Compact two-pole X-band high-temperature superconducting microstrip filter

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

Research output: Contribution to journalArticle

4 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 (LaAlO3) 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 pt 3
Publication statusPublished - 1995 Jun 1
Externally publishedYes


ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

Cite this

Oh, B., Kim, H. T., Choi, Y. H., Moon, S. H., Kim, M., Kim, M., ... Denisov, A. G. (1995). Compact two-pole X-band high-temperature superconducting microstrip filter. IEEE Transactions on Applied Superconductivity, 5(2 pt 3), 2667-2670.