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Systèmes d’antennes Ultra-Large-Bande pour Applications In-Band Full-Duplex.

Abstract : In-band full-duplex technology aims to mitigate the scarcity of spectral resources by allowing two radios to communicate simultaneously in the same frequency band. The main challenge for full-duplex radios is to cancel the self-interference signals, which couple from the transmitter of one radio to its own receiver, by implementing various self-interference cancellation circuity at the antenna, analog, and digital stages of the radio front-end. Conventional selfinterference cancellation techniques were dedicated for narrowband systems and little work has been conducted to extend their performance for wideband operation. Thus, in this work, we focus on studying the wideband potential of the available cancellation techniques and implementing wideband full-duplex systems based on those techniques. The implemented systems are based on the near-field cancellation technique which uses four antennas and two baluns. The systems’ merits vary from extremely wide bandwidth to higher mechanical solidity and dual-polarization, but they all can maintain a decent amount of cancellation
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Submitted on : Friday, July 8, 2022 - 6:22:10 PM
Last modification on : Friday, August 5, 2022 - 2:54:52 PM


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  • HAL Id : tel-03718475, version 1


Hadi Hijazi. Systèmes d’antennes Ultra-Large-Bande pour Applications In-Band Full-Duplex.. Electronique. Université de Bretagne Occidentale, Brest; École Nationale Supérieure de Techniques Avancées Bretagne, 2021. Français. ⟨NNT : ⟩. ⟨tel-03718475⟩



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