조명전기설비학회논문지 (Journal of the Korean Institute of Illuminating and Electrical Installation Engineers)

  • 제20권9호
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  • Pages.40-44
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  • 2006
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  • 1229-4691(pISSN)
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  • 2287-5034(eISSN)
한국조명전기설비학회 (The Korean Institute of IIIuminating and Electrical Installation Engineers)
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Implementation of Tuneable Filter Using CPW Coupled Line and Varactor Diode

  • 발행 : 2006.11.30
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초록

This study investigated a new tuneable bandpass filter based on coplanar waveguide coupled line structure, and using the varactor diode for tuning the center frequency of the filter. The filter was designed by a commercial simulator and had a tuning range of 180[MHz] from 0.95[GHz] to 1.13[GHz]. The filter acceptable values regarding the insertion loss was less than 3[dB] and its return loss greater than 12[dB]. The figure of merit of the implemented tuneable filter increased with the reverse bias voltage up to 14[V] on the varactor diode. The proposed filter has a promising future as it can be used in integration processes and in various materials as substrate.

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참고문헌

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  5. Y. H Shu et. al, 'Electronically Switchable and Tuneable Coplanar Waveguide-Slotline Bandpass Filter', IEE Trans. MTT., Vol.23, No. 10, pp.795-802, Oct. 1975 https://doi.org/10.1109/TMTT.1975.1128685
  6. Datasheet '1SV287', Toshiba, May 1997