Realization of HTS trisection band pass filter

Hee Sauk Jhon, Chang Hoon Jeon, Kyoung Bo Han, Seong Sik Myoung, Jong Gwan Yook, Q. X. Jia, Sang Yeol Lee

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

We report characteristics of a high-temperature superconductor (HTS) bandpass filter with the designed center frequency of 11.8 GHz. An epitaxial YBa2Cu3O7-x (YBCO) superconducting thin films were grown on a MgO substrate using the pulsed laser deposition(PLD) technique. Use of HTS films for microwave applications provides a realization of high performance planar filters with narrow passband and low insertion loss. We have designed and fabricated trisection bandpass filters with the center frequency of 11.8 GHz. In order to reduce the filter size, the filter was designed to have modified hairpin-type coupled lines. The film thicknesses were about 500 nm. Superconducting transition temperatures have shown to be about 89 K. The fractional bandwidth of the HTS filter was about 1.1 % and the band rejection ratio was about 296 dB/GHz. Also the performance of superconducting bandpass filter is compared with a copper filter.

Original languageEnglish
Pages (from-to)294-296
Number of pages3
JournalIEEE Transactions on Applied Superconductivity
Volume13
Issue number2 I
DOIs
Publication statusPublished - 2003 Jun
Event2002 Applied Superconductivity Conference - Houston, TX, United States
Duration: 2002 Aug 42002 Aug 9

Bibliographical note

Funding Information:
Manuscript received August 9, 2002. This work was supported by Yonsei University Research Fund. H.-S. Jhon, C. H. Jeon, K. B. Han, S. S. Myoung, and J. G. Yook are with the Department of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, Korea (e-mail: dedo-1@yonsei.ac.kr; jgyook@yonsei.ac.kr). Q. X. Jia is with the Superconductivity Technology Center, Los Alamos National Laboratory, Los Alamos, NM 87545 USA (e-mail: qxjia@lanl.gov). S. Y. Lee is with the Department of Electrical and Electronic Engineering, Yonsei University, Seoul, 120-749, Korea (e-mail: sylee@yonsei.ac.kr) and also with the Superconductivity Technology Center, Los Alamos National Laboratory, Los Alamos, NM 87545 USA (e-mail: sylee@lanl.gov). Digital Object Identifier 10.1109/TASC.2003.813713

All Science Journal Classification (ASJC) codes

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

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