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Double E-Shaped Reflection Type Polarization Converter For Radar Cross Section Reduction

Shyam Sundar Pati, Soumik Dey, Swaroop Sahoo,
Published in IEEE
2021
Pages: 839 - 842
Abstract

This paper presents a new compact unit cell for reflection-type linear co to cross-polarization conversion. The metasurface is printed on a perfect conductor-backed dielectric substrate. The unit cell consists of double E-shaped resonators. The structure exhibits a broadband linear cross conversion from 6.46 - 14.07 GHz (7.61 GHz or 74.2 %) with a polarization conversion ratio (PCR) is > 90 %. The converter response is found to be stable at a high incidence angle of > 30°. Periodicity of the unit cell is 0.38 λ 0 , where λ 0 is the free space wavelength at the center frequency of the operating range. This proposed converter can be used for stealth technology for radar cross-section (RCS) reduction. At frequency 9.8 GHz, the 4 x 4 array of the converter reduces the RCS by more than 21 dB for both monostatic and bistatic conditions.

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