Patent ID: 6201452
Filing Date: 2001-03-13
Classification: H03F,H04L

Abstract:
A method of generating a modulated radio power signal at a radio carrier frequency, the method comprising the steps of:sampling an information signal at a predetermined sampling rate to produce a series of samples of the information signal; generating a stream of complex numbers representing the series of samples of the information signal;representing a real part of each of the complex numbers as a plurality of first digits of decreasing numerical significance;representing an imaginary part of each of the complex numbers as a plurality of second digits of decreasing numerical significance;grouping a respective one of the first digits and a respective one of the second digits of like numerical significance to form a plurality of phase control symbols;using a respective phase control symbol to control the phase of an output signal at the radio carrier frequency from a respective one of a plurality of power amplifiers, each of the power amplifiers providing an output power level at an amplifier output that is related to the numerical significance of the first and second digits that form the associated phase control symbol; andcombining the amplifier outputs of the plurality of power amplifiers to form the modulated radio power signal.