• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>2015 10th European Microwave Integrated Circuits Conference >GaN MMICs for microwave backhaul: Doherty vs. combined class-AB power amplifier
【24h】

GaN MMICs for microwave backhaul: Doherty vs. combined class-AB power amplifier

机译：用于微波回程的GaN MMIC：Doherty与AB类组合功率放大器

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The Doherty power amplifier is competing with class-AB amplifiers in mobile base-stations, thanks to its superior performances in terms of back-off efficiency. However, in case of microwave backhaul applications, where higher center frequencies and wider bandwidths are needed, it is still not clear if the linearity-efficiency trade-off is in favour of the DPA or of the classical class-AB. In this work, this point is treated reporting the design and experimental characterization of two GaN MMIC power amplifiers for microwave radio links: a combined class-AB and a Doherty amplifier fabricated with same technology and total active device periphery. The modules have been characterized from 6.6 GHz to 7.3 GHz under large signal condition. The obtained results show that the Doherty amplifier can have a beneficial effect on the energy optimization of the system at the expense of larger chip area with respect to the class-AB. Both circuits achieve 40dBm saturated output power, but at 6dB back-off the Doherty shows an efficiency improvement of about 50%. The amplitude and phase distortions of the two PAs have also been measured, and a system level evaluation is provided highlighting pros and cons of each architecture in terms of linearity.
机译：Doherty功率放大器在后退效率方面具有出色的性能，因此与移动基站中的AB类放大器竞争。然而，在微波回程应用中，需要更高的中心频率和更宽的带宽，线性效率效率的折衷是否有利于DPA还是经典的AB类仍不清楚。在这项工作中，处理这一点的方法是报告两个用于微波无线电链路的GaN MMIC功率放大器的设计和实验特性：组合在一起的AB类和Doherty放大器，采用相同的技术和整个有源器件外围制造。在大信号条件下，模块的特征是从6.6 GHz到7.3 GHz。获得的结果表明，相对于AB类，Doherty放大器可以以更大的芯片面积为代价，对系统的能量优化产生有益的影响。两种电路均达到40dBm的饱和输出功率，但是在6dB的补偿下，Doherty的效率提高了约50％。还测量了两个PA的幅度和相位失真，并提供了系统级评估，突出了每种架构在线性方面的利弊。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号