Microsemi Corporation

Mark Santini

Brian Eplett

Kyle Hershberger

Darcy Poulin

Devices and methods for correcting for start-up transients in integrated power amplifier are disclosed. A power amplifier is responsive to a bias control output and is arranged to provide an amplified power output. In some examples, the boost current is adjusted based on a supply voltage and an input power of the power amplifier. The power amplifier can operate in a low power and a high power mode and the adjustments can be made to the supply voltage and/or the input power vary depending on whether the power amplifier is operating in the high or low power mode. The adjustments for the high power mode operation are different than and correspond to the high power mode input power and voltage and the adjustments for the low power mode operation are different than and correspond to the low power mode input power and voltage.

Integrated start-up bias boost for dynamic error vector magnitude enhancement

Devices and methods for correcting for start-up transients in integrated power amplifiers are disclosed. A delay element is arranged to produce a delay waveform signal that is responsive to an input voltage signal. A transconductance element has an input that receives the delay waveform signal and is arranged to provide an output boost current that is based on the delay waveform signal and a gain of the transconductance element. A reference element provides an output bias current that is responsive to a static reference current and the boost current. A bias element has an input that receives the bias current and is arranged to provide a bias control output. A power amplifier is responsive to the bias control output and is arranged to provide an amplified power output. In some examples, the boost current is adjusted based on a supply voltage and an input power of the power amplifier.

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Atlanta, GA, United States of America

Mark Santini