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A folded substrate integrated waveguide cavity filter using novel negative coupling

✍ Scribed by Rui Wang; Xi-Lang Zhou; Lin-Sheng Wu

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
605 KB
Volume
51
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

This article presents a cross‐coupled folded substrate integrated waveguide (FSIW) cavity bandpass filter. A novel type of negative coupling between FSIW cavities has been investigated and demonstrated. A prototype of four‐pole FSIW cavity bandpass filter has been designed, fabricated with multilayer standard printed circuit board process. The filter has good selectivity which is demonstrated by the measured results, indicating 7.5% bandwidth and more than 14‐dB return loss, with good agreement obtained when compared with the simulated ones. In addition, the rejection band of this filter is quite wide, implying good harmonic rejection. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 866–871, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24181

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