Patent ID: 6937176
Filing Date: 2005-08-30
Classification: G01S,H03M

Abstract:
1. A first-order multi-bit delta-sigma converter with large dynamic range and noise-shaping ability, comprising: a multi-bit A/D converter for converting a received analog signal; a digital adder electrically connected to the multi-bit A/D converter for receiving the analog signal and generating a converted digital output; a digital-to-analog converter electrically connected to the digital adder to convert a portion of the converted digital output to an analog signal; an analog delay element for delaying the received analog signal; differencing means for receiving the analog signal and the delayed analog signal, and subtracting the analog signal from the delayed analog signal and generating a differenced analog signal; and a fast one-bit loop comprising the differencing means, an integrator and a fast one-bit converter, wherein the differenced analog signal is integrated in the integrator and provided to fast one-bit converter, the output of which is fed back to the digital adder to generate the converted digital output.