Architectures for HighOrder Multibit ¿¿ ModulatorsThis work was supported by the Naval Ocean Systems Center, San Diego, CA, contract no. N6600186C0193

???? modulators with higher-order noise shaping and multibit internal quantizers are described. A new realization method for single-stage high-order modulators is discussed. Also, a new multistage architecture with multibit quantizers and interstage scaling is described. A digital correction method for the effects of nonideal analog components of the multistage modulator is presented. Simulation results are included to verify the theoretical considerations.