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2010-09-24
Quadruple-Mode Stub-Loaded Resonator and Broadband BPF
By
Progress In Electromagnetics Research Letters, Vol. 18, 1-8, 2010
Abstract
Novel compact microstrip quadruple-mode stub-loaded resonator and broadband bandpass filter (BPF) are proposed in this letter. As a starting part of designing a quadruple-mode broadband BPF, the initial novel triple-mode open impedance-stepped stub loaded resonator characteristic is investigated to choose its proper dimensions. Based on these pre-determined dimensions of the triple-mode resonator, two identical short-circuited stubs are loaded against the impedance-stepped open stubs in the resonator to generate a tuned resonant mode and a transmission zero in lower stopband which leads to a high rejection skirt. A compact broadband BPF with the quadruple-mode resonator is simulated, fabricated and measured. The measured results agree well with the EM simulations.
Citation
Hong-Wei Deng, Yong-Jiu Zhao, Lu Zhang, Xue-Shun Zhang, and Wei Zhao, "Quadruple-Mode Stub-Loaded Resonator and Broadband BPF," Progress In Electromagnetics Research Letters, Vol. 18, 1-8, 2010.
doi:10.2528/PIERL10061713
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