SQUID readout and flux feedback based ona a SiGe bipolar transistor at 4.2K

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Abstract

I have experimented with a SiGe heterojunction transistor at 4.2 K acting as a readout amplifier for dc SQUIDs. Flux noise level of 0.35 0 / Hz was reached with one SQUID type. Slew rate of 1.7 107 0/s was observed with another SQUID type in a flux feedback arrangement having a calculated >108 0/s slew rate. The SiGe transistor dissipated 9 mW at 4.2 K, but dissipation levels in the 0.1 mW range appear feasible.
Original languageEnglish
Title of host publicationProceedings of the 7th International Workshop on Low Temperature Electronics, WOLTE-7
PublisherEuropean Space Agency ESA
Pages187-193
Publication statusPublished - 2006
MoE publication typeB3 Non-refereed article in conference proceedings
Event7th International Workshop on Low Temperature Electronics, WOLTE-7 - Noordwijk, Netherlands
Duration: 21 Jun 200623 Jun 2006

Publication series

SeriesESA Conference Proceedings
NumberWPP-264
ISSN1022-6656

Workshop

Workshop7th International Workshop on Low Temperature Electronics, WOLTE-7
Abbreviated titleWOLTE-7
CountryNetherlands
CityNoordwijk
Period21/06/0623/06/06

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