Title :
A 5nV/√Hz-IRN, 78dB-gain-range, 78dB-DR multi-standard baseband chain for Bluetooth, UMTS and WLAN
Author :
Amico, S.D. ; Matteis, M. De ; Baschirotto, A. ; Ghittori, N. ; Vigna, A. ; Malcovati, P.
Author_Institution :
Univ. of Salento, Lecce
Abstract :
An analog baseband chain for a multistandard (Bluetooth, WCDMA/UMTS, and WLAN) reconfigurable receiver in a 0.25 mum CMOS uses 1.65 mm . The structure is composed by an open-loop programmable-gain amplifier (PGA1), an active-Gm-RC low-pass filter (LPF), and a closed loop programmable-gain amplifier (PGA2). The chain gain can be programmed in the range -10divide68dB, while the input-referred noise (IRN) is 5nV/radicHz. In terms of linearity, the device features an in-band output referred intermodulation intercept point (OIP3) of 21dBm in UMTS mode, and a 1dB compression point of 1.3 dBm in WLAN mode. A dynamic range (DR) larger than 78 dB is achieved for a 1% total harmonic distortion (THD). The current consumption is minimized and adjusted for the different operation conditions, down to 11 mA for the full chain.
Keywords :
3G mobile communication; Bluetooth; CMOS analogue integrated circuits; amplifiers; circuit noise; code division multiple access; harmonic distortion; low-pass filters; programmable circuits; radio receivers; wireless LAN; Bluetooth; CMOS process; THD; UMTS; WCDMA; WLAN; analog baseband chain; closed loop programmable-gain amplifier; current consumption; dynamic range; gain 78 dB; input-referred noise; low-pass filter; multistandard baseband chain; open-loop programmable-gain amplifier; output referred intermodulation intercept point; reconfigurable receiver; size 0.25 mum; total harmonic distortion; 3G mobile communication; Baseband; Bluetooth; Electronics packaging; Energy consumption; Filters; Linearity; Multiaccess communication; Transceivers; Wireless LAN;
Conference_Titel :
Solid State Circuits Conference, 2007. ESSCIRC 2007. 33rd European
Conference_Location :
Munich
Print_ISBN :
978-1-4244-1125-2
DOI :
10.1109/ESSCIRC.2007.4430337
