Title :
A 22 mA 3.7 dB NF direct conversion receiver for 3G WCDMA
Author :
Jussila, J. ; Ryynanen, J. ; Kivakas, K. ; Sumanen, L. ; Parssinen, A. ; Haionen, K.
Author_Institution :
Helsinki Univ. of Technol., Espoo, Finland
Abstract :
Wireless Internet is currently available in extended narrowband cellular systems. However, the wider channel bandwidths in third-generation systems will further improve multimedia services and capacity. The direct conversion receiver is a distinct alternative for wide-band direct sequence CDMA systems in high-speed cellular communications. However, the wide bandwidth in the 3.84 MHz transmission leads easily to large power consumption in the receiver, particularly when trading off with the dynamic range limitations of the direct conversion architecture. This design achieves 3.7 dB NF and -16 dBm IIP3 with only 22 mA. The single-chip receiver includes a low-noise amplifier (LNA), downconversion mixers, analog channel selection filters, variable-gain amplifiers (VGA), and 6 b A/D converters (ADC).
Keywords :
broadband networks; cellular radio; code division multiple access; radio receivers; 22 mA; 3.7 dB; 3.84 MHz; 3G WCDMA; direct conversion receiver; high-speed cellular communication; third-generation system; wide-band direct sequence CDMA system; Bandwidth; Dynamic range; Energy consumption; Internet; Low-noise amplifiers; Multiaccess communication; Multimedia systems; Narrowband; Noise measurement; Wideband;
Conference_Titel :
Solid-State Circuits Conference, 2001. Digest of Technical Papers. ISSCC. 2001 IEEE International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-6608-5
DOI :
10.1109/ISSCC.2001.912639
