3-D Band-Absorptive Frequency Selective Rasorber Based on Stepped-Impedance Hybrid Transmission/Absorption Channels
International Conference on Microwave and Millimeter Wave Technology（2019）
Abstract
A 3-D band-absorptive frequency selective rasorber based on stepped-impedance hybrid transmission/absorption channels is proposed in this paper. These two channels act as a 3D absorber within its absorption band, while it is like two stacked parallel-plate waveguides (PPWs) below the absorption band. Therefore, the proposed FSR exhibits an absorption band from 3.78 GHz to 7.14 GHz, with a fractional bandwidth of 61.53%, and the cut-off frequency of the passband is 931MHz ( |S21| ≥ -1dB).
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Key words
stacked parallel-plate waveguides,stepped-impedance hybrid transmission/absorption channels,3D band-absorptive frequency selective rasorber,absorption band,frequency 3.78 GHz to 7.14 GHz,frequency 931.0 MHz
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