A Wideband RF and Wideband IF DSB SIS Mixer

Igor Lapkin, Victor Y. Belitsky, Alexey Pavolotsky, Cristian Daniel López, Denis Meledin, Erik Sundin, Mohamed Aniss Mebarki, Leif Helldner, Magnus Strandberg, Mathias Fredrixon, Sven-Erik Ferm, Vincent Desmaris

Published Jan 1, 2024• 0 citations

OpenAlex

Abstract

The ALMA 2030 Roadmap document calls for a new generation of receivers for ALMA. Such Wideband Sensitivity Upgrade, WSU, aims to improve the existing receiver bands of ALMA with prospectively 4-times wider IF bandwidth and possibly a wider RF bandwidth. In order to explore a possibility to make wideband RF and simultaneously wideband IF receiver, we constructed and built a DSB SIS mixer covering the RF band 210-380 GHz. The mixer exhibits a 4 – 20 GHz IF band and produces non-corrected nose temperature between 3hf/k and 4 hf/k averaged over the IF band.

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