Abstract:
Aspects of the present disclosure provide signal amplification. An example method generally includes amplifying a version of a first input signal with a power amplifier in a first state where a bias voltage of the power amplifier is set to a first voltage based on a first tracking mode; obtaining a first output signal of the power amplifier in a second state where the bias voltage is set to a second voltage less than the first voltage; determining a predistortion associated with the power amplifier based at least in part on the obtained first output signal; applying the predistortion to the first input signal; and amplifying a version of the predistorted first input signal with the power amplifier in a third state where the bias voltage is set to a third voltage based on a second tracking mode, wherein the third voltage is less than the first voltage.
Abstract:
A device includes a silicon-on-insulator (SOI) substrate comprising a bulk silicon (Si) substrate, a buried oxide layer over the bulk Si substrate and a silicon device layer over the buried oxide layer, a first substrate tap and a second substrate tap located in the buried oxide layer and the silicon device layer, the first and second substrate taps in contact with the bulk Si substrate, and an initial depletion region located in the bulk Si substrate below the buried oxide layer and associated with at least one of the first substrate tap and the second substrate tap, the first substrate tap and the second substrate tap configured to increase the initial depletion region based on an applied bias voltage.