Abstract
This article proposes a compact filter using inductive coupled quarter-wavelength resonators.The coupling between the quarter-wavelength resonators is realized by a short-end stub which behaves as a K-inverter. As a result, the coupling coefficient of the resonators can be easily controlled by the length of the short-end stub. A fourth-order filter is designed and fabricated to demonstrate the proposed method. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1031–1033, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27469
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