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Dual-band bandpass filter with tunable upper passband

✍ Scribed by Li-Ying Feng; Hong-Xing Zheng; Cheng-Guang Sun; Dan Cheng

Book ID
102950758
Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
523 KB
Volume
53
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

A microstrip dual‐band bandpass filter is developed in this article. Using a pair of square open‐loops coupled with a symmetric ladder‐shaped resonator, frequencies of this filter are operated at 1.57 and 2.45 GHz. The lower resonance frequency is decided by the length of the square resonators, and the higher one is done by the ladder‐shaped resonator. Therefore, both frequency and bandwidth of the upper passband can be controlled flexibly, whereas those of the lower band are fixed. Finally, a filter is fabricated based on the design topology. Measured results have shown very good performance of the filter. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:888–890, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25866

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