A Compact Two-Pole X-Band High-Temperature Superconducting Microstip Filter

B. Oh H.T. Kim, Y. H. Choi, S. H. Moon, P. H. Hur, M. Kim, S. Y. Lee, A. G. Denisov

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


In this paper we examine a microstrip line filter with three gaps separated by approximately a quarter wavelength. Two filters, one with gold and the other with YBCO were fabricated. The thickness of top conducting microstrips was 600 nm. The ground plane under the 0.5 mm-thick lanthanum aluminate (LaAlO03) substrate was implemented with a 2 micron-thick gold layer for both filters. These filters showed similar frequency responses with 5 % 3-dB bandwidth. The insertion loss, however, improved from 2.8 dB to 1.5 dB by using the superconductor. The performance of the filter was also tested by employing the three dimensional microwave FEM software, and the simulation result compared well with the measured data.

Original languageEnglish
Pages (from-to)2667-2670
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2
Publication statusPublished - 1995 Jun

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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