Design of absorptive/transmissive frequency-selective surface based on parallel resonance
Q Chen, S Yang, J Bai, Y Fu - IEEE Transactions on Antennas …, 2017 - ieeexplore.ieee.org
Q Chen, S Yang, J Bai, Y Fu
IEEE Transactions on Antennas and Propagation, 2017•ieeexplore.ieee.orgThis communication presents a novel frequency-selective surface (FSS) with high in-band
transmission at high frequency and wideband absorption at low frequency. It consists of a
resistive sheet and a metallic bandpass FSS separated by a foam spacer. The resistive
element is realized by inserting a strip-type parallel LC (PLC) structure into the center of a
lumped-resistor-loaded metallic dipole. The PLC resonates at the passband of the bandpass
FSS and exhibits an infinite impedance, which splits the resistive dipole into two short …
transmission at high frequency and wideband absorption at low frequency. It consists of a
resistive sheet and a metallic bandpass FSS separated by a foam spacer. The resistive
element is realized by inserting a strip-type parallel LC (PLC) structure into the center of a
lumped-resistor-loaded metallic dipole. The PLC resonates at the passband of the bandpass
FSS and exhibits an infinite impedance, which splits the resistive dipole into two short …
This communication presents a novel frequency-selective surface (FSS) with high in-band transmission at high frequency and wideband absorption at low frequency. It consists of a resistive sheet and a metallic bandpass FSS separated by a foam spacer. The resistive element is realized by inserting a strip-type parallel LC (PLC) structure into the center of a lumped-resistor-loaded metallic dipole. The PLC resonates at the passband of the bandpass FSS and exhibits an infinite impedance, which splits the resistive dipole into two short sections per the surface current; this setup allows for high in-band transmission at high frequency. Below the resonance frequency, the PLC becomes finite inductive and the entire FSS performs as an absorber with the metallic FSS as a ground plane. The surface current distribution on the resistive element can be controlled at various frequencies via the PLC structure. The wideband absorption and high in-band transmission of the proposed design are verified by both numerical simulation and experimental measurements. The potential extension to polarization-insensitive designs is also discussed.
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