Class-F power amplifier circuit

Details Class-F power amplifier circuit Class-F power amplifier circuit

2008-04-02

2010-06-22

Mottola, Steven J (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including class d amplifier

C330S302000

Reexamination Certificate

active

07741907

ABSTRACT:
An FET outputs a signal including a component of angular frequency ωo of input signal and harmonic components, a first two-terminal reactance circuit interconnects an output terminal and a ground terminal of the FET, a fundamental matching circuit is connected to an output terminal end of the FET, a second two-terminal reactance circuit is connected between an input terminal of the matching circuit and the output terminal, the FET has a parallel circuit of an output resistor and an output capacitor, the first two-terminal reactance circuit is open for a dc, shorted for angular frequencies 2ωo, 4ωo, . . . , 2nωo, and parallel resonant with the output capacitor for angular frequencies 3ωo, 5ωo, . . . , (2n+1)ωo, and the second two-terminal reactance circuit is shorted for a dc, and open for angular frequencies 3ωo, 5ωo, . . . , (2n+1)ωo.

REFERENCES:
patent: 4717884 (1988-01-01), Mitzlaff
patent: 5146178 (1992-09-01), Nojima et al.
patent: 7161434 (2007-01-01), Rhodes
patent: 2007/0057731 (2007-03-01), Le
patent: 2001-111362 (2001-04-01), None
patent: 2005-117200 (2005-04-01), None
patent: WO 02/31966 (2002-04-01), None
patent: WO 2004/023646 (2004-03-01), None
patent: WO 2006/016299 (2006-02-01), None

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