Journal of information and communication convergence engineering

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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A Compact Tunable Bandpass Filter Using Coupled Metamaterial Resonators with Varactor Diode

  • Kim, Gi-Rae (Department of Electronics Engineering, Silla University)
  • Received : 2010.07.09
  • Accepted : 2010.07.31
  • Published : 2010.10.30
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Abstract

In this paper, we present a novel tunable microstrip bandpass filter based on split ring resonators (SRRs). The varactors are reverse-biased semiconductor diode, and are connected between the concentric rings of the SRR. An individual varactor loaded SRR based bandpass tunable filter module is analyzed. Then a second order tunable filter with 7% fractional bandwidth and a tuning range from 2.75 to 2.86 GHz is assembled from basic filter modules. The simulator HFSS (V10) is used to design the tunable filter and to simulate. The results show good characteristics is created.

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References

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