JPS6467997A - Radio wave absorber containing ferrite - Google Patents
Radio wave absorber containing ferriteInfo
- Publication number
- JPS6467997A JPS6467997A JP22469387A JP22469387A JPS6467997A JP S6467997 A JPS6467997 A JP S6467997A JP 22469387 A JP22469387 A JP 22469387A JP 22469387 A JP22469387 A JP 22469387A JP S6467997 A JPS6467997 A JP S6467997A
- Authority
- JP
- Japan
- Prior art keywords
- carbon
- layer
- carbon fiber
- bead
- powder
- 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
Links
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
PURPOSE:To obtain a composite panel which exhibits excellent absorbing effect in frequencies of wide range by laminating a layer containing carbon fiber or carbon bead in sand and cement mixture, and a layer containing ferrite powder. CONSTITUTION:In a 2-layer concrete panel, carbon fiber and carbon bead are contained in a first layer on which a metal plate is bonded on its rear face, and ferrite powder is contained in a second layer. The ferrite powder may be of powder normally sold in a market. The carbon fiber may be of normal carbon fiber, and may employ that having 5-30mum of diameter and 0.3-15mm of length. The bead employ lumped carbon formed generally by adding binder to spherical carbon particles or powder carbon having 50-1500mum of particle size and lumping it in particle size of 50-1500mum. This radio wave absorber is effective for radio waves having wavelengths of wide range, and particularly effective for radio waves for television waves, i.e., VHF, UHF bands.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62224693A JPH0834354B2 (en) | 1987-09-08 | 1987-09-08 | Radio wave absorber containing ferrite |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62224693A JPH0834354B2 (en) | 1987-09-08 | 1987-09-08 | Radio wave absorber containing ferrite |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6467997A true JPS6467997A (en) | 1989-03-14 |
JPH0834354B2 JPH0834354B2 (en) | 1996-03-29 |
Family
ID=16817758
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62224693A Expired - Lifetime JPH0834354B2 (en) | 1987-09-08 | 1987-09-08 | Radio wave absorber containing ferrite |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0834354B2 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03203396A (en) * | 1989-12-29 | 1991-09-05 | Nippon Steel Corp | Wave absorbing body for tv frequency band |
JPH03203397A (en) * | 1989-12-29 | 1991-09-05 | Nippon Steel Corp | Wave absorbing body for tv frequency band |
JPH0463499A (en) * | 1989-12-29 | 1992-02-28 | Nippon Steel Corp | Radio wave absorber for tv frequency band |
US5095616A (en) * | 1990-10-26 | 1992-03-17 | Tektronix, Inc. | Grounding method for use in high frequency electrical circuitry |
JPH04163999A (en) * | 1990-10-29 | 1992-06-09 | Tdk Corp | Radio wave absorber |
JPH04167602A (en) * | 1990-10-29 | 1992-06-15 | Tdk Corp | Wave absorber |
KR100730597B1 (en) * | 2005-02-23 | 2007-06-20 | 주식회사 인트켐 | Ceramic Panel for Building Having Electromagnetic Wave in Broad Frequency Range and Manufacturing Method Thereof |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5267945A (en) * | 1975-12-04 | 1977-06-06 | Tdk Corp | Electric wave absorbing wall |
JPS6242498A (en) * | 1985-08-19 | 1987-02-24 | 日本電気株式会社 | Radio wave absorbing body |
JPS6245100A (en) * | 1985-08-21 | 1987-02-27 | 日本電気株式会社 | Radio wave absorbing body |
-
1987
- 1987-09-08 JP JP62224693A patent/JPH0834354B2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5267945A (en) * | 1975-12-04 | 1977-06-06 | Tdk Corp | Electric wave absorbing wall |
JPS6242498A (en) * | 1985-08-19 | 1987-02-24 | 日本電気株式会社 | Radio wave absorbing body |
JPS6245100A (en) * | 1985-08-21 | 1987-02-27 | 日本電気株式会社 | Radio wave absorbing body |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03203396A (en) * | 1989-12-29 | 1991-09-05 | Nippon Steel Corp | Wave absorbing body for tv frequency band |
JPH03203397A (en) * | 1989-12-29 | 1991-09-05 | Nippon Steel Corp | Wave absorbing body for tv frequency band |
JPH0463499A (en) * | 1989-12-29 | 1992-02-28 | Nippon Steel Corp | Radio wave absorber for tv frequency band |
US5095616A (en) * | 1990-10-26 | 1992-03-17 | Tektronix, Inc. | Grounding method for use in high frequency electrical circuitry |
JPH04163999A (en) * | 1990-10-29 | 1992-06-09 | Tdk Corp | Radio wave absorber |
JPH04167602A (en) * | 1990-10-29 | 1992-06-15 | Tdk Corp | Wave absorber |
KR100730597B1 (en) * | 2005-02-23 | 2007-06-20 | 주식회사 인트켐 | Ceramic Panel for Building Having Electromagnetic Wave in Broad Frequency Range and Manufacturing Method Thereof |
Also Published As
Publication number | Publication date |
---|---|
JPH0834354B2 (en) | 1996-03-29 |
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