BE488912A - - Google Patents
Info
- Publication number
- BE488912A BE488912A BE488912DA BE488912A BE 488912 A BE488912 A BE 488912A BE 488912D A BE488912D A BE 488912DA BE 488912 A BE488912 A BE 488912A
- 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
- H01Q19/13—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 the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination
- H01Q19/134—Rear-feeds; Splash plate feeds
- H01Q19/136—Rear-feeds; Splash plate feeds cross-polarised
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US25897A US2552146A (en) | 1948-05-08 | 1948-05-08 | Duplex directive antenna system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE488912A true BE488912A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Family
ID=21828653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE488912D BE488912A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1948-05-08 |
Country Status (3)
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE951733C (de) * | 1953-01-13 | 1956-10-31 | Telefunken Gmbh | Einrichtung zum Anschluss einer koaxialen Hochfrequenzleitung an einen Verbraucher oder Generator mit symmetrischem Eingang |
| US2954556A (en) * | 1956-10-10 | 1960-09-27 | Andrew Corp | Cross polarized dual feed |
| US5748156A (en) * | 1994-02-28 | 1998-05-05 | Chaparral Communications | High-performance antenna structure |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1927393A (en) * | 1931-07-10 | 1933-09-19 | Int Communications Lab Inc | Transmission system for ultrashort waves |
| US2251530A (en) * | 1940-03-19 | 1941-08-05 | Rca Corp | Support for high frequency concentric conductors |
| BE469469A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1945-06-05 |
-
0
- BE BE488912D patent/BE488912A/xx unknown
-
1948
- 1948-05-08 US US25897A patent/US2552146A/en not_active Expired - Lifetime
-
1949
- 1949-05-06 FR FR985757D patent/FR985757A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR985757A (fr) | 1951-07-23 |
| US2552146A (en) | 1951-05-08 |