Design of Compact Multi-Layered Quad-Band Bandpass Filter

This letter proposes a compact quad-band bandpass filter that is based on a multilayered technique. The filter is designed to have four passbands at 1.575, 2.4, 3.5, and 5.2 GHz for the global positioning system, worldwide interoperability for microwave access, and wireless local area network applic...

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Bibliographic Details
Published inIEEE microwave and wireless components letters Vol. 26; no. 11; pp. 879 - 881
Main Authors Wu, Hung-Wei, Chiu, Chen-Te
Format Journal Article
LanguageEnglish
Published IEEE 01.11.2016
Subjects
Band-pass filters
Compact size
Filtering theory
Impedance
inductive coupled
Passband
quad-band
stepped impedance resonator (SIR)
Substrates
Wireless communication
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Summary:This letter proposes a compact quad-band bandpass filter that is based on a multilayered technique. The filter is designed to have four passbands at 1.575, 2.4, 3.5, and 5.2 GHz for the global positioning system, worldwide interoperability for microwave access, and wireless local area network applications. The filter possesses a multilayered structure for inductively connecting the uniform impedance resonators on the top layer with the stepped impedance resonators and tapped input/output coupling structures on the bottom layer, thereby providing multipath propagation to enhance the filter performance and compact circuit size. The measured results are in favorable agreement with the full-wave simulation results.
ISSN:1531-1309
1558-1764
DOI:10.1109/LMWC.2016.2615082