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Harmonic matching network for a saturated amplifier

  • US 20020105384A1
  • Filed: 12/07/2000
  • Published: 08/08/2002
  • Est. Priority Date: 12/07/2000
  • Status: Active Grant
First Claim
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1. A transmitter power amplifier for converting power from a direct current (DC) supply to radio frequency power (RF) in a load resistance, comprising:

  • an amplifier comprising at least one active output device, the amplifier having an output capacitance; and

    a harmonic terminating and impedance matching network comprising a plurality of sections coupled between said amplifier and the load resistance, a first section nearest said amplifier creating an impedance at the at least one active output device which is resonant with said output capacitance at a highest harmonic frequency and compensates for said output capacitance to produce a high impedance at said highest harmonic frequency, and a second section nearest the load resistance creating an impedance at said at least one active output device which resonates with said output capacitance at a lowest harmonic frequency and compensates for said output capacitance to produce a high impedance at said lowest harmonic frequency.

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