High Tc superconducting CPW bandstop filters for radio astronomy front ends

S. Wallage, J. L. Tauritz, G. H. Tan, P. Hadley, J. E. Mooij

Research output: Contribution to journalArticleResearchpeer-review

Abstract

We have designed and tested a superconducting coplanar waveguide (CPW) bandstop filter consisting of 8 coupled line sections at a center frequency of 1. 53 GHz. A packaged 94. 7% bandwidth low pass Chebychev design yielded a filter with a center frequency of 1. 56 GHz less than 1. 2 dB insertion loss in the passband and better than 28 dB rejection at 20 Kelvin. With a skirt selectivity of 1. 53 (=BW1 dB/BW-28 dB) and low insertion loss this filter is an excellent candidate for suppressing contiguous spurious signals in cooled low-noise receiving front ends.

Original languageEnglish
Pages (from-to)3489-3491
Number of pages3
JournalIEEE transactions on applied superconductivity
Volume7
Issue number2 PART 3
Publication statusPublished - 1997
Externally publishedYes

Fingerprint

bandstop filters
Radio astronomy
Waveguide filters
radio astronomy
Notch filters
Coplanar waveguides
Insertion losses
insertion loss
skirts
waveguides
filters
rejection
low noise
selectivity
bandwidth
Bandwidth

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

Cite this

Wallage, S., Tauritz, J. L., Tan, G. H., Hadley, P., & Mooij, J. E. (1997). High Tc superconducting CPW bandstop filters for radio astronomy front ends. IEEE transactions on applied superconductivity, 7(2 PART 3), 3489-3491.

High Tc superconducting CPW bandstop filters for radio astronomy front ends. / Wallage, S.; Tauritz, J. L.; Tan, G. H.; Hadley, P.; Mooij, J. E.

In: IEEE transactions on applied superconductivity, Vol. 7, No. 2 PART 3, 1997, p. 3489-3491.

Research output: Contribution to journalArticleResearchpeer-review

Wallage, S, Tauritz, JL, Tan, GH, Hadley, P & Mooij, JE 1997, 'High Tc superconducting CPW bandstop filters for radio astronomy front ends' IEEE transactions on applied superconductivity, vol. 7, no. 2 PART 3, pp. 3489-3491.
Wallage, S. ; Tauritz, J. L. ; Tan, G. H. ; Hadley, P. ; Mooij, J. E. / High Tc superconducting CPW bandstop filters for radio astronomy front ends. In: IEEE transactions on applied superconductivity. 1997 ; Vol. 7, No. 2 PART 3. pp. 3489-3491.
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