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A Novel Microstrip Filter Using Three-Mode Stepped Impedance Resonator (TSIR)

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3 Author(s)
Wei Shen ; Center for Microwave & RF Technol., Shanghai Jiao Tong Univ., Shanghai, China ; Xiao-Wei Sun ; Wen-Yan Yin

A novel microstrip filter using three-mode stepped impedance resonator (TSIR) is presented, with its coupling scheme given so as to accurately predict its desired performance. A T-type open stub is introduced into the design of a miniaturized TSIR. It is shown that the developed filter exhibits quasi-elliptic characteristics with sharp skirt and wide stopband. Good agreements are obtained between its measured and simulated S-parameters.

Published in:

IEEE Microwave and Wireless Components Letters  (Volume:19 ,  Issue: 12 )