Impedance-matched, class F high-frequency amplifier

Details Impedance-matched, class F high-frequency amplifier Impedance-matched, class F high-frequency amplifier

1991-09-13

1992-09-08

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including class d amplifier

330277, 330306, H03F 3193

Patent

active

051461781

ABSTRACT:
An impedance matched class-F high frequency amplifier includes an input matching circuit receiving high frequency signals connected to the gate of the FET. The drain of the FET is connected to an output matching circuit which matches the fundamental frequency and the second harmonic frequency, and the output of the output matching circuit is connected to an even harmonic terminating circuit. The stray reactance componance at the output impedance of the FET is offset by the output matching circuit, and therefore the even harmonics terminating circuit can more accurately terminate the second harmonic frequencies.

REFERENCES:
patent: 4717884 (1988-01-01), Mitzlaff

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