High dynamic range SQUID readout for frequency-domain multiplexers

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Abstract

A 16-SQUID array has been designed and fabricated, which shows 0.12 μΦ 0 Hz−1/2 flux noise at 4.2 K. The readout amplifier based on a cryogenic silicon-germanium bipolar transistor employs short-delay negative flux feedback and reaches 7 MHz bandwith for a 1 Φ 0p-p signal. The −1 dB compression is reached approximately at 4.2 Φ 0p-p amplitude when the signal frequency is 1 MHz. In the feedback mode the flux noise is anomalously increased to 0.35 μΦ 0 Hz−1/2.
Original languageEnglish
Pages (from-to)952 - 957
Number of pages6
JournalJournal of Low Temperature Physics
Volume151
Issue number3-4
DOIs
Publication statusPublished - 2008
MoE publication typeA1 Journal article-refereed
Event12th International Workshop on Low Temperature Detectors (LTD12) - Paris, France
Duration: 22 Jul 200727 Jul 2007

Fingerprint

SQUIDs
multiplexing
dynamic range
readout
Fluxes
Germanium
Feedback
Bipolar transistors
Silicon
bipolar transistors
Cryogenics
cryogenics
germanium
amplifiers
silicon

Keywords

  • Cryogenic semiconductor amplifiers
  • SQUID arrays
  • SQUIDs

Cite this

@article{3cebc9712d6c48e5a02c5b6ce788bbd7,
title = "High dynamic range SQUID readout for frequency-domain multiplexers",
abstract = "A 16-SQUID array has been designed and fabricated, which shows 0.12 μΦ 0 Hz−1/2 flux noise at 4.2 K. The readout amplifier based on a cryogenic silicon-germanium bipolar transistor employs short-delay negative flux feedback and reaches 7 MHz bandwith for a 1 Φ 0p-p signal. The −1 dB compression is reached approximately at 4.2 Φ 0p-p amplitude when the signal frequency is 1 MHz. In the feedback mode the flux noise is anomalously increased to 0.35 μΦ 0 Hz−1/2.",
keywords = "Cryogenic semiconductor amplifiers, SQUID arrays, SQUIDs",
author = "Mikko Kiviranta",
year = "2008",
doi = "10.1007/s10909-008-9765-y",
language = "English",
volume = "151",
pages = "952 -- 957",
journal = "Journal of Low Temperature Physics",
issn = "0022-2291",
publisher = "Springer",
number = "3-4",

}

High dynamic range SQUID readout for frequency-domain multiplexers. / Kiviranta, Mikko.

In: Journal of Low Temperature Physics, Vol. 151, No. 3-4, 2008, p. 952 - 957.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - High dynamic range SQUID readout for frequency-domain multiplexers

AU - Kiviranta, Mikko

PY - 2008

Y1 - 2008

N2 - A 16-SQUID array has been designed and fabricated, which shows 0.12 μΦ 0 Hz−1/2 flux noise at 4.2 K. The readout amplifier based on a cryogenic silicon-germanium bipolar transistor employs short-delay negative flux feedback and reaches 7 MHz bandwith for a 1 Φ 0p-p signal. The −1 dB compression is reached approximately at 4.2 Φ 0p-p amplitude when the signal frequency is 1 MHz. In the feedback mode the flux noise is anomalously increased to 0.35 μΦ 0 Hz−1/2.

AB - A 16-SQUID array has been designed and fabricated, which shows 0.12 μΦ 0 Hz−1/2 flux noise at 4.2 K. The readout amplifier based on a cryogenic silicon-germanium bipolar transistor employs short-delay negative flux feedback and reaches 7 MHz bandwith for a 1 Φ 0p-p signal. The −1 dB compression is reached approximately at 4.2 Φ 0p-p amplitude when the signal frequency is 1 MHz. In the feedback mode the flux noise is anomalously increased to 0.35 μΦ 0 Hz−1/2.

KW - Cryogenic semiconductor amplifiers

KW - SQUID arrays

KW - SQUIDs

U2 - 10.1007/s10909-008-9765-y

DO - 10.1007/s10909-008-9765-y

M3 - Article

VL - 151

SP - 952

EP - 957

JO - Journal of Low Temperature Physics

JF - Journal of Low Temperature Physics

SN - 0022-2291

IS - 3-4

ER -