宽带多赫蒂放大器的线性化

2013 11th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services (TELSIKS) Pub Date : 2013-10-01 DOI:10.1109/TELSKS.2013.6704429

A. Doric, N. Males-Ilic, A. Atanasković, B. Milovanovic

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引用次数: 3

摘要

本文研究了频率范围为0.85-1.15GHz的宽带双向多尔蒂放大器的线性化问题。Doherty配置的载波和峰值放大器包括飞思卡尔的晶体管MRF281S LDMOSFET，其最大输出功率为4W，宽带集总元件匹配电路。放大器的线性化是通过在Doherty放大器的峰值单元输出处提取二次谐波和四阶非线性信号，经过幅度和相位调整后注入到载波单元的输入和输出处实现的。在输入功率为0dBm、5dBm、10dBm和15dBm的情况下，对频率间隔为10MHz、20MHz、40MHz和80MHz的两个音调以及WCDMA数字调制信号，考虑了线性化的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Linearization of broadband doherty amplifier

The linearization of broadband two-way Doherty amplifier for application in the frequency range 0.85-1.15GHz is considered in this paper. The carrier and peaking amplifiers in Doherty configuration comprise Freescale's transistor MRF281S LDMOSFET characterized by the maximum output power 4W and the broadband lumped element matching circuits. The linearization of the amplifier is carried out by the second harmonics and fourth-order nonlinear signals that are extracted at the output of the peaking cell, adjusted in amplitude and phase and injected at the input and output of the carrier cell in Doherty amplifier. The effects of linearization are considered for two tones separated in frequency by 10MHz, 20MHz, 40MHz and 80MHz at different input power levels of 0dBm, 5dBm, 10dBm and 15dBm, as well as for WCDMA digitally modulated signal.

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来源期刊

2013 11th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services (TELSIKS)

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