Title :
Design techniques for very high speed digital delta-sigma modulators aimed at all-digital RE transmitters
Author :
Frappe, Antoine ; Flament, A. ; Kaiser, Alexander ; Stefanelli, B. ; Cathelin, A.
Author_Institution :
IEMN/ISEN, Lille
Abstract :
This paper presents a very high-speed delta-sigma modulator for achieving digital generation of radio-frequency signals. About 68 dB of ACLR (adjacent channel leakage ratio) is obtained on the 7.8 GS/s output of the delta-sigma modulator for WCDMA standard. This is achieved by using original concepts like borrow-save arithmetic, non-exact quantization and differential dynamic logic.
Keywords :
code division multiple access; delta-sigma modulation; radio transmitters; very high speed integrated circuits; WCDMA standard; adjacent channel leakage ratio; all-digital RF transmitters; borrow-save arithmetic; differential dynamic logic; nonexact quantization; radio-frequency signals; very high speed digital delta-sigma modulators; Arithmetic; Delta modulation; Delta-sigma modulation; Digital modulation; Logic; Multiaccess communication; Quantization; Radio frequency; Radio transmitters; Signal generators;
Conference_Titel :
Electronics, Circuits and Systems, 2006. ICECS '06. 13th IEEE International Conference on
Conference_Location :
Nice
Print_ISBN :
1-4244-0395-2
Electronic_ISBN :
1-4244-0395-2
DOI :
10.1109/ICECS.2006.379634
