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BR0015967A - Microwave absorbing structure - Google Patents

Microwave absorbing structure

Info

Publication number
BR0015967A
BR0015967A BR0015967-0A BR0015967A BR0015967A BR 0015967 A BR0015967 A BR 0015967A BR 0015967 A BR0015967 A BR 0015967A BR 0015967 A BR0015967 A BR 0015967A
Authority
BR
Brazil
Prior art keywords
absorbing structure
microwave absorbing
particles
ferri
exceeding
Prior art date
Application number
BR0015967-0A
Other languages
Portuguese (pt)
Inventor
Eric Mayes
Original Assignee
Nanomagnetics 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 Nanomagnetics Ltd filed Critical Nanomagnetics Ltd
Publication of BR0015967A publication Critical patent/BR0015967A/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
    • H01Q17/008—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems with a particular shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/0036—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties showing low dimensional magnetism, i.e. spin rearrangements due to a restriction of dimensions, e.g. showing giant magnetoresistivity
    • H01F1/0045—Zero dimensional, e.g. nanoparticles, soft nanoparticles for medical/biological use
    • H01F1/0063—Zero dimensional, e.g. nanoparticles, soft nanoparticles for medical/biological use in a non-magnetic matrix, e.g. granular solids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
    • H01Q17/004—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems using non-directional dissipative particles, e.g. ferrite powders

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Chemical & Material Sciences (AREA)
  • Nanotechnology (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Hard Magnetic Materials (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Aerials With Secondary Devices (AREA)
  • Compounds Of Iron (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Powder Metallurgy (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

"ESTRUTURA ABSORVEDORA DE MICROONDAS". é descrita uma estrutura absorvedora de microondas que compreende uma matriz não-condutora dentro da qual estão embutidas uma pluralidade de partículas de ferro- ou ferri-magnéticas espacialmente separadas, cada uma dessas partículas tendo uma dimensão maior não superior a 100 nm, as referidas partículas tendo sido preparadas por um processo que inclui uma etapa em que as partículas são formadas dentro de um invólucro macromolecular orgânico."MICROWAVE ABSORBING STRUCTURE". a microwave absorbing structure is described which comprises a non-conducting matrix within which a plurality of spatially separated iron- or ferri-magnetic particles are embedded, each of these particles having a larger dimension not exceeding 100 nm, said particles having been prepared by a process that includes a step in which the particles are formed within an organic macromolecular shell.

BR0015967-0A 1999-12-03 2000-11-27 Microwave absorbing structure BR0015967A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9928741.9A GB9928741D0 (en) 1999-12-03 1999-12-03 Microwave absorbing structure
PCT/GB2000/004505 WO2001041255A1 (en) 1999-12-03 2000-11-27 Microwave absorbing structure

Publications (1)

Publication Number Publication Date
BR0015967A true BR0015967A (en) 2002-08-06

Family

ID=10865747

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0015967-0A BR0015967A (en) 1999-12-03 2000-11-27 Microwave absorbing structure

Country Status (10)

Country Link
EP (1) EP1258055A1 (en)
JP (1) JP2003516623A (en)
KR (1) KR20020070986A (en)
CN (1) CN1402894A (en)
AU (1) AU1714201A (en)
BR (1) BR0015967A (en)
CA (1) CA2392379A1 (en)
GB (1) GB9928741D0 (en)
MX (1) MXPA02005451A (en)
WO (1) WO2001041255A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110947950B (en) * 2019-11-05 2021-08-24 中国船舶重工集团公司第七二五研究所 A kind of preparation method of graphene-modified FeCo absorbent

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5574961A (en) * 1985-01-16 1996-11-12 The United States Of America As Represented By The Secretary Of The Navy Phase-separated material (U)
JP3812977B2 (en) * 1996-09-30 2006-08-23 Ｎｅｃトーキン株式会社 Electromagnetic interference suppressor
GB2319253A (en) * 1996-11-16 1998-05-20 Eric Leigh Mayes Composition, for use in a device, comprising a magnetic layer of domain-separated magnetic particles

Also Published As

Publication number Publication date
MXPA02005451A (en) 2003-09-22
CN1402894A (en) 2003-03-12
KR20020070986A (en) 2002-09-11
WO2001041255A1 (en) 2001-06-07
JP2003516623A (en) 2003-05-13
GB9928741D0 (en) 2000-02-02
AU1714201A (en) 2001-06-12
CA2392379A1 (en) 2001-06-07
EP1258055A1 (en) 2002-11-20

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Legal Events

Date Code Title Description
B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B11Y Definitive dismissal acc. article 33 of ipl - extension of time limit for request of examination expired