Title :
High order 1-bit sigma-delta ADC for multistandard GSM/UMTS radio receiver
Author :
Rebai, Chiheb ; Ghazel, Adel ; Farhat, Fethi
Author_Institution :
Mediatron Lab., Ecole Superieure de Commun., Tunis, Tunisia
Abstract :
This paper deals with specification and design methodology of analog to digital converter (ADC) stage for high dynamic range wide band multistandard radio receiver. To respect high resolution requirements a sigma-delta (ΣΔ) modulator based ADC is proposed. A high dynamic range low complexity 1-bit sigma-delta modulator is designed to guarantee high linearity for GSM/UMTS signals. Hence, a novel stable 3rd order 1-bit low-pass ΣΔ modulator is defined. Simulation results show more than 90 dB dynamic ranges for GSM and 60 dB for UMTS.
Keywords :
3G mobile communication; broadband networks; cellular radio; circuit complexity; circuit simulation; modulators; radio receivers; sigma-delta modulation; GSM-UMTS signals; analog-digital converter; circuit complexity; circuit simulation; high dynamic range radio receiver; high order sigma-delta ADC modulator; low pass sigma-delta modulator; multistandard GSM-UMTS radio receiver; wideband multistandard radio receiver; 3G mobile communication; Analog-digital conversion; Delta-sigma modulation; Design methodology; Dynamic range; GSM; Receivers; Signal design; Signal resolution; Wideband;
Conference_Titel :
Microelectronics, 2004. ICM 2004 Proceedings. The 16th International Conference on
Print_ISBN :
0-7803-8656-6
DOI :
10.1109/ICM.2004.1434225
