High T/sub c/ superconducting CPW bandstop filters for radio astronomy front ends [YBa/sub 2/Cu/sub 3/O/sub 7/-LaAlO/sub 3/]
In: IEEE Transactions on Appiled Superconductivity, Jg. 7 (1997-06-01), S. 3489-3491
Online
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Zugriff:
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(=BW/sub 1 dB//BW/sub -28 dB/) and low insertion loss this filter is an excellent candidate for suppressing contiguous spurious signals in cooled low-noise receiving front ends.
Titel: |
High T/sub c/ superconducting CPW bandstop filters for radio astronomy front ends [YBa/sub 2/Cu/sub 3/O/sub 7/-LaAlO/sub 3/]
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Autor/in / Beteiligte Person: | Mooij, J.E. ; Hadley, P. ; Tan, G.H. ; Tauritz, J.L. ; Wallage, S. |
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Zeitschrift: | IEEE Transactions on Appiled Superconductivity, Jg. 7 (1997-06-01), S. 3489-3491 |
Veröffentlichung: | Institute of Electrical and Electronics Engineers (IEEE), 1997 |
Medientyp: | unknown |
ISSN: | 1051-8223 (print) |
DOI: | 10.1109/77.622145 |
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