Design of a CMOS Distributed Power Amplifier with Gradual Changed Gain Cells  

作　　者：ZHANG Ying LI Zeyou YANG Hua GENG Xiao ZHANG Yi 

机构地区：[1]College of Electronic and Optical Engineering, College of Microelectronics, Nanjing University of Posts and Telecommunications [2]National and Local Joint Engineering Laboratory of RF Integration and Micro-Assembly Technology, Nanjing University of Posts and Telecommunications

出　　处：《Chinese Journal of Electronics》2018年第6期1158-1162,共5页电子学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.61106021);the Natural Science Foundation of the Jiangsu Higher Education Institutions of China(No.15KJB510020);the Research Fund of Nanjing University of Posts and Telecommunications(No.NY218051)

摘　　要：A non-uniform Distributed power amplifier （DPA） is designed and implemented in a 0.18μm CMOS technology. The gradual changed gain cells work with the tapered on-chip inductors to construct non-uniform artificial transmission lines, which improves the output power and efficiency in a wide frequency band while maintaining good input and output impedance matching. The proposed DPA achieves 9dB average associated gain from 1 to 17.2GHz, and the input return loss is less than -9dB while the output return loss is less than -8.SdB in the desired frequency band. The output power at ldB Output compression point （OPldB） is more than 7.8dBm in the frequency band of 2-16GHz, and the peak power-added efficiency is 6.2% with the O-P1dB 12.6dBm at 4GHz.A non-uniform Distributed power amplifier(DPA) is designed and implemented in a 0.18μm CMOS technology. The gradual changed gain cells work with the tapered on-chip inductors to construct non-uniform artificial transmission lines, which improves the output power and efficiency in a wide frequency band while maintaining good input and output impedance matching. The proposed DPA achieves 9 dB average associated gain from 1 to 17.2 GHz, and the input return loss is less than--9 dB while the output return loss is less than-8.5 dB in the desired frequency band. The output power at 1 dB Output compression point(OP1 dB) is more than 7.8 dBm in the frequency band of 2-16 GHz, and the peak power-added efficiency is 6.2% with the OP1 dB12.6 dBm at 4 GHz.

关 键 词：Distributed amplifier Impedance matching Power added efficiency Artificial transmission line 

分 类 号：TN722[电子电信—电路与系统] TP212[自动化与计算机技术—检测技术与自动化装置]