Efficiency Analysis of Concurrently Driven Power Amplifiers

被引：2
作者：
Qi, Tian [1 ]
He, Songbai [1 ]
Hu, Biao [1 ]
Liu, Chang [2 ]
Du, Xuekun [3 ]
Zhao, Yulong [3 ]
Helaoui, Mohamed [3 ]
Chen, Wenhua [4 ]
Ghannouchi, Fadhel M. [3 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Elect Sci & Engn, Chengdu 611731, Peoples R China
[2] Tianjin Univ, Sch Microelect, Tianjin Key Lab Imaging & Sensing Microelect Tech, Tianjin 300072, Peoples R China
[3] Univ Calgary, Dept Elect & Comp Engn, Calgary, AB T2N 1N4, Canada
[4] Tsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China
来源：
IEEE ACCESS | 2020年 / 8卷
基金：
中国国家自然科学基金; 加拿大自然科学与工程研究理事会;
关键词：
Radio frequency; Harmonic analysis; Transistors; Dual band; Fourier series; Radio transmitters; Licenses; Concurrent; dual-band; efficiency; elliptic Integral; Fourier Series; imbalance; power amplifiers; two-tone; DESIGN;
D O I：
10.1109/ACCESS.2020.2994318
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this work, the properties of a two-tone signal driven concurrent power amplifier (CPA) are analyzed extensively. Firstly, the characteristics of two-tone signals are discussed to explain the nonlinearity and efficiency of two-tone signal driven CPA. Secondly, a method of how to solve the efficiency of a two-tone signal driven CPA is proposed in this paper with a detailed calculation procedure and complete theory. Finally, a general empirical expression to calculate the drain efficiency (DE) of CPA versus the frequency ratio and the amplitude ratio of the two carriers is proposed. Simulation results and experimental verifications are given to validate the proposed analytical formulation to predict the efficiency of CPAs when driven with balanced or imbalanced two-tone signals.
引用
收藏
页码：91379 / 91393
页数：15
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