Vol. 26

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2011-08-18

A Novel Dual-Mode Bandpass Filter Using Stub-Loaded Defected Ground Open-Loop Resonator

By Xuehui Guan, Bin Wang, Xiaoyan Wang, Shan Wang, and Hai-Wen Liu
Progress In Electromagnetics Research Letters, Vol. 26, 31-37, 2011
doi:10.2528/PIERL11071402

Abstract

A novel dual-mode bandpass filter (BPF) using stub-loaded defected ground open-loop resonator is proposed in this article. Defected arrow-shaped stub is loaded to a defected ground open-loop resonator, and two non-degenerate modes are excited for dual-mode characteristics. Based on even- and odd-mode theory, dual-mode characteristics of the resonator is analysed. Design equations for the defected-ground resonator are investigated. A two-pole dual-mode bandpass filter operating at 2.4 GHz with fractional bandwidth of 7.97% is designed, fabricated, and measured. Good agreement between simulated and measured results verifies the validity of this design methodology.

Citation


Xuehui Guan, Bin Wang, Xiaoyan Wang, Shan Wang, and Hai-Wen Liu, "A Novel Dual-Mode Bandpass Filter Using Stub-Loaded Defected Ground Open-Loop Resonator," Progress In Electromagnetics Research Letters, Vol. 26, 31-37, 2011.
doi:10.2528/PIERL11071402
http://jpier.org/PIERL/pier.php?paper=11071402

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