...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Broadcasting, IEEE Transactions on >Efficient Linear Amplification Using Digitally Predistorted Overdriven Power Amplifiers
【24h】

Efficient Linear Amplification Using Digitally Predistorted Overdriven Power Amplifiers

机译：使用数字预失真过驱动功率放大器进行有效的线性放大

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

This paper investigates the effects of crest factor reduction and digital predistortion on the performances of communication and broadcasting systems. The overdrive of digitally predistorted power amplifiers is proposed for power efficient linear amplification of amplitude modulated signals having high peak to average power ratio. This is achieved by adding, at the input of the digital predistortion system, a clipping function to allow for an overdrive of the linearized power amplifier while meeting spectrum emission mask linearity requirements. The proposed technique is experimentally validated using a GaN Doherty power amplifier driven by long-term evolution (LTE) signals. Measurement results show that the overdriven power amplifier can deliver up to 2.5 dB extra output power, up to 80% enhancement in the power utilization factor, and up to 20% relative increase in the power efficiency while being compliant with the linearity requirements of the LTE standard.
机译：本文研究了波峰因数降低和数字预失真对通信和广播系统性能的影响。提出了数字预失真功率放大器的过驱动，用于具有高峰均功率比的幅度调制信号的功率有效线性放大。这是通过在数字预失真系统的输入端添加削波函数来实现的，该削波函数允许线性化功率放大器的过驱动，同时满足频谱发射掩模的线性要求。所提出的技术通过使用由长期演进（LTE）信号驱动的GaN Doherty功率放大器进行了实验验证。测量结果表明，过驱动功率放大器可以提供高达2.5 dB的额外输出功率，功率利用率提高高达80％，功率效率相对提高高达20％，同时符合LTE的线性要求标准。

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