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2015-12-23

A New Compact Microstrip UWB Bandpass Filter with Triple-Notched Bands

By Ruifang Su, Ting Luo, Wenlan Zhang, Junding Zhao, and Zifei Liu
Progress In Electromagnetics Research C, Vol. 60, 187-197, 2015
doi:10.2528/PIERC15092004

Abstract

A new compact microstrip UWB bandpass filter with triple band-notched characteristics is presented in this paper. The initial circuit topology and its corresponding electrical parameters of the basic microstrip UWB BPF are desired by a variation of genetic algorithm (GA) technique. Then, triple-notched bands inside the UWB passband are implemented by coupling a novel triple-mode stepped impedance resonator (TMSIR) to the main transmission line of the basic microstrip UWB BPF. The triple-notched bands can be easily generated and set at any desired frequencies by varying the designed parameters of TMSIR. To illustrate the possibilities of the new approach, a microstrip UWB BPF with triple-notched bands respectively centered at frequencies of 5.2 GHz, 6.8 GHz, and 8.0 GHz is designed and fabricated. Measured results agree well with the predicted counterparts.

Citation


Ruifang Su, Ting Luo, Wenlan Zhang, Junding Zhao, and Zifei Liu, "A New Compact Microstrip UWB Bandpass Filter with Triple-Notched Bands," Progress In Electromagnetics Research C, Vol. 60, 187-197, 2015.
doi:10.2528/PIERC15092004
http://www.jpier.org/PIERC/pier.php?paper=15092004

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