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2014 International Symposium on Antennas and Propagation Conference Proceedings
A novel dual-mode dual-band bandpass filter (BPF) is proposed by placing a couple of open-circuited stubs in each corner of the square loop resonator. The two degenerate modes are excited by moving the gaps between the ends of the two open stubs to obtain perturbation effect. No extra perturbation element is needed resulting in flexibility in tuning dual-mode characteristic and a compact structure. The proposed dual-mode dual-band bandpass filter operating at 1.8GHz and 4.6GHz is simulated,doi:10.1109/isanp.2014.7026589 fatcat:i6vv5jem7jemtfhirvb3gpwyja