A frequency-agile bandstop filter technology with tunable stopband attenuation and constant absolute bandwidth is described. The technology is demonstrated by a six-resonator planar microstrip filter with simultaneous varactor-diode tuning of stopband attenuation from 30 dB to 50 dB and of operating frequency from 1.8 GHz to 2.2 GHz, with a stopband bandwidth of 60 MHz and absolute 3 dB bandwidth of less than 390 MHz.
No takes yet. Share an insight, caveat, or question.
Jachowski et al. (2009) studied this question.
Synapse has enriched one closely related paper. Consider it for comparative context: