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2013-03-20

Compact Dual-Mode Double Square-Loop Resonators for WLAN and WiMAX Tri-Band Filter Design

By Ji-Chyun Liu, Feng-Seng Huang, Ching-Pin Kuei, and Chin-Yen Liu
Progress In Electromagnetics Research C, Vol. 38, 101-113, 2013
doi:10.2528/PIERC13012002

Abstract

The improved configurations with dual-mode double-square-loop resonators (DMDSLR) for tri-band application are proposed in this paper. Two sets of loops including double-square-loop and G-shaped loop are involved in the resonators. The resonant frequency equations related to DMDSLR geometries 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 and the couples. To obtain lower insertion loss, higher out-of-band rejection level, wider bandwidth of tri-band, and compact applications, the miniaturized DMDSLR structure is 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


Ji-Chyun Liu, Feng-Seng Huang, Ching-Pin Kuei, and Chin-Yen Liu, "Compact Dual-Mode Double Square-Loop Resonators for WLAN and WiMAX Tri-Band Filter Design," Progress In Electromagnetics Research C, Vol. 38, 101-113, 2013.
doi:10.2528/PIERC13012002
http://jpier.org/PIERC/pier.php?paper=13012002

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