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

fYear

2008

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/DCAS.2008.4695919

Filename

4695919