標題: | Dual-band sigma-delta modulator for wideband receiver applications |
作者: | Chiang, JS Chou, PC Chang, TH 電控工程研究所 Institute of Electrical and Control Engineering |
關鍵字: | sigma-delta modulator;dual-band wideband A/D converter;low distortion;swing suppressing;GSM and W-CDMA |
公開日期: | 1-二月-2004 |
摘要: | This work presents a new sigma-delta modulator (SDM) architecture for a wide bandwidth receiver. This architecture contains dualbandwidth for W-CDMA and GSM system applications. Low-distortion swing-suppressing SDM and interpolative SDM cascaded units are used together. Using the low-distortion swing-suppressing technique, the resolution can be improved even under non-linearity effects. The interpolative SDM extends the signal bandwidth and represses the high-band noise. The SDM used in the W-CDMA and GSM applications was designed and simulated using 0.25-mum 1P5M CMOS technology. The simulated peak SNDR of W-CDMA and GSM are 72/70 dB and 82/84 dB in Low-IF/Zero-IF standards. |
URI: | http://hdl.handle.net/11536/27044 |
ISSN: | 0916-8508 |
期刊: | IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES |
Volume: | E87A |
Issue: | 2 |
起始頁: | 311 |
結束頁: | 323 |
顯示於類別: | 期刊論文 |