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

Volume

21

Issue

3

fYear

2011

fDate

6/1/2011 12:00:00 AM

Firstpage

538

Lastpage

541

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;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2010.2089671

Filename

5648382