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Caractérisation électromagnétique du canal de propagation sur silicium : applications aux interconnexions sans fils intra-puce pour les systèmes WiNoC

Abstract : In the age of artificial intelligence, Big Data and the Internet of Things, the development of NoCs has become a priority. As part of the BBC project, we have opted for WiNoC interconnects, which provide efficient communication requirements at the intra-chip level (low latency, high throughput, minimal energy efficiency, compatibility with CMOS technology, adaptability for broadcast).This thesis focuses on the electromagnetic study the physical layer of WiNoC, and particularly on the characterization of propagation channels on silicon substrates.In this context, we highlight, through simulations and measurements in Ka and V bands, the problems of propagation in Si structures at very high frequency (cavities, surface waves and multiple paths).Subsequently, we propose a solution to limit these problems (due to reflections on the Si / Air interfaces) by adding an absorbing layer around the substrate. Using simulations and measurements in Q and V bands, we show improved transmission with a large bandwidth (>16 GHz).In order to reduce the size of the antennas and to increase the data rate, we study in the Sub-THz band, networks of monopoles embedded in a Si substrate placed between two metal plates.Finally, we estimate the performance and we show the possibility of transmitting at least 12 Gbps over a range of 21.2 mm and with an energy efficiency of the order of 4.5 pJ / bit. These results are comparable with competing solutions (WiNoC, RF interconnects, optical interconnects).
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Ihsan El Masri. Caractérisation électromagnétique du canal de propagation sur silicium : applications aux interconnexions sans fils intra-puce pour les systèmes WiNoC. Electronique. Université de Bretagne occidentale - Brest, 2019. Français. ⟨NNT : 2019BRES0060⟩. ⟨tel-02497047⟩

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