Low-cost and compact metamaterial filter with split-ring-resonator elements for phased arrays

摘要

A single thin-screen metamaterial (MTM) filter with split-ring-resonator (SRR) elements was proposed and demonstrated to block the higher-order harmonics of a K-band phased array (operating between 20.2 and 21.2 GHz) spilling into a close-by astronomic-band (from 22.21 to 22.5 GHz). It also provided at least 22-dB attenuation in the stop-band. In addition, this MTM filter can be very inexpensively fabricated by the modern printed wiring board (PWB) technique and mounted on top of the radiating aperture of a phased array with thousands of elements.