayered wideband absorbers with graded fractal FSS

K. J. Vinoy, K. A. Jose, Vijay K. Varadan, Vasundara V. Varadan

Proceedings Volume 4334, Smart Structures and Materials 2001: Smart Electronics and MEMS; (2001) https://doi.org/10.1117/12.436597
Event: SPIE's 8th Annual International Symposium on Smart Structures and Materials, 2001, Newport Beach, CA, United States

Abstract

Various approaches have been followed for the reduction of radar cross section (RCS), especially of aircraft and missiles. In this paper we present the use of multiple layers of FSS-like fractal geometries printed on dielectric substrates for the same goal. The experimental results shown here indicate 15 dB reduction in the reflection of a flat surface, by the use of this configuration with low loss dielectrics. An extensive optimization scheme is required for extending the angle coverage as well as the bandwidth of the absorber. A brief investigation of such a scheme involving genetic algorithm for this purpose is also presented here.

Citation Download Citation

K. J. Vinoy, K. A. Jose, Vijay K. Varadan, and Vasundara V. Varadan "Optimized multilayered wideband absorbers with graded fractal FSS", Proc. SPIE 4334, Smart Structures and Materials 2001: Smart Electronics and MEMS, (16 August 2001); https://doi.org/10.1117/12.436597

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