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Contribution au développement d’un banc de mesures temporelles 4-canaux pour la caractérisation avancée de composants et de sous-systèmes RF non linéaires

Lotfi Ayari 1
1 XLIM-SRF - Systèmes RF
XLIM - XLIM : SRF
Abstract : The future communications for civil and military applications will use complex wideband modulated signals to be transmitted through multi-channel DOHERTY power amplifiers which should have high performance in terms of power, efficiency, OBO, and bandwidth. In order to meet these stringent requirements, designers need time-domain characterization tools for calibrated measurements and for optimizing voltages and currents at both ports of non-linear connectorized or on-wafer devices. This work successfully implements time-domain characterization tools used to meet specific needs for transistor modeling, to optimize their operation in terms of pulse to pulse stability, and to search optimal conditions of their operation modes in a Doherty power amplifier. For this implementation, mathematical modeling is performed to evaluate sampler’s performances in terms of time-domain sampling efficiency in order to choose the best suited sampling architecture for RF time-domain measurements. Rigorous calibration procedures have been developed to obtain simultaneously full time-domain calibrated waveforms (from low Frequencies to Microwave frequencies).
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https://tel.archives-ouvertes.fr/tel-01958199
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Submitted on : Monday, December 17, 2018 - 5:55:24 PM
Last modification on : Wednesday, February 27, 2019 - 1:13:30 AM

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  • HAL Id : tel-01958199, version 1

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Lotfi Ayari. Contribution au développement d’un banc de mesures temporelles 4-canaux pour la caractérisation avancée de composants et de sous-systèmes RF non linéaires. Electronique. Université de Limoges, 2016. Français. ⟨NNT : 2016LIMO0117⟩. ⟨tel-01958199⟩

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