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Antenna duplexer

  • US 6,008,707 A
  • Filed: 09/26/1996
  • Issued: 12/28/1999
  • Est. Priority Date: 11/18/1993
  • Status: Expired due to Term
First Claim
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1. An antenna duplexer, comprising:

  • a dielectric block having a pair of opposing end surfaces and an outer peripheral surface which extends between said opposing end surfaces;

    a plurality of resonator holes extending from one of said end surfaces to the other of said end surfaces of said dielectric block, each hole having a respective inner surface;

    an outer conductor disposed on said outer peripheral surface of said dielectric block;

    each resonator hole having a respective inner conductor disposed in the corresponding resonator hole; and

    a common electrode and a pair of input/output electrodes disposed on said outer peripheral surface of said dielectric block, and not on said opposing end surfaces of said dielectric block, said outer peripheral surface of said dielectric block being substantially completely covered by said outer conductor except for non-conductive portions surrounding said common electrode and each of said input/output electrodes;

    said plurality of resonator holes defining first and second groups of resonator holes in said dielectric block, said first group of resonator holes serving as a transmitting filter and said second group of resonator holes serving as a receiving filter, said resonator holes in said first group being separate and distinct from said resonator holes in said second group;

    a respective one of said input/output electrodes being coupled to one of said resonator holes in a corresponding one of said first and second groups, and said common electrode being coupled to another one of said resonator holes in each of said first and second groups, for permitting said common electrode to conduct signals to and from both said transmitting filter and said receiving filter;

    a through hole extending between said opposing end surfaces, said through hole being located in said dielectric block substantially between said first and second groups of resonator holes;

    said outer conductor being disposed on both of said opposing end surfaces of said dielectric block; and

    said through hole having an inner conductor extending continuously through said through hole and being conductively connected to said outer conductor at both of said opposing end surfaces.

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