Abstract
In order to obtain a wideband passband filter, a compact filter with two open-loop resonators has been designed and fabricated, which has introduced two transmission zeros at the passband's upper frequency area.The proposed topology is demonstrated with a design operating at 5.19 GHz with 19.7% bandwidth. More than 20 dB of spurious suppression from 0 to 3.69 and from 6.27 to 9.71 GHz is demonstrated in the experimental results. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:915–917, 2013; View this article online at wileyonlinelibrary.com. DOI: 10.1002/mop.27415
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