The Ka-band receiver for the QUIJOTE experiment

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Identificadores
URI: https://hdl.handle.net/10902/27562
ISBN: 978-1-61284-235-6
ISBN: 978-2-87487-022-4
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Autoría
Cano de Diego, Juan LuisAutoridad Unican; Villa Benito, EnriqueAutoridad Unican; Aja Abelán, BeatrizAutoridad Unican; Fuente Rodríguez, Luisa María de laAutoridad Unican; Artal Latorre, EduardoAutoridad Unican; Watson, Robert; Blackhurst, Edward; Edgley, John; Baines, Colin
Fecha
2011
Derechos
© 2011 EuMA (European Microwave Association)
Publicado en
Proceedings of the 41st European Microwave Conference (EuMC), Manchester, UK, 2011, 1181-1184
Editorial
Institute of Electrical and Electronics Engineers, Inc.
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Palabras clave
Radiometer
Radiometry
Radio astronomy
Very low noise receivers
Cryogenic amplifiers
HEMT
InP
Resumen/Abstract
The 26-36 GHz receiver for a radio astronomy radiometer, to characterize the polarization of the Cosmic Microwave Background, is presented. This receiver is based on very low noise cryogenically cooled amplifiers in the front-end module, while in the back-end module a broadband amplification and direct detection chain is operated at room temperature. Noise temperature of the low-noise amplifier (LNA) is 19 K when cooled at 18 K. Experimental results show a good sensitivity of the complete receiver with an effective bandwidth around 8 GHz. Moreover, output detected voltages agree with estimated values.
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