Investigation of temperature features forming the passband of microwave HTSc band-pass filter

摘要

Temperature features forming the passband of microwave high-temperature superconducting band-pass filters during temperature change about 87-68.5 K have been investigated. We found that forming of different parts of the passband depends on temperature. Pictures of forming passband at difference temperature were obtained. The filter insertion loss during temperature change about 87-68.5 K was investigated. The insertion loss of a nine-pole YBCO band-pass filter at 83.5 K was about 0.5 dB, at 77 K-about 0.2-0.15 dB, and at 70 K-<0.1 dB, respectively. The temperature stability of filter performance was studied and also characterized. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 3]