Title :
A low-power switched-current CDMA matched filter employing MOS-linear matching cell and output A/D converter
Author :
Nakayama, Tomoyuki ; Yamasaki, Toshihiko ; Tadashi, S.
Author_Institution :
Dept. of Frontier Informatics, Univ. of Tokyo, Japan
Abstract :
A low-power switched-current CDMA matched filter has been developed. The front-end V/I converter has been eliminated by merging the function into each matching cell utilizing the MOS linear I-V characteristics. A low-power A/D converter has also been developed to establish a smooth interfacing to digital back-end processing. The prototype chip was fabricated in a 0.35-μm CMOS technology, and a low power operation of 1.65 mW, including the A/D converter, at 11 Mchip/s with 2 V power supply has been demonstrated.
Keywords :
CMOS integrated circuits; analogue-digital conversion; code division multiple access; current-mode circuits; low-power electronics; matched filters; mobile radio; switched current circuits; 0.35 micron; 1.65 mW; 2 V; CMOS; MOS linear I-V characteristics; MOS-linear matching cell; current-mode matched filter; digital back-end processing interface; low-power dynamic flash A/D converter; low-power matched filter; mobile communication systems; output A/D converter; switched-current CDMA matched filter; CMOS technology; Circuits; Impedance matching; Informatics; Matched filters; Merging; Multiaccess communication; Power dissipation; Switching converters; Threshold voltage;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1465848
