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Proceedings Paper

Modification of superconducting bandpass filter structures using different image impedances
Author(s): Sang Yeol Lee; Seok Kil Han; Kwang-Yong Kang; Dal Ahn
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Paper Abstract

A new bandpass filter design is presented which uses arbitrary image impedance of the superconducting thin film coupled lines. In order to investigate the performance of different superconducting bandpass filters with different image impedances, we have selected and designed 4-pole Chebyshev 50 (Omega) and 75 (Omega) coupled line superconducting bandpass filters which have the same passband of 11.7 approximately 12.4 GHz. The measured result of the 75 (Omega) coupled line superconducting bandpass filter agrees with the result of the 50 (Omega) coupled line superconducting bandpass filter. The technique used in this paper to change the filter structure is particularly attractive because of its application to improve the power-handling ability of superconducting passive device and its possibility to reduce the size of superconducting thin film microwave device which has the limitation of superconducting thin film size.

Paper Details

Date Published: 1 September 1995
PDF: 9 pages
Proc. SPIE 2559, High-Temperature Microwave Superconductors and Applications, (1 September 1995); doi: 10.1117/12.218173
Show Author Affiliations
Sang Yeol Lee, Electronics and Telecommunications Research Institute (South Korea)
Seok Kil Han, Electronics and Telecommunications Research Institute (South Korea)
Kwang-Yong Kang, Electronics and Telecommunications Research Institute (South Korea)
Dal Ahn, Soon Chun Hyang Univ. (South Korea)


Published in SPIE Proceedings Vol. 2559:
High-Temperature Microwave Superconductors and Applications
James D. Hodge, Editor(s)

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