DE69108577T2 - Breitbandiger Wellenabsorber. - Google Patents
Breitbandiger Wellenabsorber.Info
- Publication number
- DE69108577T2 DE69108577T2 DE1991608577 DE69108577T DE69108577T2 DE 69108577 T2 DE69108577 T2 DE 69108577T2 DE 1991608577 DE1991608577 DE 1991608577 DE 69108577 T DE69108577 T DE 69108577T DE 69108577 T2 DE69108577 T2 DE 69108577T2
- Authority
- DE
- Germany
- Prior art keywords
- plates
- ferrite
- dimension
- absorbing device
- wave
- 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 - Fee Related
Links
- 239000006096 absorbing agent Substances 0.000 title claims description 26
- 229910000859 α-Fe Inorganic materials 0.000 claims description 57
- 238000010521 absorption reaction Methods 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 11
- 239000000696 magnetic material Substances 0.000 claims description 10
- 230000035699 permeability Effects 0.000 claims description 6
- 229910003962 NiZn Inorganic materials 0.000 claims description 2
- 239000004020 conductor Substances 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims description 2
- 239000002356 single layer Substances 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 229910017706 MgZn Inorganic materials 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
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
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Aerials With Secondary Devices (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1579890 | 1990-01-25 | ||
| JP2023818A JPH03228398A (ja) | 1990-02-02 | 1990-02-02 | フェライト電波吸収体 |
| JP2150690A JPH077886B2 (ja) | 1990-01-25 | 1990-06-08 | ブロック形磁性体を用いた電波吸収体 |
| JP2162403A JP2509369B2 (ja) | 1990-06-20 | 1990-06-20 | 広帯域電波吸収装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE69108577D1 DE69108577D1 (de) | 1995-05-11 |
| DE69108577T2 true DE69108577T2 (de) | 1996-01-11 |
Family
ID=27456451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1991608577 Expired - Fee Related DE69108577T2 (de) | 1990-01-25 | 1991-01-23 | Breitbandiger Wellenabsorber. |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0439337B1 (ko) |
| KR (1) | KR0130755B1 (ko) |
| DE (1) | DE69108577T2 (ko) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9412957D0 (en) * | 1994-06-28 | 1994-09-28 | Marconi Gec Ltd | Energy absorbing arrangements |
| JP2681450B2 (ja) * | 1994-07-25 | 1997-11-26 | 道晴 高橋 | 広帯域電波吸収体 |
| JPH08204379A (ja) * | 1995-01-24 | 1996-08-09 | Mitsubishi Cable Ind Ltd | 電波吸収体 |
| 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 (zh) * | 2005-03-22 | 2006-09-27 | 株式会社东芝 | 天线装置及用于制造天线装置的方法 |
| USRE48211E1 (en) | 2007-07-09 | 2020-09-15 | Clearwater Holdings, Ltd. | Electromagnetic machine with independent removable coils, modular parts and self-sustained passive magnetic bearing |
| KR101944959B1 (ko) * | 2017-10-12 | 2019-02-01 | 국방과학연구소 | 전파흡수체를 이용하여 제작된 스텔스 구조물 |
| CN107809006A (zh) * | 2017-10-22 | 2018-03-16 | 南京理工大学 | 基于透明导电薄膜的透明超宽带微波吸波器 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE540736A (ko) * | 1953-03-28 | |||
| GB1170420A (en) * | 1966-12-30 | 1969-11-12 | Eltro Gmbh | Improvements in or relating to a Spatial Absorber for Electromagnetic Waves |
| US4118704A (en) * | 1976-04-07 | 1978-10-03 | Tdk Electronics Co., Ltd. | Electromagnetic wave-absorbing wall |
-
1991
- 1991-01-23 KR KR1019910001084A patent/KR0130755B1/ko not_active IP Right Cessation
- 1991-01-23 EP EP91300505A patent/EP0439337B1/en not_active Expired - Lifetime
- 1991-01-23 DE DE1991608577 patent/DE69108577T2/de not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR0130755B1 (ko) | 1998-04-14 |
| EP0439337A2 (en) | 1991-07-31 |
| DE69108577D1 (de) | 1995-05-11 |
| EP0439337A3 (en) | 1991-11-06 |
| EP0439337B1 (en) | 1995-04-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8364 | No opposition during term of opposition | ||
| 8327 | Change in the person/name/address of the patent owner |
Owner name: WIEDEMANN, CARL, 25813 HUSUM, DE |
|
| 8381 | Inventor (new situation) |
Inventor name: NAITO, YOSHIYUKI, YAMATO, KANAGAWA, JP Inventor name: TAKASHI, MICHIHARU, YACHIYO, CHIBA, JP |
|
| 8339 | Ceased/non-payment of the annual fee |