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-Feb-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
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