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Duplexer having transmit and receive sections mounted on a single substrate

  • US 5,604,470 A
  • Filed: 04/13/1995
  • Issued: 02/18/1997
  • Est. Priority Date: 04/26/1994
  • Status: Expired due to Term
First Claim
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1. A duplexer comprising:

  • a transmission section consisting of an isolator and a transmission circuit devoid of any resonators and comprising inductors and capacitors;

    a reception section comprising a reception filter having a dielectric resonator apparatus; and

    a single substrate on which said transmission and reception sections are mounted, said transmission circuit functioning to match said isolator with said reception filter.

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