Title :
Noise analysis of the CG-CS low noise transconductance amplifier
Author :
Xu, Jiangtao ; Saavedra, Carlos E. ; Chen, Guican
Author_Institution :
Sch. of Electron. & Inf., Xi´´an Jiaotong Univ., Xi´´an, China
Abstract :
In this paper, noise analysis for a low noise transconductance amplifier (LNTA) is performed. LNTA becomes popular and necessary as the high linearity requirement and low supply voltage trend make the RF front-end design go into current domain. Common-gate common-source (CG-CS) topology is examined for noise analysis. Via theoretical analysis and specific equations derived, this paper not only studies how to arrange the topology and how to choose the design parameters, but also discusses the tradeoffs existing in LNTA design between noise figure, input matching and linearity.
Keywords :
low noise amplifiers; CG-CS topology; LNTA design; RF front-end design; common-gate common-source topology; linearity requirement; low-noise transconductance amplifier; low-supply voltage; noise analysis; noise figure; theoretical analysis; Impedance; Impedance matching; Linearity; Noise; Transconductance; Transistors; Wideband;
Conference_Titel :
Electron Devices and Solid-State Circuits (EDSSC), 2011 International Conference of
Conference_Location :
Tianjin
Print_ISBN :
978-1-4577-1998-1
Electronic_ISBN :
Pending
DOI :
10.1109/EDSSC.2011.6117630
