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Broadband RCS reduction of microstrip antenna in the THz Band

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Abstract

This paper presents a solution to the broadband monostatic and bistatic Radar Cross Section (RCS) reduction of a micrometer wave antenna operating at 3.8 THz without much deterioration in its radiation characteristics. A Frequency Selective Surface (FSS) is proposed which behaves as a linear polarization converter (PC), thus converting linearly polarized electromagnetic waves to cross-polarized waves over two frequency bands. The PC is constituted of a finite geometrical pattern made of copper etched on the top of a dielectric substrate made of polyimide and copper layer at the bottom. Broadband polarization conversion efficiency reaches over 90% for the range of 3.72–4 THz and 5.52–6.28 THz with resonances occurring at 3.84 THz and 5.92 THz at which 99.5% and 99.8% polarization conversion efficiency are acquired, respectively. A meticulous arrangement of PC cells around a planar microstrip antenna is reported for maximum RCS reduction of co-polarized waves from 1 to 10 THz.

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Authors and Affiliations

  1. Department Of Electronics and Communication Engineering, University Of Engineering and Management, Kolkata, India

    Priyanka Das

  2. Discipline of Electronics and Communication Engineering, Indian Institute of Information Technology, Design and Manufacturing Jabalpur, Jabalpur, India

    Ravi Panwar

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  1. Priyanka Das
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  2. Ravi Panwar
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Correspondence to Priyanka Das.

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Das, P., Panwar, R. Broadband RCS reduction of microstrip antenna in the THz Band. Opt Quant Electron 53, 410 (2021). https://doi.org/10.1007/s11082-021-03063-y

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