Title :
A 1.5V 0.7-2.5GHz CMOS Quadrature Demodulator for Multi-Band Direct-Conversion Receivers
Author :
Poobuapheun, Nuntachai ; Chen, Wei-Hung ; Boos, Zdravko ; Niknejad, Ali M.
Author_Institution :
Berkeley Wireless Res. Center, California Univ., Berkeley, CA
Abstract :
This paper presents an integrated quadrature demodulator with on-chip frequency divider implemented in a 0.13 mum CMOS technology. The mixer consists of a transconductance stage, a passive current switching stage, and an operational amplifier output stage. A complementary input architecture has been used to increase the transconductance for a given bias current. From 700MHz to 2.5GHz, the demodulator achieves 10dB DSB NF with 9-33 kHz 1/f-noise corner and 35dB of low frequency voltage gain. The total chip draws 20mA-24mA from a single 1.5V supply
Keywords :
1/f noise; CMOS integrated circuits; frequency dividers; operational amplifiers; radio receivers; 0.13 micron; 0.7 to 2.5 GHz; 1.5 V; 1/f-noise; 10 dB; 20 to 24 mA; 35 dB; CMOS quadrature demodulator; integrated quadrature demodulator; mixer; multi band direct conversion receivers; on-chip frequency divider; operational amplifier output stage; passive current switching stage; transconductance stage; CMOS technology; Circuits; Demodulation; Frequency conversion; Inductors; Low voltage; Operational amplifiers; Radio frequency; Transceivers; Transconductance;
Conference_Titel :
Custom Integrated Circuits Conference, 2006. CICC '06. IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
1-4244-0075-9
Electronic_ISBN :
1-4244-0076-7
DOI :
10.1109/CICC.2006.320999
