Patent ID: 9246552
Filing Date: 2016-01-26
CPC Classification: G05F,H02M,H04B

Claim Text:
1. A digital shunt regulator comprising: an antenna configured to receive a radio frequency (RF) signal and generate a differential output signal over a differential path; a peak detector configured to receive the differential output signal over the differential path; a first comparator coupled to a voltage output of the peak detector and configured to receive a first voltage; a second comparator coupled to the voltage output of the peak detector and configured to receive a second voltage; a digital state machine configured to receive an output of the first comparator and an output of the second comparator; and a plurality of shunt NMOS transistors configured to receive an output of the digital state machine, wherein, the digital state machine is configured to control the number of shunt NMOS transistors that are activated to maintain the voltage output of the peak detector between the first voltage and the second voltage.