Biasing circuitry
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United States of America Patent
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Jun 27, 2017
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app pub date -
Sep 22, 2015
filing date -
Jun 17, 2015
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Abstract
A biasing circuitry is disclosed. The biasing circuitry includes a biasing module, electrically connected to a power amplifier; and a control series, having an end electrically connected to a positive voltage, and another end electrically connected to the biasing module. The control series includes a switch unit, controlled by a control voltage to be on or off; and a voltage-drop unit, connected to the switch unit in series. The voltage-drop unit is configured to adjust a bias point of the power amplifier.
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