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Title: 3-D single- and dual-polarized frequency-selective rasorbers with wide absorption bands based on stepped impedance resonator
Authors: Wang, Yihao
Wang, Min
Shen, Zhongxiang
Wu, Wen
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2021
Source: Wang, Y., Wang, M., Shen, Z., & Wu, W. (2021). 3-D single- and dual-polarized frequency-selective rasorbers with wide absorption bands based on stepped impedance resonator. IEEE Access, 9, 22317-22327. doi:10.1109/ACCESS.2021.3054461
Journal: IEEE Access
Abstract: A 3-D frequency-selective rasorbers (FSR) with wide absorption bands at both sides of the transmission window based on stepped impedance resonator (SIR) is presented and investigated in this paper. The proposed FSR features thin thickness, wide absorption bands and lumped-element-free characteristics. The transmission channel is constructed from a parallel waveguide based on SIR to provide the transmission path and reduce the thickness of the whole structure. The absorption channel is filled with magnetic absorber to provide a wide absorption band, while meander-line in shunt connection with the absorber is used to avoid lumped components and to obtain a low insertion loss at the passband. The detailed design concept and analysis are illustrated and the fundamental operating principle of the FSR is demonstrated with the help of an equivalent circuit model (ECM). A design example is provided and it exhibits a passband at 7.1 GHz with a transmission bandwidth of 22.6% for less than 3 dB insertion loss and fractional bandwidth of 128.0% with reflectivity less than -10 dB. Moreover, one dual-polarized FSR is also designed and analyzed to generalize the design strategy. Both single- and dual-polarized prototypes are designed, fabricated, and measured to verify the design concept. Good agreement can be observed between the simulated and measured results.
ISSN: 2169-3536
DOI: 10.1109/ACCESS.2021.3054461
Rights: © 2021 IEEE. This journal is 100% open access, which means that all content is freely available without charge to users or their institutions. All articles accepted after 12 June 2019 are published under a CC BY 4.0 license, and the author retains copyright. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles, or use them for any other lawful purpose, as long as proper attribution is given.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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