An Automatic Coefficient Design Methodology for High-Order Bandpass Sigma-Delta Modulator With Single-Stage Structure

Hwi Ming Wang, Tai-Haur Kuo

研究成果: Article

9 引文 斯高帕斯(Scopus)


An automatic coefficient design method for synthesis of bandpass sigma-delta modulators (BPSDMs) is presented in this brief. Single-stage BPSDM structures, cascade-of-resonator with distributed feedback, cascade-of-resonator with distributed feed-forward, and a new structure with lower coefficient spread, are all used to fit the synthesized coefficients. The automatic coefficient design method is realized in an easy-to-use computer program. Even for inexperienced designers, reliable and high-tolerance BPSDM coefficients for various applications can be automatically and efficiently generated. The methodology covers many design concerns including BPSDM coefficient tolerance for circuit component mismatch, design tradeoffs among in-band noise suppression, over-sampling ratio, modulator order and quantizer bit number. Finally, design examples with orders of 6 and 8, and quantizer bit number of 1-bit and 3-bit, respectively, are used for the verification of the proposed automatic coefficient design method.

頁(從 - 到)580-584
期刊IEEE Transactions on Circuits and Systems II: Express Briefs
出版狀態Published - 2006 七月 6


All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering