Search Results - "Cavillot, J."
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The REACH radiometer for detecting the 21-cm hydrogen signal from redshift z ≈ 7.5–28
Published in Nature astronomy (01-08-2022)“…Observations of the 21-cm line from primordial hydrogen promise to be one of the best tools to study the early epochs of the Universe: the dark ages, the…”
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Author Correction: The REACH radiometer for detecting the 21-cm hydrogen signal from redshift z ≈ 7.5–28
Published in Nature astronomy (01-11-2022)Get full text
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Fast frequency sweep using the Method of Moments: including the effect of the substrate
Published in 2022 International Conference on Electromagnetics in Advanced Applications (ICEAA) (05-09-2022)“…We propose an interpolation technique for the impedance matrix that accounts for the presence of the substrate. The method is based on the observation that, in…”
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Conference Proceeding -
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Coupling Between Feeders of a Multibeam Metasurface Antenna
Published in 2022 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO) (06-07-2022)“…We study the port-to-port coupling of leaky-wave metasurface (MTS) antennas comprising multiple feeds. An efficient Method of Moments (MoM) simulation tool is…”
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Conference Proceeding -
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Multi-Beamforming Using Metasurface-Antenna Co-Designed with Energy-Efficient Adaptive Electronics
Published in 2024 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) (03-04-2024)“…'Smart Integrated Electromagnetic Skins', acting as antenna arrays that are conformal to the shape of the object they are mounted on, are introduced. The…”
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Conference Proceeding -
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Receiver design for the REACH global 21-cm signal experiment
Published 30-06-2023“…We detail the the REACH radiometric system designed to enable measurements of the 21-cm neutral hydrogen line. Included is the radiometer architecture and…”
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Efficient analysis of a 3D antenna installed on a finite ground plane
Published in IET Conference Proceedings (09-04-2018)“…A fast spectral approach is proposed for the analysis of 3D antenna installed on a finite ground plane itself located on an infinite dielectric layer. The…”
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Conference Proceeding -
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The REACH radiometer for detecting the 21-cm hydrogen signal from redshift 7.5 to 28
Published 13-10-2022“…Nature Astronomy 6, p 984 998, 2022 Observations of the 21-cm line from primordial hydrogen promise to be one of the best tools to study the early epochs of…”
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Journal Article -
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Radio antenna design for sky-averaged 21 cm cosmology experiments: the REACH case
Published 21-09-2021“…Following the reported detection of an absorption profile associated with the 21~cm sky-averaged signal from the Cosmic Dawn by the EDGES experiment in 2018, a…”
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Journal Article