Patent ID: 7557619

Claim:
A frequency synthesizer, comprising: an accumulator coupled to receive a phase increment value and configured to provide a phase profile signal; an adder coupled to receive the phase profile signal and a predicted error from a predictive filter, the adder configured to subtract the predicted error from the phase profile signal; busing coupled to the adder to separate a quantized version of the phase profile signal from an error portion thereof; the predictive filter coupled to receive the error portion for generation of a next predicted error; the predictive filter being for a fraction of a sample frequency bandwidth; a storage device having digital representations of sinusoidal signals coupled to receive the quantized version of the phase profile signal; a digital-to-analog converter coupled to receive a digital representation of a sinusoidal signal obtained from the storage device responsive to the quantized version of the phase profile signal; the digital-to-analog converter configured to provide an analog sinusoidal signal responsive to the digital representation of sinusoidal signal obtained from the storage device; and an anti-imaging filter coupled to receive the analog sinusoidal signal and configured to filter out noise.