Patent ID: 6633750
Filing Date: 2003-10-14
Classification: H03F,H03G

Abstract:
A method of regulating the DC power consumption in a wireless communications mobile unit, the method comprising:providing DC power within said mobile unit; transmitting a command signal from a base station, said command signal indicating a desired power level of an RF signal output from said mobile unit; receiving said command signal at said mobile unit; and setting a level of said DC power based on said command signal; wherein said DC power produces a supply current in an RF amplifier circuit within said mobile unit, and wherein said DC power level is set by: generating a control signal within said mobile unit, wherein a level of said control signal is selected based on said command signal; generating a supply current tracking signal indicating the present level of said supply current; determining the difference between at least said control signal and at least said supply current tracking signal to obtain a biasing signal; and varying said supply current in proportion to said biasing signal.