首页|期刊导航|半导体学报（英文版）|Design of low power common-gate low noise amplifier for 2.4 GHz wireless sensor network applications
半导体学报（英文版）2012，Vol.33Issue(10)：85-91,7.DOI:10.1088/1674-4926/33/10/105005
Design of low power common-gate low noise amplifier for 2.4 GHz wireless sensor network applications
Design of low power common-gate low noise amplifier for 2.4 GHz wireless sensor network applications
摘要
Abstract
This paper presents a differential low power low noise amplifier designed for the wireless sensor network (WSN) in a TSMC 0.18 μm RF CMOS process.A two-stage cross-coupling cascaded common-gate (CG)topology has been designed as the amplifier.The first stage is a capacitive cross-coupling topology.It can reduce the power and noise simultaneously.The second stage is a positive feedback cross-coupling topology,used to set up a negative resistance to enhance the equivalent Q factor of the inductor at the load to improve the gain of the LNA.A differential inductor has been designed as the load to achieve reasonable gain.This inductor has been simulated by the means of momentum electromagnetic simulation in ADS.A “double-π” circuit model has been built as the inductor model by iteration in ADS.The inductor has been fabricated separately to verify the model.The LNA has been fabricated and measured.The LNA works well centered at 2.44 GHz.The measured gain S21 is variable with high gain at 16.8 dB and low gain at 1 dB.The NF (noise figure) at high gain mode is 3.6 dB,the input referenced 1 dB compression point (IP1dB) is about-8 dBm and the IIP3 is 2 dBm at low gain mode.The LNA consumes about 1.2 mA current from 1.8 V power supply.关键词
low noise amplifier/ wireless sensor network/ low power/ inductor modeling/ cross-coupling/ positive feedbackKey words
low noise amplifier/ wireless sensor network/ low power/ inductor modeling/ cross-coupling/ positive feedback引用本文复制引用
Zhang Meng,Li Zhiqun..Design of low power common-gate low noise amplifier for 2.4 GHz wireless sensor network applications[J].半导体学报（英文版）,2012,33(10):85-91,7.基金项目
Project supported by the National High Technology Research and Development Program of China (No.2007AA01Z2A7) and the Special Fund of Jiangsu Province for the Transformation of Scientific and Technological Achievements (No.BA2010073). （No.2007AA01Z2A7）
