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A low-voltage, low-distortion (1.2V, 29.5dBm OIP3) reconfigurable baseband block for mobile applications

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5 Author(s)
Ghittori, N. ; Dept. of Electron., Pavia Univ., Italy ; Vigna, A. ; Malcovati, P. ; D' Amico, S.
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This paper presents a reconfigurable baseband DAC system (current-steering D/A + transimpedance stage + low-pass reconstruction filter) operating in a low-voltage multistandard transmitter, while satisfying high linearity requirements. The implemented block can process the WLAN 802.11 a/b/g and the UMTS signals. The device has been integrated in a 0.13 μm CMOS technology and operates with a 1.2 V supply voltage. Experimental results show that the proposed circuit achieves a 29.5dBm OIP3 when configured for the WLAN setting, and a 31 dBm OIP3 when configured for the UMTS setting. The current consumption, optimized for the two cases, is 16.2 mA/14 mA for WLAN/UMTS, respectively.

Published in:

Research in Microelectronics and Electronics, 2005 PhD  (Volume:1 )

Date of Conference:

25-28 July 2005