BE468393A - - Google Patents
Info
- Publication number
- BE468393A BE468393A BE468393DA BE468393A BE 468393 A BE468393 A BE 468393A BE 468393D A BE468393D A BE 468393DA BE 468393 A BE468393 A BE 468393A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/20—Producing pencil beam by two cylindrical focusing devices with their focal lines orthogonally disposed
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US574334A US2705754A (en) | 1945-01-24 | 1945-01-24 | Directive antenna systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE468393A true BE468393A (fi) |
Family
ID=24295665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE468393D BE468393A (fi) | 1945-01-24 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2705754A (fi) |
| BE (1) | BE468393A (fi) |
| FR (1) | FR937949A (fi) |
| GB (1) | GB606927A (fi) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB976253A (en) * | 1962-04-04 | 1964-11-25 | Marconi Co Ltd | Improvements in or relating to aerial systems |
| JP2002339859A (ja) * | 2001-05-17 | 2002-11-27 | National Aerospace Laboratory Of Japan | 電磁波集束装置 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1299397A (en) * | 1917-05-12 | 1919-04-01 | Oliver Earle Conkin | Light-projection apparatus. |
| US1625946A (en) * | 1924-03-13 | 1927-04-26 | John H Laird | Head lamp |
| BE381315A (fi) * | 1930-07-21 | |||
| DE636809C (de) * | 1930-08-08 | 1936-10-17 | Rudolf Weyrich Dr | Vorrichtung zum Senden oder Empfangen elektromagnetischer Wellen mit in der Umgebungeiner Sende- oder Empfangsvorrichtung angeordneten Reflektoren |
| DE568015C (de) * | 1931-09-16 | 1933-01-12 | Telefunken Gmbh | Spiegelanordnung fuer ultrakurze elektromagnetische Wellen |
| US2206923A (en) * | 1934-09-12 | 1940-07-09 | American Telephone & Telegraph | Short wave radio system |
| US2283935A (en) * | 1938-04-29 | 1942-05-26 | Bell Telephone Labor Inc | Transmission, radiation, and reception of electromagnetic waves |
| US2272839A (en) * | 1938-11-23 | 1942-02-10 | Jr John Hays Hammond | Radiant energy signaling system |
| US2398095A (en) * | 1940-08-31 | 1946-04-09 | Rca Corp | Electromagnetic horn radiator |
| US2436408A (en) * | 1943-05-27 | 1948-02-24 | Sperry Corp | Radio wave reflecting transducer system |
| US2434253A (en) * | 1943-08-21 | 1948-01-13 | Bell Telephone Labor Inc | Directive centimetric antenna |
-
0
- BE BE468393D patent/BE468393A/xx unknown
-
1945
- 1945-01-24 US US574334A patent/US2705754A/en not_active Expired - Lifetime
-
1946
- 1946-01-02 GB GB2086/46A patent/GB606927A/en not_active Expired
- 1946-09-06 FR FR937949D patent/FR937949A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR937949A (fr) | 1948-08-31 |
| US2705754A (en) | 1955-04-05 |
| GB606927A (en) | 1948-08-23 |