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High-Efficiency Low-Cost Power Amplifiers for Millimetre-Wave Massive MIMO Systems (HELOPA)

用于毫米波大规模 MIMO 系统 (HELOPA) 的高效低成本功率放大器

基本信息

批准号：
EP/P013031/1
负责人：
Mury Thian
金额：
$ 12.8万
依托单位：
Queen's University Belfast
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2017
资助国家：
英国
起止时间：
2017 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FP013031%2F1
关键词：
Efficiency Low Cost Power Amplifiers

项目摘要

The dramatic improvements in capacity (as much as 1000x the current level) and spectral efficiency that are needed for future wireless communication systems to accommodate the rapidly increasing number of wireless electronic gadgets and users who require access to ubiquitous high-speed wireless links can be achieved by adopting mm-wave (mmW) massive multiple-input multiple-output (MIMO) technologies. The realization of mmW massive MIMO requires a radical change in base station architecture wherein hundreds of power amplifiers are required to feed a large array of small antennas. The development of mmW massive MIMO transceivers has been hampered to date by the power amplifier's (PA) poor efficiency and high implementation cost. Nonlinear switch-mode power amplifiers (SMPAs) such as Class E and F offer high efficiency but require fast (power-hungry, expensive) transistors to allow the generation of higher order harmonics. Moreover, an abrupt drop during ON-to-OFF or OFF-to-ON transition in the idealised switch current or voltage waveform of existing SMPA topologies results in substantial power dissipation in the practical implementation, and hence reduces the PA efficiency. The proposed research ambitiously aims to produce a new type of highly-efficient, highly-linear power amplifier that offers true soft-switching characteristics to permit the use of low-cost, slow-switching transistors for effective deployment in mmW massive MIMO systems and thus open the way for very power-conservative high-performance systems.

通过采用毫米波(MmW)大规模多输入多输出(MIMO)技术，未来的无线通信系统需要大幅提高容量(高达当前水平的1000倍)和频谱效率，以适应快速增长的无线电子设备和需要接入无处不在的高速无线链路的用户。实现毫米波大规模MIMO需要从根本上改变基站结构，其中需要数百个功率放大器来馈送大阵列的小天线。功率放大器(PA)的低效率和高实现成本一直阻碍着MW大规模MIMO收发机的发展。E类和F类等非线性开关模式功率放大器(SMPA)效率高，但需要快速(耗电、昂贵)晶体管才能产生高次谐波。此外，现有SMPA拓扑的理想化开关电流或电压波形在导通到关断或关断到导通的转变过程中突然下降，在实际实现中会导致相当大的功耗，从而降低功率放大器的效率。这项拟议的研究雄心勃勃地旨在生产一种新型的高效、高度线性的功率放大器，它具有真正的软开关特性，允许使用低成本、慢开关的晶体管在毫米波大规模MIMO系统中进行有效部署，从而为非常节能的高性能系统开辟道路。