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NCUEIR > College of Engineering > eedept > Periodical Articles >  Item 987654321/10724

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/10724

Title: Balanced dual-band BPF using only equal-electric-length SIRS for common-mode suppression
Authors: Hsu, Chung-I G.;Hsu, Chih-Chan;Lee, Ching-Her;Chen, Shun-Hsiang
Contributors: 電子工程學系
Date: 2010
Issue Date: 2012-05-29T01:23:56Z
Publisher: VSP BV
Abstract: This paper presents a new balanced dual-band bandpass filter (BPF) designed for 2.4/5.2 GHz wireless local area networks (WLANs). Because adopted in the BPF are only bi-section equal-electric-length stepped-impedance resonators (SIRs), whose dimensions can be determined using analytic formulas, the BPF can be easily and efficiently designed. The inner SIRs are designed to resonate only at the odd-mode resonant frequencies of the input and output SIRs but not at the even-mode ones. This leads to wellbehaved differential-mode (DM) transmission and excellent commonmode (CM) suppression for the BPF. Simulated and measured results are found to agree quite well to each other. The measured minimum DM insertion losses in the two passbands are 2.1 and 2.54 dB, whereas the measured CM rejections are higher than 33 dB in the frequency range from 1 to 7GHz.
Relation: Journal of Electromagnetic Waves and Applications, 24(5/6): 695-705
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