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2011-08-03

Dual-Mode CPW-Fed Double Square-Loop Resonators for WLAN and WiMAX Tri-Band Design

By Chin-Yen Liu, Bing-Hao Zeng, Ji-Chyun Liu, Chih-Chiang Chen, and Dau-Chyrh Chang
Progress In Electromagnetics Research C, Vol. 23, 83-93, 2011
doi:10.2528/PIERC11070303

Abstract

An improved CPW-fed configurations with dual-mode double-square-ring resonators (DMDSRR) for tri-band application is proposed in this paper. The resonant frequency equations related to DMDSRR geometry are introduced for simply designing tri-band bandpass filter (BPF). Resonant frequencies and transmission zeroes can be controlled by tuning the perimeter ratio of the square rings. To obtain lower insertion loss, higher out-of-band rejection level and wider bandwidth of tri-band, the improved coplanar waveguide (CPW) fed and the step impedance resonator (SIR) and meander line dual-mode perturbations are designed. The effective design procedure is provided. The proposed filter is successfully simulated and measured. It can be applied to WLAN (2.45, 5.20 and 5.80 GHz) and WiMAX (3.50 GHz) systems.

Citation


Chin-Yen Liu, Bing-Hao Zeng, Ji-Chyun Liu, Chih-Chiang Chen, and Dau-Chyrh Chang, "Dual-Mode CPW-Fed Double Square-Loop Resonators for WLAN and WiMAX Tri-Band Design," Progress In Electromagnetics Research C, Vol. 23, 83-93, 2011.
doi:10.2528/PIERC11070303
http://jpier.org/PIERC/pier.php?paper=11070303

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