应用于无线传感器网络的功率放大器的设计  

Design of Power Amplifier for 2.4-GHz Wireless Sensor Network Applications

作　　者：贺文伟[1,2,3] 李智群[1,2] 张萌[1,2] 

机构地区：[1]东南大学射频与光电集成电路研究所,南京210096 [2]东南大学传感网技术研究中心,无锡2140000 [3]鲁东大学电子与电气工程学院,山东烟台264025

出　　处：《电子器件》2011年第4期406-410,共5页Chinese Journal of Electron Devices

基　　金：国家863计划项目(2007AA01Z2A7);江苏省科技成果转化基金项目(BA2010073)

摘　　要：给出一种基于TSMC 0.18μm RF CMOS工艺,应用于无线传感器网络的2.4GHz功率放大器的设计。该功率放大器工作频率范围为2.4GHz～2.4835GHz,采用全差分AB类共源共栅电路结构,使用功率控制技术以节省功耗,当输入信号功率-12.5dBm时,输出功率在-10.4dBm至5.69dBm范围内可调。电路输入端采用片内电容电感匹配,输出端采用负载牵引技术,使之输出最大功率。在Cadence Spectre仿真环境下的后仿真结果表明,在1.8V电源电压下,功率增益为19.38dB,输入反射系数约为-30dB,输出1dB压缩点为11.73dBm,1dB压缩点处的功率附加效率为33.75%,电路消耗功率约为12mW。This paper provides a power amplifier（PA） design for Wireless Sensor Network （ WSN ） in the frequency band of 2.4 GHz- 2. 4835 GHz, based on TSMC 0. 18-μm RF CMOS process. The structure of fully differential Class AB cascode was used in this circuit, and in order to save power dissipation, the power control technique was adopted. The on-chip inductors and capacitances are used to achieve input matching and the means of loadpull is used at the output of PA for the maximum output power. The simulation result indicates that under 1.8 V power supply, the output power is in the range of-10.4 dBm to 5.69dBm when the input power is -12.5 dBm, the power gain is 19.38 dB,the input reflection coefficient is about -30 dB,the output 1 dB compression point is 11.73 dBm and the power added efficiency is 33.75% at 1 dB compression point,the power consumption is about 12 roW.

关 键 词：无线传感器网络 功率放大器 射频集成电路 功率控制 

分 类 号：TN722.75[电子电信—电路与系统]