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Broadband Switch-Mode Radio Frequency Power Amplifiers using Tunable Components

使用可调谐元件的宽带开关模式射频功率放大器

基本信息

批准号：
288809626
负责人：
Professor Dr.-Ing. Georg Böck
金额：
--
依托单位：
Institut für Hochfrequenztechnik E-3
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2016
资助国家：
德国
起止时间：
2015-12-31 至 2017-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/288809626?language=en
关键词：
Broadband Switch Mode Radio Frequency

项目摘要

The most critical part of the mobile base stations, in terms of power, bandwidth, efficiency and cooling, is the PA. The advent of the new communication standards, such as WCDMA and LTE with high back-off power levels, has further aggravated these issues. The poor peak and back-off efficiencies of the PA can affect the size of the required cooling system and life expectancy of the transmitter. On the other hand, the poor bandwidth can result in multiple PA requirements for multi-application coverage. Therefore, highly efficient wideband linear PAs are essential to achieve small, reliable, and low cost transmitters. Until now, these requirements could not be achieved simultaneously by conventional methods, such as linear class-A, class-AB, class-J and harmonically tuned PAs.In the proposal, the re-configurability of the PA, using controllable matching networks is the focus point of the investigation. The aim of this extension is to improve the achieved results of the first phase of the project, in terms of bandwidth, output power and linearity. In this case, the design of high performance broadband switch-mode PAs at various backoff power levels, through output matching network and gate voltage optimizations, will be studied. Further, high performance nonlinear devices (e.g. varactors) and switches (e.g. pin diodes), applicable for high frequencies and high Pout will be investigated. Finally, the realization of the optimized matching networks based on these nonlinear components will be performed.

在功率、带宽、效率和冷却方面，移动的基站的最关键部分是PA。诸如具有高回退功率电平的WCDMA和LTE之类的新通信标准的出现进一步加剧了这些问题。功率放大器的峰值和回退效率较差，会影响所需冷却系统的尺寸和变送器的预期寿命。另一方面，较差的带宽可能导致多应用覆盖的多个PA要求。因此，高效的宽带线性功率放大器对于实现小型、可靠和低成本的发射机至关重要。到目前为止，这些要求不能同时实现传统的方法，如线性A类，AB类，J类和谐波调谐PA。在该提案中，可重新配置的PA，使用可控匹配网络是调查的重点。该扩展的目的是在带宽、输出功率和线性度方面改善项目第一阶段的成果。在这种情况下，高性能的宽带开关模式功率放大器的设计在不同的回退功率水平，通过输出匹配网络和栅极电压的优化，将进行研究。此外，高性能的非线性器件（如变容二极管）和开关（如pin二极管），适用于高频率和高Pout将进行研究。最后，将执行基于这些非线性组件的优化匹配网络的实现。