High-speed current switching
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United States of America Patent
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Jul 9, 2013
Grant Date -
Dec 8, 2011
app pub date -
Aug 2, 2010
filing date -
Jun 4, 2010
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Abstract
A method and circuit for high-speed current switching includes altering the operating voltage of the Current Source using a resistor in non-transmission mode, turning parasitic capacitive coupling into an advantage for faster settling of CS gate bias voltage. The resistor is designed to compensate for the voltage coupling when the Current Source is switched to Transmit mode. This greatly improves the settling time of current and bias voltage of the Current Source transistor without adding any complex circuit and saves 100% of power consumed in non-transmit mode.
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