Title :
Design strategy for high order continuous-time ΔΣ modulator for multistandard receiver
Author :
Jouida, Nejmeddine ; Rebai, Chiheb ; Ghazel, Adel ; Dallet, Dominique
Author_Institution :
MEDIATRON Lab., Ecole Super. de Commun. (SUP´´COM), Tunis
Abstract :
This paper presents a systematic technique for designing high order stable continuous-time (CT) delta-sigma modulator (ΔΣM) for multistandard receiver. The proposed design methodology permits the synthesis of 78M employing continuous-time integrators and resonators from discrete-time topologies. 5th and 10th order respectively Low Pass (LP) and Band Pass (BP) ΔΣM examples are given to illustrate the presented approach. The modulators are designed for GSM/UMTS/WLAN receiver and achieve, respectively, a dynamic range (DR) more than 98/70/40 dB.
Keywords :
band-pass filters; continuous time systems; delta-sigma modulation; integrating circuits; low-pass filters; mobile communication; receivers; resonator filters; wireless LAN; GSM receiver; UMTS receiver; WLAN receiver; band-pass filters; continuous-time delta-sigma modulator; continuous-time integrators; low-pass filters; resonator filters; 3G mobile communication; Broadband antennas; Frequency conversion; GSM; Noise level; Quantization; Sampling methods; Software radio; Transceivers; Wireless LAN;
Conference_Titel :
Electronics, Circuits and Systems, 2005. ICECS 2005. 12th IEEE International Conference on
Conference_Location :
Gammarth
Print_ISBN :
978-9972-61-100-1
Electronic_ISBN :
978-9972-61-100-1
DOI :
10.1109/ICECS.2005.4633467
