Title :
Octave tunable lumped-element notch filter
Author :
Jachowski, Douglas R.
Author_Institution :
Microwave Technology Branch, Electronics Science and Technology Division Naval Research Laboratory, Washington, DC 20375 USA
Abstract :
A new lumped-element notch filter architecture with uniform attenuation characteristics over an octave tuning range is described. The approach is demonstrated by a 20 to 55 MHz varactor-tuned two-resonator notch filter with minimum notch attenuation of 40dB, 3dB bandwidths of ∼2.5 MHz, tuning times of less than 3 µs, control voltages below 5V, and passband insertion loss less than 0.2dB from 18 to 60 MHz.
Keywords :
Attenuation; Bandwidth; Filtering theory; Inductors; Microwave filters; Resonator filters; Tuning; absorptive; bandstop; filters; frequency-agile; lumped-element; notch; tunable;
Conference_Titel :
Microwave Symposium Digest (MTT), 2012 IEEE MTT-S International
Conference_Location :
Montreal, QC, Canada
Print_ISBN :
978-1-4673-1085-7
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2012.6258432
