High Tc superconducting CPW bandstop filters for radio astronomy front ends

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

*Korrespondierende/r Autor/-in für diese Arbeit

Publikation: Beitrag in einer FachzeitschriftArtikelBegutachtung

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.

Originalspracheenglisch
Seiten (von - bis)3489-3491
Seitenumfang3
FachzeitschriftIEEE Transactions on Applied Superconductivity
Jahrgang7
Ausgabenummer2
DOIs
PublikationsstatusVeröffentlicht - 1997
Extern publiziertJa

ASJC Scopus subject areas

  • Elektrotechnik und Elektronik
  • Physik und Astronomie (sonstige)

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