Modeling the effects of fabrication spreads and noise on series coupled arrays of bi-SQUIDs

Berggren, Susan; Longhini, Patrick; Escobar, Anna Leese de; Palacios, Antonio Lozano; Mukhanov, Oleg A.; Prokopenko, G.I.

doi:10.1109/isec.2013.6604303

Cited by 7 publications

(2 citation statements)

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“…The combination of this property with the high linearity response of bi-SQUIDs seems very promising and has therefore attracted great research interest in developing and implementing one-and two-dimensional bi-SQUID SQIFs. Numerical investigation of array structures [35][36][37][38] showed that a Gaussian law of the cell loop area distribution is the most preferable for designing bi-SQUID SQIFs. The results achieved in experimental realizations and studies of both SQIF-like and regular arrays of bi-SQUIDs are considered below.…”

Section: Arrays Of Bi-squidsmentioning

confidence: 99%

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Bi-SQUID: design for applications

Kornev

Kolotinskiy

Mukhanov

2020

Supercond. Sci. Technol.

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A review of the theory of bi-SQUIDs and the experimental studies of bi-SQUID-based devices is presented. The reported output voltage linearity of the fabricated devices ( ∼ 40 to 45 dB) is much higher than that observed for dc SQUIDs ( ∼ 20 dB). Recent numerical simulation evidence indicates that the linearity can be further improved to at least 60 to 70 dB. Results from a wide, multi-parameter optimization analysis are considered in the form of parameter domains for the voltage-response linearity. Thermal–noise influence, load impact and interfacing requirements are examined. Potential applications of the devices are discussed.

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Section: Arrays Of Bi-squidsmentioning

confidence: 99%

“…As shown in [35,36,56], the asymmetry impacts on the voltage response form and at g ∼ 10% reduces the attainable linearity from 90-100 dB down to 70 dB [56]. However, for the Nb process, this impact may be neglected since the spread in critical currents within a chip is typically much less.…”

Section: Thermal Noise and Asymmetry Impactmentioning

confidence: 99%