Vol. 64

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2016-12-16

High Selectivity Wideband Bandpass Filter Based on Transversal Signal-Interaction Concepts Loaded with Open and Shorted Stubs

By Liwei Cui, Weimin Wang, Zheng Zhuang, Shulan Li, Yongle Wu, and Yuan'an Liu
Progress In Electromagnetics Research Letters, Vol. 64, 133-139, 2016
doi:10.2528/PIERL16101502

Abstract

A new design of high selectivity wideband bandpass filter based on transversal signal-interaction concepts loaded with open and shorted stubs is proposed in this paper. Two transmission paths are used to realize signal transmission. Path 1 is composed of a T-shaped structure with shorted stub, and Path 2 consists of two open coupled lines loaded with open stubs. A wide five-order passband and high selectivity stopband with four transmission zeros can be achieved in the proposed filter. Finally, a wideband bandpass filter operating at 3 GHz with 3-dB fractional bandwidth of 83.3% (1.55 to 4.05 GHz) is designed, fabricated, and measured. Good agreement between the simulation and experiment is obtained.

Citation


Liwei Cui, Weimin Wang, Zheng Zhuang, Shulan Li, Yongle Wu, and Yuan'an Liu, "High Selectivity Wideband Bandpass Filter Based on Transversal Signal-Interaction Concepts Loaded with Open and Shorted Stubs," Progress In Electromagnetics Research Letters, Vol. 64, 133-139, 2016.
doi:10.2528/PIERL16101502
http://jpier.org/PIERL/pier.php?paper=16101502

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