Design of dual-mode dual-band bandpass filters with controllable frequencies for multimode wireless communication applications

A flexible approach for designing dual-mode dual-band bandpass filters with controllable passband frequencies is presented. Two dual-mode dual-band bandpass filters are proposed for experimental verification. The first filter, whose two passbands are centered at 3.4 and 5.5 GHz with the correspondin...

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Bibliographic Details
Published in:Journal of electromagnetic waves and applications 2013-11, Vol.27 (17), p.2176-2189
Main Authors: Wu, Yan-liang, Zhong, Xuan-ming, Xiong, Xiang-zheng, Liao, Cheng
Format: Article
Language:English
Subjects:
bandpass filter
dual-band
dual-mode
stub-loaded open-ended resonator
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Summary:A flexible approach for designing dual-mode dual-band bandpass filters with controllable passband frequencies is presented. Two dual-mode dual-band bandpass filters are proposed for experimental verification. The first filter, whose two passbands are centered at 3.4 and 5.5 GHz with the corresponding fractional bandwidth of 19 and 13%, respectively, is suitable for the applications of worldwide interoperability for microwave access (WiMAX) and wireless local area network. The second filter, whose two passbands are centered at 4 and 7.4 GHz with the corresponding fractional bandwidth of 25 and 13%, respectively, is suitable for the downlink of C-band and X-band satellite communication systems. Both filters have been designed, fabricated, and measured. The measured results show good agreements with those of the simulation.
ISSN:0920-5071
1569-3937
DOI:10.1080/09205071.2013.835702