BIAS CIRCUIT FOR INDEPENDENT CONTROL OF ON AND OFF SWITCHING TIME
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United States of America Patent
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Issued Date -
Jul 18, 2024
app pub date -
Jan 17, 2024
filing date -
Jan 18, 2023
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Abstract
An amplifier system for radio frequency hot switching of a power amplifier can include a field-effect transistor, a forward biasing network, and a reverse biasing network. The forward biasing network is configured to provide a positive bias voltage to a gate terminal of the field-effect transistor, and the reverse biasing network is configured to provide a negative bias voltage to the gate terminal, with resistance of both biasing networks selected to independently control an on and off-switching time of the field-effect transistor. The independent on and off-switching time can allow for rapid “hot switching” in a connected power amplifier while the power amplifier is energized, while reducing spurious emissions of radio frequency signals by the power amplifier.
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