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1. WO2000041270 - STRUCTURE WITH MAGNETIC PROPERTIES

Publication Number WO/2000/041270
Publication Date 13.07.2000
International Application No. PCT/GB1999/004419
International Filing Date 23.12.1999
IPC
H01Q 15/00 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
15Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
H01Q 17/00 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
17Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
CPC
H01Q 15/0086
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
15Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
0006Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
0086said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials
H01Q 17/00
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
17Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
Y10T 428/12542
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
428Stock material or miscellaneous articles
12All metal or with adjacent metals
12493Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
12535with additional, spatially distinct nonmetal component
12542More than one such component
Y10T 428/12569
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
428Stock material or miscellaneous articles
12All metal or with adjacent metals
12493Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
12535with additional, spatially distinct nonmetal component
12556Organic component
12569Synthetic resin
Y10T 428/12736
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
428Stock material or miscellaneous articles
12All metal or with adjacent metals
12493Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
12736Al-base component
Applicants
  • MARCONI CASWELL LIMITED [GB/GB]; One Bruton Street London W1X 8AQ, GB (AllExceptUS)
  • HOLDEN, Anthony, James [GB/GB]; GB (UsOnly)
  • ROBBINS, David, James [GB/GB]; GB (UsOnly)
  • STEWART, William, James [GB/GB]; GB (UsOnly)
  • WILTSHIRE, Michael, Charles, Keogh [GB/GB]; GB (UsOnly)
  • PENDRY, John, Brian [GB/GB]; GB (UsOnly)
Inventors
  • HOLDEN, Anthony, James; GB
  • ROBBINS, David, James; GB
  • STEWART, William, James; GB
  • WILTSHIRE, Michael, Charles, Keogh; GB
  • PENDRY, John, Brian; GB
Agents
  • HOSTE, Colin, Francis; Marconi Intellectual Property Waterhouse Lane Chelmsford Essex CM1 2QX, GB
Priority Data
9900034.104.01.1999GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) STRUCTURE WITH MAGNETIC PROPERTIES
(FR) STRUCTURE DOTEE DE PROPRIETES MAGNETIQUES
Abstract
(EN)
A structure (2) which exhibits magnetic properties when it receives electromagnetic radiation (20) is formed from an array of capacitive elements (4) each of which is smaller, and preferably much smaller, than the wavelength of the radiation. Each capacitive element (4) has a low resistance conducting path associated with it and is such that a magnetic component of the received electromagnetic radiation (20) induces an electrical current to flow around said path and through the associated element. The creation of internal magnetic fields generated by the flow of the induced electrical current gives rise to the structure's magnetic properties.
(FR)
L'invention porte sur une structure (2) présentant des propriétés magnétiques lorsque soumise à un rayonnement électromagnétique (20) et constituée d'un réseau d'éléments capacitifs (4) dont chacun est plus petit et de préférence nettement plus petit que la longueur d'onde du rayonnement. Chacun de ces éléments, qui présente un circuit conducteur de faible résistance, est conçu pour que l'une des composantes magnétiques du rayonnement reçu (20) amène un courant électrique à contourner ledit circuit et à traverser l'élément associé. La création des champs magnétiques intérieurs créés par le courant électrique induit est à l'origine des propriétés magnétiques de la structure.
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