[11] “A Highly-Selective Rasorber Based on Second Order Resonance,”IEEE Antennas and Wireless Propagation Letters, DOI 10.1109/LAWP.2019.2954535(2019) 1-1.

作者：X. Xiu, W. Che*, W. Yang, Y. Han, Q. Xue

摘要：A novel frequency-selective rasorber with one highly-selective passband between two absorption bands is presented. Based on the equivalent circuit analysis, the approach of using second-order band-pass response in the lossless layer is adopted to improve the selectivity of the passband. Two-layered structure consisting one lossy and one lossless layer is then used for implementation. The lossy layer is constructed using stub resonators, while aperture coupled resonator (ACR) is used to realize lossless layer and achieve the highly-selective passband. Under normal incidence, the operating bandwidth of the proposed rasorber is 110.6%. One passband with sharp roll-off edge and small insertion loss (0.08 dB) is achieved at 4.3 GHz. For demonstration, one prototype was fabricated and measured, and good agreement is observed accordingly.