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Author

Karl-Marie Devoles

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Aug 2026

On the Minimisation of Beam Chromaticity in a TEM Horn Antenna for Global 21-cm Cosmology

The detection of the sky-averaged 21 cm signal from the Cosmic Dawn requires antennas whose beam pattern varies minimally with frequency, since beam chromaticity couples the bright, spatially structured Galactic foreground into spurious spectral structure that can obscure the faint cosmological signal. We present a P...

I. Farhat, Karl-Marie Devoles, Kristian Zarb Adami · 0 citations

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