Dual band polarization insensitive frequency selective surface absorber

Publications

Dual band polarization insensitive frequency selective surface absorber

Year : 2019

Publisher : Institute of Electrical and Electronics Engineers Inc.

Source Title : 2019 IEEE MTT-S International Microwave and RF Conference, IMARC 2019

Document Type :

Abstract

This work presents dual band, polarization insensitive and angular stable radar absorber structure. Here, proposed absorber unit cell has two resonator structures M and N. Each resonator provides absorption at distinct frequencies in X and Ku band. Simulation results in different cases show that the structure is polarization insensitive and angular stable up to 600. Calculated effective impedance plot and surface current distribution at the top and bottom surface supports the absorption mechanism at the resonance frequencies. To verify the simulations, a prototype of absorber is fabricated on FR-4 substrate and tested in an anechoic environment.