High-frequency power amplifier
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United States of America Patent
Stats
-
Mar 5, 2024
Grant Date -
Nov 4, 2021
app pub date -
Jul 13, 2021
filing date -
Feb 22, 2019
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A high-frequency power amplifier is configured in such a way as to include an input matching circuit, an amplifying element, an output matching circuit, a coupling circuit, a detection circuit, and an output terminal, and in such a way that either the input matching circuit or the output matching circuit has an active element, the detection circuit receives a signal outputted by the coupling circuit and outputs a control voltage into which the detection circuit converts the signal to the active element, and the active element changes the impedance of the active element in accordance with the control voltage outputted by the detection circuit, thereby changing the power of a signal outputted by either the input matching circuit having the active element or the output matching circuit having the active element, to change the power of a signal which the coupling circuit outputs to the output terminal.
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