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Dual-mode double-ring resonators for microstrip band-pass-filter applications

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5 Author(s)
Liu, J.C. ; Dept. of Electr. Eng., Ching Yun Univ., Tao-Yuan, Taiwan ; Lu, P.C. ; Shie, C.-H. ; Cheng, C.-S.
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A novel design of a dual-mode resonator with a double-ring structure for band-pass filter applications is presented in this paper. Conventionally, dual-mode ring resonators are used to obtain band-pass filters. Based on voltage/current couplings, a dual-mode double-ring resonator was recently constructed to improve the responses of the conventional dual-mode ring resonator. In order to obtain a low insertion loss, a wide band and higher rejection, three filters using a dual-mode double-ring resonator are designed for 2.4 GHz ISM band applications.

Published in:

Microwaves, Antennas and Propagation, IEE Proceedings  (Volume:151 ,  Issue: 5 )