Accession Number : ADD017469

Title :   Channel Equalized DC Squid Flux-Locked Loop.

Descriptive Note : Patent filed 26 Jul 93, Patented 7 Feb 95,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Gershenson, Meir ; McDonald, Robert J

Report Date : 07 Feb 1995

Pagination or Media Count : 7

Abstract : A DC superconductor quantum interference device (i.e. DC SQUID) is used in a flux-looked loop as a sensitive detector of magnetic flux. Prior art devices of this sort had a transfer function which was frequency-limited by the transfer function of impedance matching circuitry which is used to connect the DC SQUID with the first preamplifier, which amplifies the DC SQUID signal before it is applied to a detector circuit. The present invention corrects this frequency limitation by creating a compensating circuit having a transfer function which is the inverse of that of the impedance matching circuitry and inserting it in the system after the first preamplifier and before the detector circuit. (MM)

Descriptors :   *SUPERCONDUCTORS, *MAGNETIC DETECTORS, *PATENTS, SIGNAL PROCESSING, MAGNETIC FIELDS, TRANSFER FUNCTIONS, TRANSMISSION LINES, ELECTRICAL IMPEDANCE

Subject Categories : Magnetic & Electric Fld Detection & Detectors
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE