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In this article, a design method for the reflectionless absorber (RLA) is proposed based on the principle of the band-stop reflectionless filter (RLF). Compared with the traditional absorbing structures, the… Click to show full abstract
In this article, a design method for the reflectionless absorber (RLA) is proposed based on the principle of the band-stop reflectionless filter (RLF). Compared with the traditional absorbing structures, the RLA can effectively absorb the electromagnetic (EM) waves within its operating band with small out-band reflection. Besides, the RLA has layer-independent characteristics due to its small reflection. Therefore, multiband and wideband RLAs can be achieved by simply stacking several single-band RLAs. After theoretical analysis and discussion of the single-band RLA, multiband and wideband RLAs are designed. Finally, two samples are fabricated to verify the presented design method. The theoretical calculated, simulated, and measured results agree well.
Journal Title: IEEE Transactions on Antennas and Propagation
Year Published: 2021
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