Design of Y-slot Frequency Selective Surface Based on Aluminum Honeycomb Structure

This work presents a novel aluminum honeycomb structure with frequency-selective properties. The proposed frequency selective surface (FSS) is formed by loading metal surfaces with a Y-slot on the top and bottom of an aluminum honeycomb cavity. The proposed FSS structure with a thickness of 0.077λ
0
finally exhibits a bandpass response around 11.53 GHz with insertion loss less than 0.5 dB and good polarization stability.