Patent ID: 7012477
Filing Date: 2006-03-14
Classification: H04L

Abstract:
1. An apparatus for amplitude and phase modulation of a signal comprising: a reference pulse oscillator arranged to provide a signal in the form of a series of input pulses; an input for input modulating data including desired amplitude and phase modulation; a vector logic circuit responsive to the input modulating data; two digital delay lines each coupled to said reference oscillator and having multiple delay cells for selectively delaying respective pulses of said signal; two lookup tables each of which contains information for controlling the delay cells of a respective one of the delay lines so that the vector logic circuit controls an overall delay of the respective one of the digital delay lines using the information so as to generate therefrom a component vector which is dependent upon the input modulating data; two amplitude adjustment circuits each of which contains a switching bank and combiner that enables the summation of input signals from a respective one of the digital delay lines to produce amplitude variances in output vectors therefrom; and a summer that is coupled to the two amplitude adjustment circuits which combines the output vectors therefrom together.