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Amplificateur de puissance à polarisation contrôlée et à faible variation du temps de propagation de groupe pour systèmes de localisation en technologie ultra large bande impulsionnelle

Abstract : The use of impulse radio (IR) ultra-wideband (UWB) technology for indoor localization systems both improves signal accuracy and reduces disturbances from multipath. A new standard for emergency situations requires the design of a higher output power UWB power amplifier (PA) as the usual maximum output power has been raised by 20 dB in order to allow the signal to pass through thick obstacles, thus helping rescue operations. First, a UWB PA state of the art is presented, and the design of both a power cell and a driver cell are detailed, to achieve the required output power level and additional gain, respectively. Finally, a bias controlled amplification system is described, taking advantage of the IR profile of the UWB signal. The PA is activated only for pulse occurrences, reducing drastically its power consumption.
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https://tel.archives-ouvertes.fr/tel-01674216
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Submitted on : Tuesday, January 2, 2018 - 1:54:22 AM
Last modification on : Saturday, October 5, 2019 - 3:39:21 AM
Long-term archiving on: : Wednesday, May 2, 2018 - 3:38:28 PM

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POLGE_DAVID_2016.pdf
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  • HAL Id : tel-01674216, version 1

Citation

David Polge. Amplificateur de puissance à polarisation contrôlée et à faible variation du temps de propagation de groupe pour systèmes de localisation en technologie ultra large bande impulsionnelle. Autre [cond-mat.other]. Université de Bordeaux, 2016. Français. ⟨NNT : 2016BORD0206⟩. ⟨tel-01674216⟩

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