| Paper: | SPTM-P9.6 | ||
| Session: | Signal Restoration, Reconstruction and Enhancement | ||
| Time: | Thursday, May 18, 14:00 - 16:00 | ||
| Presentation: | Poster | ||
| Topic: | Signal Processing Theory and Methods: Signal Restoration, Reconstruction, and Enhancement | ||
| Title: | Design of Oversampling Delta-Sigma DA Converters via H-infinity Optimization | ||
| Authors: | Masaaki Nagahara, Toshihiro Wada, Yutaka Yamamoto, Kyoto University, Japan | ||
| Abstract: | In this paper, we propose a new method for designing oversampling delta-sigma DA converters via H-infinity optimization. The design consists of two steps. One is that for delta-sigma modulators. We give all stabilizing feedback filters for the modulator, and propose an H-infinity design to shape the frequency response of the noise transfer function (NTF). The other is a design for interpolation filters in oversampling DA converters. While conventional designs are executed in the discrete-time domain, we take account of the characteristic of the original analog signal by using sampled-data H-infinity optimization. A design example is presented to show that our design is superior to conventional ones. | ||
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