Multilayer Planar Tunable Filter With Very Wide Tuning Bandwidth

@article{Sun2011MultilayerPT,
  title={Multilayer Planar Tunable Filter With Very Wide Tuning Bandwidth},
  author={Jiang Sheng Sun and Noriaki Kaneda and Yves Baeyens and Tatsuo Itoh and Young-Kai Chen},
  journal={IEEE Transactions on Microwave Theory and Techniques},
  year={2011},
  volume={59},
  pages={2864-2871}
}
In this paper, we propose and develop a partially shielded tunable filter structure using a varactor-loaded split-ring resonator. The novel physical topology of the filter is suitable for vertical stacking of filters and enables a compact multilayer tunable filter for applications requiring a very wide tuning range. The capacitance range and ratio needed to achieve the designated tuning range are presented, and analytical solutions are given for the second and third higher order modes for… CONTINUE READING

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