GB0406558D0 - Structures with magnetic properties - Google Patents

Structures with magnetic properties

Info

Publication number
GB0406558D0
GB0406558D0 GBGB0406558.7A GB0406558A GB0406558D0 GB 0406558 D0 GB0406558 D0 GB 0406558D0 GB 0406558 A GB0406558 A GB 0406558A GB 0406558 D0 GB0406558 D0 GB 0406558D0
Authority
GB
United Kingdom
Prior art keywords
roll
width
wound
sleeve
overhang
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GBGB0406558.7A
Other versions
GB2396969A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marconi UK Intellectual Property Ltd
Original Assignee
Marconi UK Intellectual Property Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Marconi UK Intellectual Property Ltd filed Critical Marconi UK Intellectual Property Ltd
Publication of GB0406558D0 publication Critical patent/GB0406558D0/en
Publication of GB2396969A publication Critical patent/GB2396969A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/0006Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
    • H01Q15/006Selective devices having photonic band gap materials or materials of which the material properties are frequency dependent, e.g. perforated substrates, high-impedance surfaces
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q17/00Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

A microstructured material consists of an array of Swiss roll resonant elements having capacitance and inductance such that the structure exhibits a predetermined magnetic permeability at r.f. frequencies, wherein at least one of the elongate means consisting for example of a roll of conducting material 3 wound interspersed with insulating material on a mandrel 4 is tuned to a desired frequency by applying a sleeve wound into a roll, to an end of the Swiss roll at a given overhang x, and of an appropriate width, which can be determined for example from reference measurements showing the width necessary to make a desired adjustment. The adjustment could also be made by selecting a suitable overhang for a given width of sleeve.
GB0406558A 2001-10-08 2002-09-27 Structures with magnetic properties Withdrawn GB2396969A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0124088A GB2380860A (en) 2001-10-08 2001-10-08 Structures with magnetic properties
PCT/GB2002/004376 WO2003032438A1 (en) 2001-10-08 2002-09-27 Structures with magnetic properties

Publications (2)

Publication Number Publication Date
GB0406558D0 true GB0406558D0 (en) 2004-04-28
GB2396969A GB2396969A (en) 2004-07-07

Family

ID=9923393

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0124088A Withdrawn GB2380860A (en) 2001-10-08 2001-10-08 Structures with magnetic properties
GB0406558A Withdrawn GB2396969A (en) 2001-10-08 2002-09-27 Structures with magnetic properties

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0124088A Withdrawn GB2380860A (en) 2001-10-08 2001-10-08 Structures with magnetic properties

Country Status (2)

Country Link
GB (2) GB2380860A (en)
WO (1) WO2003032438A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0130755B1 (en) * 1990-01-25 1998-04-14 요시유키 나이토 Broadband wave absorber
JP3030453B2 (en) * 1995-12-27 2000-04-10 道晴 高橋 Broadband radio wave absorber
GB9900034D0 (en) * 1999-01-04 1999-02-24 Marconi Electronic Syst Ltd Structure with magnetic properties
GB2360138A (en) * 2000-03-06 2001-09-12 Marconi Caswell Ltd Screens for RF magnetic flux

Also Published As

Publication number Publication date
GB2380860A (en) 2003-04-16
WO2003032438A1 (en) 2003-04-17
GB2396969A (en) 2004-07-07
GB0124088D0 (en) 2001-11-28

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)