Broadband Circuit Analog Absorber Using Low-Cost Frequency Selective Surface

The authors propose a broadband circuit analog absorber using a low-cost frequency selective surface. The center of a Jerusalem cross element was modified to reduce four resistors on each arm to a single resistor. The elements were arranged in a chessboard-like configuration to cancel the cross-polarized reflection generated by the asymmetric shape of the element. The experimental results show the proposed absorber provides 61.1% bandwidth for -10-dB reflection at 6.7 GHz.