Title :
A CMOS differential noise cancelling low noise transconductance amplifier
Author :
Chen, Xi ; Silva-Martinez, Jose ; Hoyos, Sebastian
Author_Institution :
Dept. of Electr. & Comput. Eng., Texas A&M Univ., College Station, TX
Abstract :
In this paper a two stage CMOS Radio Frequency (RF) low noise transconductance amplifier is proposed. The feed-forward noise-cancelling technique is exploited to improve the Noise Figure (NF). Simulations with 45 nm CMOS process have been performed to verify the proposed design. The LNA achieves a transconductance of 115 mS, -3 dB bandwidth of 4.5 GHz, NF of 3.4 dB and IIP3 of -10 dBm. Compared to the single stage transconductance amplifier, the in band NF improves by 3.3 dB. The power consumption is 40 mW.
Keywords :
CMOS integrated circuits; feedforward amplifiers; integrated circuit noise; low noise amplifiers; radiofrequency amplifiers; CMOS radio frequency low noise transconductance amplifier; LNA; feed-forward noise-cancelling; noise figure; power 40 mW; size 45 nm; CMOS process; Differential amplifiers; Feedforward systems; Low-noise amplifiers; Noise cancellation; Noise figure; Noise measurement; Radio frequency; Radiofrequency amplifiers; Transconductance;
Conference_Titel :
Circuits and Systems Workshop: System-on-Chip - Design, Applications, Integration, and Software, 2008 IEEE Dallas
Conference_Location :
Dallas, TX
Print_ISBN :
978-1-4244-2955-4
Electronic_ISBN :
978-1-4244-2956-1
DOI :
10.1109/DCAS.2008.4695919
