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2023-01-27
Comb-Shaped Structure Loaded Defected Ground Structure and Its Application in Low-Pass Filters
By
Progress In Electromagnetics Research Letters, Vol. 109, 9-14, 2023
Abstract
A new defected ground structure (DGS) with two transmission zeros is presented for the first time by loading the conventional dumb-bell-shaped (DBS) DGS with the comb-shaped structure. Equivalent circuits are developed and electric parameter extraction is derived. The low-pass filter (LPF) design method based on the proposed new DGS is given. The fabricated filter demonstrates a sharp, wide and high stopband rejection with an ultra-wide 20 dB rejection bandwidth of 21.9fc and the sharp attenuation rate is more than 129.4 dB/GHz.
Citation
Junbao Du, Chuan-Min Wang, Lin Li, and Xian-Chuang Su, "Comb-Shaped Structure Loaded Defected Ground Structure and Its Application in Low-Pass Filters," Progress In Electromagnetics Research Letters, Vol. 109, 9-14, 2023.
doi:10.2528/PIERL22111401
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