High Linearity SQIF-like Josephson-Junction Structures
Victor K. Kornev, Igor I. Soloviev, Nikolai V. Klenov, and
Oleg A. Mukhanov, Senior Member, IEEE
Abstract—Recently we reported design approaches for the synthesis of multi-SQUID structures capable of providing high linearity voltage response. These structures were developed to form periodic voltage responses. This paper presents possible design solutions for multi-element structures providing SQIF-like high linearity voltage response. The approach is based on the use of a differential scheme of two parallel SQIFs with arrays oppositely frustrated by applied magnetic field δB. The differential scheme enables a high efficiency synthesis of highly linear SQIF response by subtraction of deviations from linear law.
Index Terms— SQUID arrays, parallel SQIF, differential scheme, amplifiers, high linearity, dynamic range.
Manuscript received 19 August 2008.
This work was supported by ONR under grant RUP1-1493-05-MO via CRDF GAP and in part by ISTC grant 3743 and Russian grants on scientific schools PGSS 5408.2008.2 and PGSS 133.2008.2.
V. K. Kornev, I. I. Soloviev, N. V. Klenov are with Moscow State University, Moscow 119991, Russia. (phone: 7-495-939-4351, fax: 7-495-939-3000, e-mail: kornev@phys.msu.ru).
O. A. Mukhanov is with the HYPRES, 175 Clearbrook Road, Elmsford, NY 10523, USA (e-mail: mukhanov@hypres.com).
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