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Dielectric resonator having a frequency tuning element extending into the resonator hole

  • US 5,550,519 A
  • Filed: 01/18/1995
  • Issued: 08/27/1996
  • Est. Priority Date: 01/18/1994
  • Status: Expired due to Fees
First Claim
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1. A dielectric resonator comprising:

  • a dielectric block having opposed surfaces and a hole extending between the opposed surfaces, one of which surfaces is coated with an electrically conductive material and the other of which is uncoated, the hole having an electrically coated bore forming a transmission line resonator capable of generating an electric field therein, the bore having a wider section adjacent the uncoated surface than adjacent the coated surface, andan electrically conductive frequency tuning element grounded at one end and having a structure such that an opposing end is bent into the wider section in the bore of the transmission line resonator so as to frequency tune the dielectric resonator by affecting the field present in the wider section and providing a capacitance between the transmission line resonator and ground.

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