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Variable radio frequency band filter

  • US 20070247262A1
  • Filed: 04/13/2007
  • Published: 10/25/2007
  • Est. Priority Date: 08/23/2003
  • Status: Active Grant
First Claim
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1. A variable frequency band filter comprising:

  • a housing;

    a number of resonator rods extending upward from the internal bottom surface of the housing;

    tuning plates positioned on the internal top surface of the housing and facing the upper end surface of the respective resonator rods;

    a tuning support rotatably coupled on the housing and positioned on top of the tuning plates; and

    tuning bars coupled to the tuning support and adapted to cause the tuning plates to approach or move away from the resonator rods as the tuning support is rotated.

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