BE469846A - - Google Patents
Info
- Publication number
- BE469846A BE469846A BE469846DA BE469846A BE 469846 A BE469846 A BE 469846A BE 469846D A BE469846D A BE 469846DA BE 469846 A BE469846 A BE 469846A
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/02—Refracting or diffracting devices, e.g. lens, prism
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US584596A US2524830A (en) | 1945-03-19 | 1945-03-19 | Beacon antenna system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE469846A true BE469846A (en) |
Family
ID=24338004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE469846D BE469846A (en) | 1945-03-19 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2524830A (en) |
| BE (1) | BE469846A (en) |
| CH (1) | CH273990A (en) |
| ES (1) | ES172871A1 (en) |
| FR (1) | FR923933A (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1764441A (en) * | 1924-08-04 | 1930-06-17 | Hahnemann Walter | Arrangement for directional transmission and reception by means of electric waves |
| FR704953A (en) * | 1930-01-24 | 1931-05-29 | Radio Ind | Wave projector |
| US2226687A (en) * | 1937-12-28 | 1940-12-31 | Mackay Radio & Telegraph Compa | Unidirectional v-type antenna system |
| US2204175A (en) * | 1939-01-19 | 1940-06-11 | Rca Corp | Antenna system |
| US2292342A (en) * | 1940-02-28 | 1942-08-04 | Bell Telephone Labor Inc | Reflecting system for antennas |
| US2282759A (en) * | 1940-08-03 | 1942-05-12 | Gavitt Mfg Company | Antenna loop |
-
0
- BE BE469846D patent/BE469846A/xx unknown
-
1945
- 1945-03-19 US US584596A patent/US2524830A/en not_active Expired - Lifetime
-
1946
- 1946-03-13 ES ES172871A patent/ES172871A1/en not_active Expired
- 1946-03-18 FR FR923933D patent/FR923933A/en not_active Expired
- 1946-03-19 CH CH273990D patent/CH273990A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ES172871A1 (en) | 1946-04-16 |
| FR923933A (en) | 1947-07-22 |
| CH273990A (en) | 1951-03-15 |
| US2524830A (en) | 1950-10-10 |