GB1216071A - An absorber having high frequency electro-magnetic wave absorbing properties - Google Patents

An absorber having high frequency electro-magnetic wave absorbing properties

Info

Publication number
GB1216071A
GB1216071A GB3410662A GB3410662A GB1216071A GB 1216071 A GB1216071 A GB 1216071A GB 3410662 A GB3410662 A GB 3410662A GB 3410662 A GB3410662 A GB 3410662A GB 1216071 A GB1216071 A GB 1216071A
Authority
GB
United Kingdom
Prior art keywords
balls
absorber
sept
high frequency
magnetic
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.)
Expired
Application number
GB3410662A
Inventor
Ludwig Wesch
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
Application filed by Individual filed Critical Individual
Publication of GB1216071A publication Critical patent/GB1216071A/en
Expired 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
    • H01Q17/004—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

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

Abstract

1,216,071. Radio absorbers. L. WESCH. 5 Sept., 1962 [5 Sept., l961], No. 34106/62. Heading H4A. An absorber for a high-frequency electromagnetic wave is formed of balls, each of which has an electrically non-conducting core covered with a binder layer containing a filler having suitable electrical and/or magnetic properties. An outer layer is formed of insulating lacquer. The core may be formed of synthetic plastic or rubber, carbonyl iron or soft magnetic ferrites providing the magnetic characteristics while high conductivity is produced by graphite and carbon black. The balls are mounted in chambers, e.g. tubes or double walled plates, provided with honey-comb partitions. The balls may be progressively graded, in respect of their electrical and magnetic characteristics, in the direction of the incident radiation and may be given other than spherical shapes. In addition their sizes may be chosen so as to induce diffraction and dispersion of specific wavelengths.
GB3410662A 1961-09-05 1962-09-05 An absorber having high frequency electro-magnetic wave absorbing properties Expired GB1216071A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE21624A DE977812C (en) 1961-09-05 1961-09-05 Electromagnetic wave absorber

Publications (1)

Publication Number Publication Date
GB1216071A true GB1216071A (en) 1970-12-16

Family

ID=7070594

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3410662A Expired GB1216071A (en) 1961-09-05 1962-09-05 An absorber having high frequency electro-magnetic wave absorbing properties

Country Status (5)

Country Link
DE (1) DE977812C (en)
DK (1) DK387662A (en)
FR (1) FR1604954A (en)
GB (1) GB1216071A (en)
NL (2) NL133030C (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2240882A (en) * 1989-12-06 1991-08-14 Messerschmitt Boelkow Blohm Electromagnetic radiation absorbent material
EP0479438A2 (en) * 1990-10-02 1992-04-08 Minnesota Mining And Manufacturing Company Electromagnetic radiation absorbing material employing doubly layered particles
FR2678132A1 (en) * 1991-06-21 1992-12-24 Commissariat Energie Atomique METHOD FOR MANUFACTURING AN ELECTROMAGNETIC RADIATION ABSORBING SCREEN.
US5389434A (en) * 1990-10-02 1995-02-14 Minnesota Mining And Manufacturing Company Electromagnetic radiation absorbing material employing doubly layered particles
GB2325568A (en) * 1997-03-27 1998-11-25 Ams Polymers Radiation absorbent fluid
GB2394361A (en) * 1988-10-21 2004-04-21 Marconi Electronic Devices Energy absorbing compositions
CN111534279A (en) * 2020-05-13 2020-08-14 中国电子科技集团公司第三十三研究所 Preparation method of V-waveband wave-absorbing powder

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4142480A1 (en) * 1991-12-20 1993-07-01 Kerasorb Keramik Gmbh Absorber element used to absorb electro-magnetic waves - comprises base made of electrically insulating material contg. finely divided dielectric and/or magnetic material
DE102007035560A1 (en) * 2007-07-28 2009-01-29 Glatt Systemtechnik Gmbh Process for producing an absorber for microwaves and absorbers produced therefrom

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1021437B (en) * 1956-07-07 1957-12-27 Christian Oelting Fa Radar protection, wave-absorbing building board or building block

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2394361A (en) * 1988-10-21 2004-04-21 Marconi Electronic Devices Energy absorbing compositions
GB2394361B (en) * 1988-10-21 2004-09-15 Marconi Electronic Devices Energy absorbing compositions
GB2240882A (en) * 1989-12-06 1991-08-14 Messerschmitt Boelkow Blohm Electromagnetic radiation absorbent material
EP0479438A2 (en) * 1990-10-02 1992-04-08 Minnesota Mining And Manufacturing Company Electromagnetic radiation absorbing material employing doubly layered particles
US5389434A (en) * 1990-10-02 1995-02-14 Minnesota Mining And Manufacturing Company Electromagnetic radiation absorbing material employing doubly layered particles
EP0479438B1 (en) * 1990-10-02 1997-04-02 Minnesota Mining And Manufacturing Company Electromagnetic radiation absorbing material employing doubly layered particles
FR2678132A1 (en) * 1991-06-21 1992-12-24 Commissariat Energie Atomique METHOD FOR MANUFACTURING AN ELECTROMAGNETIC RADIATION ABSORBING SCREEN.
WO1993000786A1 (en) * 1991-06-21 1993-01-07 Commissariat Energie Atomique Method for fabricating a screen absorbing electromagnetic radiation
GB2325568A (en) * 1997-03-27 1998-11-25 Ams Polymers Radiation absorbent fluid
CN111534279A (en) * 2020-05-13 2020-08-14 中国电子科技集团公司第三十三研究所 Preparation method of V-waveband wave-absorbing powder
CN111534279B (en) * 2020-05-13 2022-11-29 中国电子科技集团公司第三十三研究所 Preparation method of V-waveband wave-absorbing powder

Also Published As

Publication number Publication date
NL282827A (en)
NL133030C (en) 1970-10-26
DE977812C (en) 1970-11-19
FR1604954A (en) 1972-06-26
DK387662A (en) 1982-04-27

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PLNP Patent lapsed through nonpayment of renewal fees