Ultra broadband envelope tracking systems for 5G utilizing class-S supply voltage modulator

在该项目过程中，将开发下一代5G无线通信所需的毫米波频率范围的极高信号带宽的节能包络跟踪功率放大器系统。为此，电源电压调制器将由数字放大器模块实现。该系统设计的信号频率为28 GHz，输出功率为5 W，可解决未来5G网络中基站的问题，这些基站分布越来越多，小区越来越小。该项目的一个主要目标是克服以前包络跟踪概念的信号带宽限制。所提供的数字放大器作为电压调制器，带宽可达1ghz。包络跟踪系统将借助GaN-HEMT电路实现，并集成在一个芯片上。

In the course of this project an energy-efficient envelope tracking power amplifier system for extreme high signal bandwidths for the mm-wave frequency range as required for next-generation 5G wireless communications will be developed. For this purpose, the supply voltage modulator is to be implemented with digital amplifier modules. The proposed system is designed for a signal frequency of 28 GHz at an output power of 5 W and addresses base stations in future 5G networks with more and more distributed and smaller cells. A major goal of this project is to overcome the previous limitation of the signal bandwidth of the envelope tracking concept. With the provided digital amplifiers as a voltage modulator, bandwidths of up to 1 GHz are applied. The envelope tracking system is to be implemented with the help of GaN-HEMT circuits and integrated on one chip.