Processing

Please wait...

PATENTSCOPE will be unavailable a few hours for maintenance reason on Saturday 31.10.2020 at 7:00 AM CET
Settings

Settings

Goto Application

1. WO2007138508 - SENSOR DEVICE WITH ADAPTIVE FIELD COMPENSATION

Publication Number WO/2007/138508
Publication Date 06.12.2007
International Application No. PCT/IB2007/051786
International Filing Date 11.05.2007
IPC
G01R 33/09 2006.01
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33Arrangements or instruments for measuring magnetic variables
02Measuring direction or magnitude of magnetic fields or magnetic flux
06using galvano-magnetic devices
09Magneto-resistive devices
G01N 33/543 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/-G01N31/131
48Biological material, e.g. blood, urine; Haemocytometers
50Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
53Immunoassay; Biospecific binding assay; Materials therefor
543with an insoluble carrier for immobilising immunochemicals
CPC
B82Y 25/00
BPERFORMING OPERATIONS; TRANSPORTING
82NANOTECHNOLOGY
YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
25Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
G01N 27/745
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means
72by investigating magnetic variables
74of fluids
745for detecting magnetic beads used in biochemical assays
G01N 33/54326
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
48Biological material, e.g. blood, urine
50Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
53Immunoassay; Biospecific binding assay; Materials therefor
543with an insoluble carrier for immobilising immunochemicals
54313the carrier being characterised by its particulate form
54326Magnetic particles
G01R 33/093
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33Arrangements or instruments for measuring magnetic variables
02Measuring direction or magnitude of magnetic fields or magnetic flux
06using galvano-magnetic devices, e.g. Hall effect devices; using magneto-resistive devices
09Magnetoresistive devices
093using multilayer structures, e.g. giant magnetoresistance sensors
G01R 33/12
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33Arrangements or instruments for measuring magnetic variables
12Measuring magnetic properties of articles or specimens of solids or fluids
G01R 33/1269
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33Arrangements or instruments for measuring magnetic variables
12Measuring magnetic properties of articles or specimens of solids or fluids
1269of molecules labeled with magnetic beads
Applicants
  • KONINKLIJKE PHILIPS ELECTRONICS N. V. [NL]/[NL] (AllExceptUS)
  • DURIC, Haris [NL]/[NL] (UsOnly)
  • KAHLMAN, Josephus Arnoldus Henricus Maria [NL]/[NL] (UsOnly)
Inventors
  • DURIC, Haris
  • KAHLMAN, Josephus Arnoldus Henricus Maria
Agents
  • SCHOUTEN, Marcus M.
Priority Data
06114696.530.05.2006EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SENSOR DEVICE WITH ADAPTIVE FIELD COMPENSATION
(FR) DISPOSITIF DE DÉTECTION À COMPENSATION DE CHAMP ADAPTATIVE
Abstract
(EN)
The invention relates to a magnetic sensor device comprising an excitation wire for the generation of an alternating magnetic excitation field (Bi) and a GMR sensor (12) for sensing reaction fields (B2) generated by magnetized particles (2) in reaction to the excitation fields. Moreover, it comprises a compensator (15) for the generation of a magnetic compensation field (B3) that adaptively cancels predetermined spectral components of all magnetic fields (B2, B3) which lie in the sensitive direction of the magnetic sensor element (12). Measurements of the GMR sensor (12) are thus made robust against gain variations of the sensor.
(FR)
L'invention concerne un dispositif de détection magnétique qui comprend un fil d'excitation conçu pour générer un champ d'excitation magnétique alternatif (Bi) et un capteur GMR (12) qui permet de détecter des champs de réaction (B2) générés par des particules magnétisées (2) en réaction aux champs d'excitation. Le dispositif de l'invention comprend également un compensateur (15) pour la génération d'un champ de compensation magnétique (B3) qui annule de manière adaptative des composantes spectrales prédéterminées de tous les champs magnétiques (B2, B3) qui s'étendent dans la direction de détection de l'élément de détection magnétique (12). Des mesures du capteur GMR (12) sont ainsi rendues résistantes à des variations de gain du capteur.
Latest bibliographic data on file with the International Bureau