EER power amplifier modulator efficiency improvement using PWM with additional sigma-delta modulation
EER power amplifier modulator efficiency improvement using PWM with additional sigma-delta modulation
复制标题
使用 PWM 和附加 Σ-Δ 调制提高 EER 功率放大器调制器效率
DOI：
10.1109/synchroinfo.2018.8456955
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
O. Varlamov
中科院分区：
文献类型：
--
作者：
A. O. Bolotov;R. G. Kholyukov;O. Varlamov
本文讨论了提高EER发射机效率的问题。以图形的形式给出了采用普通MOSFET和先进GaN工艺制作的EER功率放大器的计算机模拟结果：输出电压效率与输出电压非线性失真的关系。一个数字四相PWM信号发生器与额外的Delta-Sigma调制的框图，以及它的仿真结果，其中包括在不同频率的动态范围的测量和互调失真的评估。
The article deals with the problem of increasing the efficiency of EER transmitters. The results of computer simulation of the EER power amplifier using transistors made by common MOSFET and advanced GaN technology in the form of graphs: the dependence of the efficiency of the output voltage and the dependence of the nonlinear distortion of the output voltage are presented. A block diagram of a digital four-phase PWM signal generator with additional Delta-Sigma modulation is presented and described, as well as the results of its simulation, which include the measurement of the dynamic range at different frequencies and the evaluation of intermodulation distortions.