GB969141A - Improvements in or relating to electromagnetic wave absorption systems - Google Patents
Improvements in or relating to electromagnetic wave absorption systemsInfo
- Publication number
- GB969141A GB969141A GB4875862A GB4875862A GB969141A GB 969141 A GB969141 A GB 969141A GB 4875862 A GB4875862 A GB 4875862A GB 4875862 A GB4875862 A GB 4875862A GB 969141 A GB969141 A GB 969141A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blocks
- wall
- strip
- dec
- increase
- 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
Links
- 238000010521 absorption reaction Methods 0.000 title 1
- 239000000463 material Substances 0.000 abstract 2
- 229920000742 Cotton Polymers 0.000 abstract 1
- 230000005670 electromagnetic radiation Effects 0.000 abstract 1
- 239000004744 fabric Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 230000035699 permeability Effects 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
- 239000002985 plastic film Substances 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 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
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
969,141. Absorbing radio waves. SIEMENS & HALSKE A.G. Dec. 28, 1962 [Dec. 28, 1961], No. 48758/62. Heading H4A. A wall which will absorb electromagnetic radiation comprises a plurality of solid or foamed plastic blocks 2 and a strip 1 of cotton cloth or plastic sheet each impregnated or coated with electrically attenuating resistive particles and interwoven between the blocks in a manner similar to that indicated by the darkened lines. The resistivity of the strip 1 may be arranged to vary across the width of the strip being greater away from the incident radiation. To increase the absorptive effect two or more walls may be disposed one behind the other the cross-section area of the blocks forming one wall being less than that of the blocks forming the wall in front thereof (Fig. 3, not shown), the dielectric constant of the block material may be arranged to increase across the depth of the wall, or the blocks may contain material having a magnetic permeability greater than that of air. Blocks of circular crosssection are also disclosed. Specification 969,142 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1961S0077335 DE1244254B (en) | 1961-12-28 | 1961-12-28 | Low reflection damping arrangement for electromagnetic waves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB969141A true GB969141A (en) | 1964-09-09 |
Family
ID=7506739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4875862A Expired GB969141A (en) | 1961-12-28 | 1962-12-28 | Improvements in or relating to electromagnetic wave absorption systems |
Country Status (5)
| Country | Link |
|---|---|
| CH (1) | CH406330A (en) |
| DE (1) | DE1244254B (en) |
| DK (1) | DK107238C (en) |
| GB (1) | GB969141A (en) |
| NL (1) | NL287224A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5095311A (en) * | 1987-11-28 | 1992-03-10 | Toppan Printing Co., Ltd. | Electromagnetic wave absorbing element |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1029433B (en) * | 1954-06-11 | 1958-05-08 | Siemens Ag | Low-reflection damping arrangement for electromagnetic or acoustic waves |
| DE1014610B (en) * | 1955-03-29 | 1957-08-29 | Julius & August Erbsloeh Komma | Radar reflector |
| DE1058581B (en) * | 1956-09-26 | 1959-06-04 | Siemens Ag | Material for electromagnetic absorbers |
-
0
- NL NL287224D patent/NL287224A/xx unknown
-
1961
- 1961-12-28 DE DE1961S0077335 patent/DE1244254B/en active Pending
-
1962
- 1962-11-08 CH CH1308162A patent/CH406330A/en unknown
- 1962-12-22 DK DK561362A patent/DK107238C/en active
- 1962-12-28 GB GB4875862A patent/GB969141A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5095311A (en) * | 1987-11-28 | 1992-03-10 | Toppan Printing Co., Ltd. | Electromagnetic wave absorbing element |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1244254B (en) | 1967-07-13 |
| DK107238C (en) | 1967-05-08 |
| NL287224A (en) | |
| CH406330A (en) | 1966-01-31 |
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