A 2-pole digitally tunable filter using local one bit varactors

  title={A 2-pole digitally tunable filter using local one bit varactors},
  author={M. Houssini and Arnaud Pothier and Aurelian Crunteanu and Pierre Blondy},
  journal={2008 IEEE MTT-S International Microwave Symposium Digest},
This paper presents the design of tunable filters based on capacitive RF MEMS switched loads appropriately distributed along an hairpin resonator. The capacitive load distribution is computed using hybrid circuit EM simulation and allows precise computation of the frequency shift for every location of the switched load. To prove the concept, a two pole filter has been fabricated on a 525 μm-thick quartz substrate and it occupies a total area of 1×0.85 cm2. Its center frequency can be discretely… CONTINUE READING
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