Patent ID: 7301490
Filing Date: 2007-11-27
Classification: H03F,H03M

Abstract:
1. A sigma-delta modulated power supply including: a local oscillator operable to provide a pseudo-random oscillating signal; a summation and integration stage operable to receive an input signal and a feedback signal and to sum and integrate the received signals to provide an integrated signal; a quantization stage coupled with the summation and integration stage to receive the integrated signal, the quantization stage operable to quantize the integrated signal to provide a quantized signal; a frequency randomized sampling stage coupled with both the quantization stage and the local oscillator to receive the quantized signal and the pseudo-random oscillating signal, the sampling stage operable to provide a sampled signal by utilizing the quantized signal and the oscillating signal; and an output stage coupled with the sampling stage and operable to amplify the sampled signal to provide an output signal and the feedback signal.