Receiver design for the REACH global 21-cm signal experiment
| dc.contributor.author | Spinelli Marta | |
| dc.contributor.author | Roque, Ian | |
| dc.contributor.author | Razavi-Ghods, Nima | |
| dc.date.accessioned | 2026-02-09T09:24:58Z | |
| dc.date.available | 2026-02-09T09:24:58Z | |
| dc.date.issued | 2025 | |
| dc.description.abstract | We detail the REACH radiometric system designed to enable measurements of the 21-cm neutral hydrogen line. Included is the radiometer architecture and end-to-end system simulations as well as a discussion of the challenges intrinsic to highly-calibratable system development. Following this, we share laboratory results based on the calculation of noise wave parameters utilising an over-constrained least squares approach. For five hours of integration on a custom-made source with comparable impedance to that of the antenna used in the field, we demonstrate a calibration RMSE of 80 mK. This paper therefore documents the state of the calibrator and data analysis in December 2022 in Cambridge before shipping to South Africa. | |
| dc.identifier.citation | Roque, I.L., Razavi-Ghods, N., Carey, S.H., Ely, J.A., Handley, W., Magro, A., Chiello, R., Huang, T., Alexander, P., Anstey, D. and Bernardi, G., 2025. Receiver design for the REACH global 21-cm signal experiment. Experimental Astronomy, 59(1), pp.1-30. | |
| dc.identifier.uri | https://doi.org/10.1007/s10686-024-09975-3 | |
| dc.identifier.uri | https://hdl.handle.net/10566/21923 | |
| dc.language.iso | en | |
| dc.publisher | Springer Science and Business Media B.V. | |
| dc.subject | Radiometer | |
| dc.subject | Calibration | |
| dc.subject | Instrumentation | |
| dc.subject | NATURAL SCIENCES::Physics::Astronomy and astrophysics::Cosmology | |
| dc.subject | Dark ages | |
| dc.title | Receiver design for the REACH global 21-cm signal experiment | |
| dc.type | Article |