利用频谱测量卫星转发器/基站发射机的AM-AM和AM-PM失真特性

International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of Pub Date : 1900-01-01 DOI:10.1109/RAST.2003.1303897

F. Ghannouchi, A. Ghazel

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引用次数: 1

摘要

本文提出了一种利用功率谱测量卫星转发器和基站发射机功率放大器的AM-AM和AM-PM失真的方法。它包括使用不相等的三音信号来驱动基站功率放大器的发射机或卫星应答器的功率放大器，并在发射机/应答器的输出端测量这些音调的电平。通过比较放大器输入和输出处的频谱，可以用近似表达式计算出发射机或应答机功率放大器的AM-AM压缩系数和AM-PM转换系数。

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AM-AM and AM-PM distortion characterization of satellite transponders/base station transmitters using spectrum measurements

This paper proposes a method for measuring AM-AM and AM-PM distortion of power amplifiers (PAs) of satellite transponders and base station transmitters using power spectrum measurements. It consists of using unequal three-tone signal to drive either the base station power amplifier's transmitter or the satellite transponder's power amplifier and to measure the level of these tones at the output of the transmitter/transponder. By comparison of the spectrum at the input and output of the PA, one can calculate the AM-AM compression factor and the AM-PM conversion coefficient of the power amplifier of the transmitter or transponder using close form expressions.

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International Conference on Recent Advances in Space Technologies, 2003. RAST '03. Proceedings of

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