Impedance-matched, class F high-frequency amplifier
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United States of America Patent
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Sep 8, 1992
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N/A
app pub date -
Sep 13, 1991
filing date -
Nov 16, 1990
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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.
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