volume | PIER Journals

2011-11-30

A Novel EM Analysis of Double-Layered Thick FSS Based on mm -GSM Technique for Radome Applications

Shiv Narayan,

Dr. Shiv Narayan

Aerospace Electronics and Systems Division

CSIR-National Aerospace Laboratories

India

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Kurapati Prasad,

Dr. Kurapati Prasad

Aerospace Electronics and Systems Division

India

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Raveendranath Nair,

Dr. Raveendranath Nair

Aerospace Electronics and Systems Division?National Aerospace Laboratories, NAL-CSIR

National Aerospace Laboratories

India

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Rakesh Mohan Jha

Dr. Rakesh Mohan Jha

Aerospace Electronics and Systems Division, National Aerospace Laboratories, NAL-CSIR

Council of Scientific and Industrial Research

India

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Progress In Electromagnetics Research Letters, Vol. 28, 53-62, 2012

doi:10.2528/PIERL11101710

Abstract

The EM analysis of double-layered thick FSS structure with low-loss dielectric medium between the FSS layers has been carried out using MM-GSM technique. In this analysis, both evanescent and propagating modes are included that enhances the accuracy of the computation. This method provides less computational complexity in the formulation of FSS structures as compared to other numerical techniques. The cascaded FSS structure shows bandpass response (>95% transmission) over a frequency range from 8.84 GHz to 10.74 GHz. It is found that this FSS structure shows very good in-band transmission characteristics and excellent roll-off characteristics outside the band. Further, the dependence of transmission characteristics on the spacing between the FSS layers is also investigated. The optimum bandpass response is achieved for 0.3λ spacing between the layers. This FSS structure offers superior bandpass response and structural rigidity required for airborne radome applications.

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Shiv Narayan, Kurapati Prasad, Raveendranath Nair, and Rakesh Mohan Jha, "A Novel EM Analysis of Double-Layered Thick FSS Based on mm -GSM Technique for Radome Applications," Progress In Electromagnetics Research Letters, Vol. 28, 53-62, 2012.
doi:10.2528/PIERL11101710

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