Design of dual-band tunable bandpass filter with constant absolute bandwidth based on triple transmission path
Jing Guo,
Lirong Qian,
Litian Wang
et al.
Abstract:In this paper, a novel tunable dual-band bandpass filter (BPF) with independently controlled passbands and constant absolute bandwidth (CABW) is proposed. The CABW passbands of designed dual-band BPF are obtained using manageable electric and magnetic mix coupling. Furthermore, the multiple transmission paths from the input port to the output port are extended for extra transmission zeros, which results in modified selectivity of the proposed dual-band BPF. The tunability and switchability of the developed fil… Show more
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