Design of Miniaturised Frequency Selective Rasorber with a Wide Absorptive Band

Abstract

Design an FSR with an ultra-wide absorption band. The FSR is composed of an resistor layer and a bandpass FSS. The bandpass FSS is composed of multiple layers of metal layers and a dielectric substrate. This structure does not resonate in the operating band and can be effectively avoided The impact of higher harmonics, thereby achieving ultra-wide stop band. The resistor layer is composed of resistive ink printed on the dielectric board. The resistor layer is placed on the bandpass FSS to obtain an ultra-wide absorption band (7-35GHz) and a passband (1.15-1.60GHz). At the same time, The miniaturized design makes FSR's angular stability good.