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Abstract
We present the design and realization of 4 GHz cryogenic low noise amplifiers used as IF amplifiers in a radio-camera receiver (SISYFOS project) which is to be installed in the Onsala 20 m millimetre wave telescope. We show that a very simple and compact input design provides good matching over a broad bandwidth while ensuring the stability of the amplifier. The minimum noise temperature and the gain of the amplifier measured at cryogenic ambient temperature over the specified bandwidth are 7 K and 28 dB respectively.
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Schedule a callMore From: Comptes Rendus de l'Academie des Sciences Series IIB Mechanics Physics Astronomy
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