Title :
An I/Q Channel Time-Interleaved Band-Pass Sigma-Delta Modulator for a Low-IF Receiver
Author :
Kwon, Minho ; Han, Gunhee
Author_Institution :
Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul
Abstract :
This paper proposes a multiplexing scheme to realize an I/Q channel time-interleaved (TI) band-pass sigma-delta modulator (BPSDM) that shares OTAs to minimize power consumption and silicon area for a low-IF wireless receiver. The test chip was fabricated for a 10.7-MHz IF system with a 0.35-mum CMOS process. The measured peak SNDR for a 200-kHz bandwidth is approximately 73 dB. The power consumption of the fabricated chip is 61 mW with a 3.3-V supply and the silicon area is 1.78 mm2.
Keywords :
CMOS integrated circuits; operational amplifiers; receivers; sigma-delta modulation; 0.35 micron; 10.7 MHz; 200 kHz; 3.3 V; 61 mW; CMOS process; OTA; band-pass sigma-delta modulator; operational amplifiers; time-interleaved modulator; wireless receiver; Adders; Analog-digital conversion; Band pass filters; Delta-sigma modulation; Energy consumption; RF signals; Receivers; Silicon; Strontium; Topology;
Conference_Titel :
Circuits and Systems, 2007. ISCAS 2007. IEEE International Symposium on
Conference_Location :
New Orleans, LA
Print_ISBN :
1-4244-0920-9
Electronic_ISBN :
1-4244-0921-7
DOI :
10.1109/ISCAS.2007.378129
