EP0828313A3 - Electromagnetic-wave absorber - Google Patents

Electromagnetic-wave absorber Download PDF

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Publication number
EP0828313A3
EP0828313A3 EP96308050A EP96308050A EP0828313A3 EP 0828313 A3 EP0828313 A3 EP 0828313A3 EP 96308050 A EP96308050 A EP 96308050A EP 96308050 A EP96308050 A EP 96308050A EP 0828313 A3 EP0828313 A3 EP 0828313A3
Authority
EP
European Patent Office
Prior art keywords
electromagnetic
ferrite sheet
wave absorber
wave
ferrite
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Withdrawn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
EP96308050A
Other languages
German (de)
French (fr)
Other versions
EP0828313A2 (en
Inventor
Kenichi Noda
Takashi Sakurai
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.)
TEN KK
Original Assignee
TEN KK
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 JP28339596A external-priority patent/JPH09219596A/en
Application filed by TEN KK filed Critical TEN KK
Publication of EP0828313A2 publication Critical patent/EP0828313A2/en
Publication of EP0828313A3 publication Critical patent/EP0828313A3/en
Withdrawn legal-status Critical Current

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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

Landscapes

  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

An electromagnetic-wave absorber (1) which can efficiently absorb the electromagnetic wave over broad band, with a reduced thickness and weight, which is superior in workability for attachment comprising a first ferrite sheet (3) of the predetermined thickness attached with a metal plate (15) for reflecting electromagnetic-wave on the back thereof, a second ferrite sheet (5) which has the thickness thinner than that of said first ferrite sheet (3) and is located in the front of said first ferrite sheet (3) and a dielectric means (7) which has the predetermined thickness and is located between said first and second ferrite sheets (3,5).
EP96308050A 1996-10-05 1996-11-06 Electromagnetic-wave absorber Withdrawn EP0828313A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP283395/96 1996-09-05
JP28339596A JPH09219596A (en) 1995-11-10 1996-10-05 Electromagnetic absorber

Publications (2)

Publication Number Publication Date
EP0828313A2 EP0828313A2 (en) 1998-03-11
EP0828313A3 true EP0828313A3 (en) 1998-10-07

Family

ID=17664971

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96308050A Withdrawn EP0828313A3 (en) 1996-10-05 1996-11-06 Electromagnetic-wave absorber

Country Status (1)

Country Link
EP (1) EP0828313A3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010055850B4 (en) 2010-12-22 2018-07-26 Deutsche Telekom Ag Absorber for electromagnetic waves

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3737903A (en) * 1970-07-06 1973-06-05 K Suetake Extremely thin, wave absorptive wall
EP0243161A2 (en) * 1986-04-22 1987-10-28 The Yokohama Rubber Co., Ltd. Microwave-absorptive composite
FR2653940A1 (en) * 1989-10-23 1991-05-03 Commissariat Energie Atomique Layer having magnetic or dielectric anisotropy and its method of manufacture
US5296859A (en) * 1991-05-31 1994-03-22 Yoshiyuki Naito Broadband wave absorption apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3737903A (en) * 1970-07-06 1973-06-05 K Suetake Extremely thin, wave absorptive wall
EP0243161A2 (en) * 1986-04-22 1987-10-28 The Yokohama Rubber Co., Ltd. Microwave-absorptive composite
FR2653940A1 (en) * 1989-10-23 1991-05-03 Commissariat Energie Atomique Layer having magnetic or dielectric anisotropy and its method of manufacture
US5296859A (en) * 1991-05-31 1994-03-22 Yoshiyuki Naito Broadband wave absorption apparatus

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
YOSHIYUKI NAITO ET AL: "DESIGN OF SUPER WIDEBAND ELECTROMAGNETIC WAVE ABSORBER AND ITS CHARACTERISTICS", ELECTRONICS & COMMUNICATIONS IN JAPAN, PART II - ELECTRONICS, vol. 78, no. 2, 1 February 1995 (1995-02-01), pages 1 - 8, XP000526342 *
YOSHIYUKI NAITO ET AL: "WIDENING THE BANDWIDTH OF FERRITE ELECTROMAGNETIC WAVE ABSORBERS BYATTACHING RUBBER FERRITE", ELECTRONICS & COMMUNICATIONS IN JAPAN, PART I - COMMUNICATIONS, vol. 77, no. 6, 1 June 1994 (1994-06-01), pages 76 - 86, XP000476172 *

Also Published As

Publication number Publication date
EP0828313A2 (en) 1998-03-11

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