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1. 发明申请

WO2014019071A1 EXTENDED BANDWIDTH DIGITAL DOHERTY TRANSMITTER 审中-公开
标题翻译：扩展带宽数字多功能发射机
公开(公告)号：WO2014019071A1
公开(公告)日：2014-02-06
申请号：PCT/CA2013/000678
申请日：2013-07-31
申请人： GHANNOUCHI, Fadhel , DARRAJI, Ramzi
发明人： GHANNOUCHI, Fadhel , DARRAJI, Ramzi
IPC分类号： H04B1/04 , H03F1/07 , H03F3/20 , H04L27/00 , H04W24/02 , H04W88/00
CPC分类号： H03F1/0288 , H03F1/3241 , H03F3/24 , H04B1/0475 , H04B1/0483 , H04L27/2623 , H04L27/368
摘要： An extended bandwidth digital Doherty transmitter includes a baseband signal processing block including a digital predistortion unit. It also includes a digital signal distribution unit and a digital phase alignment unit, a signal up-conversion block, an RF power amplification block including the carrier amplifier and one or two peaking amplifiers; and an RF Doherty combining network. In another aspect, a digital Doherty transmitter includes a baseband signal block including a digital predistortion unit, a digital signal distribution unit and an adaptive digital phase alignment unit. In this aspect a signal up-conversion block includes three digital-to-analog converters (DACs) and a tri-channel up-converter or three single-channel up-converters. There is also an RF power amplification block including the carrier amplifier and two peaking amplifiers, and an RF Doherty combining network which includes quarter wavelength impedance transformers.
摘要翻译：扩展带宽数字Doherty发射机包括包括数字预失真单元的基带信号处理块。它还包括数字信号分配单元和数字相位对准单元，信号上变换块，包括载波放大器和一个或两个峰值放大器的RF功率放大块; 和RF Doherty组合网络。另一方面，数字Doherty发射机包括包括数字预失真单元，数字信号分配单元和自适应数字相位对准单元的基带信号块。在这方面，信号上变换块包括三个数模转换器（DAC）和三通道上变频器或三个单通道上变频器。还有一个RF功率放大块，包括载波放大器和两个峰值放大器，以及包括四分之一波长阻抗变换器的RF Doherty组合网络。

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