Miniaturized Frequency Selective Rasorber Based on Meander-Lines Loaded Lumped Resistors and a Coupled Resonator Spatial Filter.

Zhaoshuzhou Shen; Na Kou; Shixing Yu; Zhao Ding; Zhengping Zhang

This paper presents a miniaturized frequency selective rasorber (FSR) with both wide absorption and transmission bands. The proposed FSR consists of a resistive sheet and a band-pass frequency-selective surface (FSS) with non-resonant constituting elements. The unit cell structure of the resistive sheet is a meander line loaded with four lumped resistors, which generate a wide absorption band from 2.4 to 6.2 GHz, while the layer of FSS is coupled resonator spatial filter (CRSF) that generates a wide transmission band from 7.5 to 10.2 GHz. Furthermore, there is a 10.5 mm air spacer between the resistive and FSS layers. The period of the FSR structure, which maintains its passband and absorption band performance, is only 10 mm (0.08λL). Simulated and measured results are compared and found to show good agreement.

RESONATOR filters; SPATIAL filters; UNIT cell; CELL anatomy; ABSORPTION; BANDPASS filters

Progress in Electromagnetics Research M, 2020, Vol 90, p147

1937-8726

Academic Journal

10.2528/pierm20010503