Title :
Realization of a Highly Miniaturized Wideband Bandpass Filter at the UHF Band
Author :
Setoodeh, Sormeh ; Laforge, Paul D. ; Mansour, Raafat R.
Author_Institution :
Univ. of Waterloo, Waterloo, ON, Canada
fDate :
6/1/2011 12:00:00 AM
Abstract :
A niobium-based low temperature superconducting 7-pole bandpass filter with a wide bandwidth at the UHF band is designed and tested. The filter has a relative bandwidth of 80% and is extremely miniaturized with a total dimension of less than 3 mm × 1 mm. The filter topology is that of the bandpass transformed lowpass prototype filter with alternating shunt and series resonators. The filter has a wide spurious free stopband up to 4 GHz. The measured results are in very good agreement with theoretical design predictions.
Keywords :
UHF filters; band-pass filters; niobium; resonator filters; superconducting filters; UHF filter; filter topology; highly miniaturized wideband bandpass filter; lowpass prototype filter; niobium-based low temperature superconducting 7-pole filter; series resonators; shunt resonators; Band pass filters; Delay; Inductors; Integrated circuit modeling; Resonant frequency; Superconducting microwave devices; Wideband; Group delay; UHF filters; lumped element microwave circuits; superconducting filters;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2010.2089671
