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Compact tri-band bandpass filter based on quarter-wavelength resonators

Author

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  • Nikolina Jankovic
  • Vasa Radonic
  • Vesna Crnojevic-Bengin

Abstract

In this work, a planar microstrip tri-band filter based on quarter-wavelength resonators is presented, which allows independent control of the positions of all three passbands. Furthermore, the topology of the filter provides five transmission zeros and thus results in a highly selective response in all passbands. A synthesis procedure of the filter is presented and used to design a tri-band filter which operates at WLAN frequencies of 2.4/3.5/5.2 GHz. The designed filter outperforms all other state-of-the-art tri-band filters in terms of compact size, high selectivity and transmission, and return-loss characteristics.

Suggested Citation

  • Nikolina Jankovic & Vasa Radonic & Vesna Crnojevic-Bengin, 2013. "Compact tri-band bandpass filter based on quarter-wavelength resonators," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 27(6), pages 750-757, April.
    • Handle: RePEc:taf:tewaxx:v:27:y:2013:i:6:p:750-757
    DOI: 10.1080/09205071.2013.786206
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