Power amplifier
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United States of America
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Jan 11, 2022
Grant Date -
Dec 31, 2020
app pub date -
Sep 10, 2020
filing date -
Sep 10, 2020
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A power amplifier includes a distributor distributing an input first signal to a second signal and a third signal delayed by about 2ϕ degrees (45<ϕ<90) from the second signal, a first amplifier amplifying the second signal and outputting a fourth signal when a first-signal power level is not lower than a first level, a second amplifier amplifying the third signal and outputting a fifth signal when the first-signal power level is not lower than a second level that is greater than the first level, a first phase shifter receiving the fourth signal and outputting a sixth signal delayed by about ϕ degrees from the fourth signal, a second phase shifter receiving the fifth signal and outputting a seventh signal advanced by about ϕ degrees from the fifth signal, and a combiner combining the sixth and seventh signals and outputting an amplified signal of the first signal.
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