volume | PIER Journals

Abstract

This work proposes a compact multiband Symmetrically Stepped Phase Cancellation Reflective Surface (PCRS) that can be used to lower radar cross section (RCS), achieve high Absorption Conversion Ratio (ACR) and high Polarization Conversion Ratio (PCR). Two FR4 layers make up the Symmetrically Stepped PCRS unit cell. With three asymmetrically positioned vias along its diagonal, the Symmetrically Stepped patch is present in the first FR4 layer, which has a thickness (t1) of 1.6 mm and high PCR and ACR. On top of layer 1, there is another layer of FR4 stacked with a thickness (t2) of 3.2 mm to give multiple bands with improved bandwidth efficiency. The PCRS unit cell's entire dimensions, which are only 5 mm x 5 mm x 4.8 mm, are determined by its lowest operational wavelength. Multiple frequencies, 5.6 GHz, 9.8 GHz, 11.3 GHz, and 16.7 GHz, yield RCS reductions of 24 dB, 33 dB, 42 dB, and 24 dB, respectively. 99.9% maximum PCR and 99.9% maximum ACR are obtained with up to 60 degrees of angular stability. Furthermore, in order to minimize RCS and prevent unnecessary reflections from the PCRS, the proposed reflective PCRS unit cells are positioned orthogonally to offer reflection phase cancellation. The most important objective of the proposed research is to lower the RCS while maintaining high PCR and ACR in various frequency bands that are necessary for detection and stealth technologies.

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Dr. Josephine Pon Gloria Jeyaraj

Dr. Sankaranarayanan Jayakumar

Dr. Magudeeswaran Premkumar

Ms. Rajamani Sangeetha