Vol. 116

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2011-05-18

Design of Different Selectivity Dual-Mode Filters with E-Shaped Resonator

By Chao Lei Wei, Bao-Fu Jia, Zhao-Jun Zhu, and Ming-Chun Tang
Progress In Electromagnetics Research, Vol. 116, 517-532, 2011
doi:10.2528/PIER11040808

Abstract

A novel bandpass filter design method of achieving different selectivity based on E-shaped dual-mode resonator is presented. The characteristic of the E-shaped dual-mode resonator is investigated. The technique of utilizing capacitive and inductive input-output cross-coupling to generate two adjustable transmission zeros at stopband is explored intensively. Advantages of this type of filter are not only its dual-mode resonator and miniaturization, but also its controllable transmission zeros. The coupling scheme is presented to model the operations of these filters. Four dual-mode microstrip BPFs have been designed, fabricated, and measured. Both the simulated and measured results are presented. The exemplary filters verify the feasibility of the new design method.

Citation


Chao Lei Wei, Bao-Fu Jia, Zhao-Jun Zhu, and Ming-Chun Tang, "Design of Different Selectivity Dual-Mode Filters with E-Shaped Resonator," Progress In Electromagnetics Research, Vol. 116, 517-532, 2011.
doi:10.2528/PIER11040808
http://jpier.org/PIER/pier.php?paper=11040808

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