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Proceedings Paper

Performance of a high TC superconducting ultra-loss microwave microstrip filter
Author(s): O. D. Pustylnik
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Paper Abstract

High-quality oriented thin films of YBa2Cu30y having transition been madetemperature < 89 K and critical current densities (at 77 K) < 106 A/cm2 bypulsed laser deposition on (1012) non-buffered sapphire substrates. Themicrowave surface resistance (Rs) has been measured between 10 K and 300 K at135 GHz by a copper cavity end-wall-replacement technique. Microwave devicesfabricated from films on non-buffered sapphire have included an K-Bandmodified three-pole Chebyschev filter having an insertion loss of 1,2 dB at60 K. The HTS filter was designed to be a 5 % bandwidth. Our filters outperform similar copper microstrip filters, indicating that practical levels ofHTS performance have been achieved.

Paper Details

Date Published: 30 August 1993
PDF: 6 pages
Proc. SPIE 2104, 18th International Conference on Infrared and Millimeter Waves, 21044W (30 August 1993); doi: 10.1117/12.2298608
Show Author Affiliations
O. D. Pustylnik, Scientific Research Ctr. "Fonon" (Ukraine)

Published in SPIE Proceedings Vol. 2104:
18th International Conference on Infrared and Millimeter Waves
James R. Birch; Terence J. Parker, Editor(s)

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