Published November 1999 | Version v1
Journal article Metadata-only

Two-dimensional spatial frequency response of SQUID planar gradiometers

Creators

  • 1. Pontificia Universidade Catolica do Rio de Janeiro, Department of Physics and Department of Electrical Engineering, Rua Marques de Sao Vicente 225, Rio de Janeiro, RJ 22453-900 (Brazil)

Description

Planar gradiometers can be modelled as two-dimensional spatial filters, taking into account area, baseline and shape of the coils. We associate a spatial frequency response with each configuration studied and show that planar gradiometers behave as band-pass spatial filters. Also, in order to determine a spatial frequency range for typical magnetic field sources, we calculate the two-dimensional Fourier transform of the field due to a current dipole for several liftoffs. Important issues such as gradiometer spatial cutoff frequencies, bandwidth and symmetry are discussed. (author)

Additional details

Publishing Information

Journal Title
Superconductor Science and Technology (Online)
Journal Volume
12
Journal Issue
11
Journal Page Range
p. 949-952
ISSN
1361-6668

Conference

Title
International superconductive electronics conference
Dates
21-25 Jun 1999
Place
Berkeley, CA (United States)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
Uzbekistan
INIS RN
31041619
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
INTERFEROMETERS; MAGNET COILS; MAGNETIC FIELD CONFIGURATIONS; MAGNETIC FILTERS; NUMERICAL ANALYSIS; SQUID DEVICES; SUPERCONDUCTORS; TWO-DIMENSIONAL CALCULATIONS
Descriptors DEC
ELECTRIC COILS; ELECTRICAL EQUIPMENT; ELECTRONIC EQUIPMENT; EQUIPMENT; FILTERS; FLUXMETERS; MATHEMATICS; MEASURING INSTRUMENTS; MICROWAVE EQUIPMENT; SUPERCONDUCTING DEVICES