Novel band-pass filter utilizing S-shaped slot line resonators

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Colleges, School and Institutes

External organisations

  • Chalmers Tekniska Hogskola
  • Chalmers University
  • Department of Microelectronics MC-2


A novel band-pass filter is designed and verified experimentally. The filter consists of five S-shaped slot-line resonators, which are aligned to form an array of coupled slots. The simulated filter pass-band is centered at 1.77 GHz with 0.5% bandwidth and with an exception of small frequency shift (20MHz) shows rather good agreement with measured data. High-temperature superconducting (YBCO) film on 1mm thick LaAIO3 substrate is used to achieve low Insertion loss (-0.6dB at 77K). The filter design is based on the full-wave model of coupled slots, which enables a possibility of quick and accurate circuit simulations using the duality principle.


Original languageEnglish
Pages (from-to)1081-1084
Number of pages4
JournalIEEE - MTTS International Microwave Symposium. Digest
Publication statusPublished - 18 Aug 2003