Patent ID: 9319495
Filing Date: 2016-04-19
CPC Classification: H03F,H04M

Claim Text:
1. An Integrated Circuit (IC) comprising: a DC-DC converter coupled to receive power from a power source and to generate a regulated power supply voltage as output, wherein a magnitude of said regulated power supply voltage is controlled by the magnitude of a control signal provided to said DC-DC converter; a first linear amplifier coupled to receive a first input signal, said first input signal varying in amplitude continuously in each of a sequence of time intervals, said first linear amplifier designed to amplify said first input signal to generate a power-amplified output signal, said power-amplified output signal also varying in amplitude continuously in each of said sequence of time intervals, wherein said first linear amplifier is coupled to receive said regulated power supply voltage for operation; and a control block coupled to receive said first input signal, and to generate said control signal with a magnitude having positive correlation with instantaneous amplitude of said first input signal, wherein the operation of said control block in conjunction with said DC-DC converter causes said regulated power supply voltage to continuously track instantaneous values of amplitude of said power-amplified output signal in each of said sequence of time intervals such that a difference of instantaneous amplitude of said regulated power supply and said power-amplified output signal is sought to be maintained constant throughout all of said sequence of time intervals, wherein said regulated power supply voltage continuously tracks said amplitude of said power-amplified output signal when the amplitude of said power-amplified output signal is in a first range less than a magnitude of said power source, as well as when the amplitude of said power-amplified output signal is in a second range greater than or equal to said magnitude of said power source.