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Radio frequency signal output module having radio-frequency power amplifier and isolator element

  • US 6,570,442 B2
  • Filed: 08/07/2001
  • Issued: 05/27/2003
  • Est. Priority Date: 08/08/2000
  • Status: Expired due to Fees
First Claim
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1. A radio frequency signal output module comprising:

  • a dielectric multilayer substrate;

    a radio-frequency power amplifier circuit;

    an isolator element;

    an impedance matching circuit which is inserted and connected between said radio-frequency power amplifier circuit and said isolator element; and

    a feedback loop for controlling a gain of said radio-frequency power amplifier circuit, wherein said radio-frequency power amplifier circuit, said isolator element, said impedance matching circuit, and said feedback loop are integrally mounted on said dielectric multilayer substrate, and said feedback loop is branched from said impedance matching circuit, and connected to said radio-frequency power amplifier circuit.

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