Patent ID: 7952396
Filing Date: 2011-05-31
Classification: G06F

Abstract:
1. An arbitrary waveform generator (AWG), comprising: a waveform memory for providing a digital waveform signal at a sample rate; an arbitrary factor interpolator (AFI) coupled to receive said digital waveform signal or a processed digital waveform signal to provide an interpolated digital signal; a complex mixer for carrier modulation coupled to said AFI, said complex mixer receiving said interpolated digital signal and outputting a complex band pass signal; a digital to analog converter (DAC) coupled to an output of said complex mixer for receiving said complex band pass signal to provide an analog output signal; a fixed frequency sample clock for clocking said DAC to provide a fixed DAC sample rate, wherein said DAC provides a data clock signal, and a sample request controller for receiving said data clock signal and generating a sample request signal, said sample request signal coupled to said waveform memory, wherein said sample request signal controls times for requesting said digital waveform signal from said waveform memory; wherein said interpolated digital signal provided by said AFI is sampled at said fixed DAC sample rate independent of said sample rate of said digital waveform signal.