Patent ID: 9252713
Filing Date: 2016-02-02
CPC Classification: H03F

Claim Text:
1. An electronic device comprising: a first transistor having a control terminal configured to receive an input signal, a first terminal, and a second terminal; a plurality of stacked transistors, the plurality of stacked transistors arranged in series between the second terminal of the first transistor and an output node, each of the plurality of stacked transistors comprising a control terminal; an inductor having a first terminal coupled to the output node and a second terminal coupled to a modulated power supply, the modulated power supply producing a time varying power supply voltage; a bias circuit having an input coupled to the modulated power supply to receive the time varying power supply voltage, the bias circuit comprising a plurality of outputs producing a plurality of bias voltages, wherein particular outputs of the bias circuit are coupled to particular control terminals of the plurality of stacked transistors, wherein the power supply voltage is greater than each of the plurality of bias voltages above a first power supply voltage level, and wherein the power supply voltage and the plurality of bias voltages decrease continuously until the power supply voltage is less than each of the plurality of bias voltages below a second power supply voltage level.