Reconfigurable microwave-band bandpass filter

This paper presents a novel reconfigurable resonator and proposes a new BPF structure. The proposed BPF has the capability to change the number of reconfigurable resonators in use. The resonator and BPF are fabricated as proof of concept. The measured results show that the proposed structure is effective in independently configuring the f_c, BW, and AT. The tuning of the AT is achieved by changing the number of reconfigurable resonators.