Thin bandpass filters containing sections of symmetric strip transmission line

  • A. V. Zakharov
  • M. E. Il’chenko
Physical Processes in Electron Devices


Thin (1-mm thick or thinner) combline bandpass filters based on sections of symmetric strip transmission lines and containing closely spaced (0.1–0.2 mm apart) stepped-impedance resonators are described. It has been found that, if these filters are made on high-permittivity ceramic substrates, their dimensions prove to be smaller than the dimensions of other ceramic-based filters. Various frequency characteristics of these filters—symmetric, with increased one-sided selectivity, and with a constant delay time—have been analyzed. The experimental results obtained for a 1-mm-thick bandpass filter with ɛ r = 9.7 are in good agreement with the computer-simulation data.


Insertion Loss Return Loss Constant Delay Time Ceramic Filter Voltage Standing Wave Ratio 
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Copyright information

© Pleiades Publishing, Ltd. 2013

Authors and Affiliations

  • A. V. Zakharov
    • 1
  • M. E. Il’chenko
    • 1
  1. 1.Kyiv Polytechnic InstituteNational Technical University of UkraineKyivUkraine

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