EP0439337A3 - Broad-band wave absorber - Google Patents

Broad-band wave absorber Download PDF

Info

Publication number
EP0439337A3
EP0439337A3 EP19910300505 EP91300505A EP0439337A3 EP 0439337 A3 EP0439337 A3 EP 0439337A3 EP 19910300505 EP19910300505 EP 19910300505 EP 91300505 A EP91300505 A EP 91300505A EP 0439337 A3 EP0439337 A3 EP 0439337A3
Authority
EP
European Patent Office
Prior art keywords
broad
wave absorber
band wave
band
absorber
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.)
Granted
Application number
EP19910300505
Other versions
EP0439337A2 (en
EP0439337B1 (en
Inventor
Yoshiyuki Naito
Michiharu Takahashi
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.)
Individual
Original Assignee
Individual
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
Priority claimed from JP2023818A external-priority patent/JPH03228398A/en
Priority claimed from JP2150690A external-priority patent/JPH077886B2/en
Priority claimed from JP2162403A external-priority patent/JP2509369B2/en
Application filed by Individual filed Critical Individual
Publication of EP0439337A2 publication Critical patent/EP0439337A2/en
Publication of EP0439337A3 publication Critical patent/EP0439337A3/en
Application granted granted Critical
Publication of EP0439337B1 publication Critical patent/EP0439337B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
EP91300505A 1990-01-25 1991-01-23 Broad-band wave absorber Expired - Lifetime EP0439337B1 (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP1579890 1990-01-25
JP15798/90 1990-01-25
JP23818/90 1990-02-02
JP2023818A JPH03228398A (en) 1990-02-02 1990-02-02 Ferrite radio wave absorber
JP150690/90 1990-06-08
JP2150690A JPH077886B2 (en) 1990-01-25 1990-06-08 Electromagnetic wave absorber using block type magnetic material
JP2162403A JP2509369B2 (en) 1990-06-20 1990-06-20 Broadband radio wave absorber
JP162403/90 1990-06-20

Publications (3)

Publication Number Publication Date
EP0439337A2 EP0439337A2 (en) 1991-07-31
EP0439337A3 true EP0439337A3 (en) 1991-11-06
EP0439337B1 EP0439337B1 (en) 1995-04-05

Family

ID=27456451

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91300505A Expired - Lifetime EP0439337B1 (en) 1990-01-25 1991-01-23 Broad-band wave absorber

Country Status (3)

Country Link
EP (1) EP0439337B1 (en)
KR (1) KR0130755B1 (en)
DE (1) DE69108577T2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9412957D0 (en) * 1994-06-28 1994-09-28 Marconi Gec Ltd Energy absorbing arrangements
JP2681450B2 (en) * 1994-07-25 1997-11-26 道晴 高橋 Broadband radio wave absorber
JPH08204379A (en) * 1995-01-24 1996-08-09 Mitsubishi Cable Ind Ltd Radio wave absorber
GB9900034D0 (en) * 1999-01-04 1999-02-24 Marconi Electronic Syst Ltd Structure with magnetic properties
GB2380860A (en) * 2001-10-08 2003-04-16 Marconi Caswell Ltd Structures with magnetic properties
CN1838345A (en) * 2005-03-22 2006-09-27 株式会社东芝 Antenna device and method for manufacturing antenna device
TWI446689B (en) 2007-07-09 2014-07-21 Clearwater Holdings Ltd Electromagnetic machine with independent removable coils, modular parts and self sustained passive magnetic bearing
KR101944959B1 (en) * 2017-10-12 2019-02-01 국방과학연구소 Stealth structure manufactured using electromagnetic wave absorber
CN107809006A (en) * 2017-10-22 2018-03-16 南京理工大学 Transparent ultra-wideband microwave wave absorbing device based on transparent conductive film

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB776158A (en) * 1953-03-28 1957-06-05 Werner Genest Ges Fur Isolieru Improvements in or relating to absorbers for radio waves
GB1170420A (en) * 1966-12-30 1969-11-12 Eltro Gmbh Improvements in or relating to a Spatial Absorber for Electromagnetic Waves

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4118704A (en) * 1976-04-07 1978-10-03 Tdk Electronics Co., Ltd. Electromagnetic wave-absorbing wall

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB776158A (en) * 1953-03-28 1957-06-05 Werner Genest Ges Fur Isolieru Improvements in or relating to absorbers for radio waves
GB1170420A (en) * 1966-12-30 1969-11-12 Eltro Gmbh Improvements in or relating to a Spatial Absorber for Electromagnetic Waves

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IEEE TRANSACTIONS ON BROADCASTING. vol. 25, no. 4, December 1979, NEW YORK US pages 143 - 146; TAKIZAWA: 'REDUCTION OF GHOST SIGNAL BY USE OF MAGNETIC ABSORBING MATERIAL ON WALLS ' *

Also Published As

Publication number Publication date
DE69108577T2 (en) 1996-01-11
EP0439337A2 (en) 1991-07-31
EP0439337B1 (en) 1995-04-05
DE69108577D1 (en) 1995-05-11
KR0130755B1 (en) 1998-04-14

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