ES173332A1 - Mejoras en radiofaros - Google Patents
Mejoras en radiofarosInfo
- Publication number
- ES173332A1 ES173332A1 ES173332A ES173332A ES173332A1 ES 173332 A1 ES173332 A1 ES 173332A1 ES 173332 A ES173332 A ES 173332A ES 173332 A ES173332 A ES 173332A ES 173332 A1 ES173332 A1 ES 173332A1
- Authority
- ES
- Spain
- Prior art keywords
- headlights
- radio
- radio headlights
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Aerials With Secondary Devices (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US580674A US2577804A (en) | 1945-03-02 | 1945-03-02 | Radio antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES173332A1 true ES173332A1 (es) | 1946-06-01 |
Family
ID=41578941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES173332A Expired ES173332A1 (es) | 1945-03-02 | 1946-04-25 | Mejoras en radiofaros |
Country Status (5)
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1781046A (en) * | 1924-07-11 | 1930-11-11 | Bethenod Joseph | Antenna |
| US1746436A (en) * | 1924-07-25 | 1930-02-11 | Drahtlose Telegraphie Gmbh | Antenna |
| US1764441A (en) * | 1924-08-04 | 1930-06-17 | Hahnemann Walter | Arrangement for directional transmission and reception by means of electric waves |
| DE475293C (de) * | 1925-12-29 | 1929-04-25 | Hidetsugu Yagi | Einrichtung zum Richtsenden oder Richtempfangen |
| US1830176A (en) * | 1926-12-08 | 1931-11-03 | Drahtlose Telegraphie Gmbh | Short wave aerial |
| US1805591A (en) * | 1926-12-18 | 1931-05-19 | American Telephone & Telegraph | Signaling system |
| GB402834A (en) * | 1931-07-29 | 1933-12-14 | Fed Telegraph Co | Improvements in or relating to directional radio beam systems |
| US2081162A (en) * | 1935-04-30 | 1937-05-25 | Mackay Radio & Telegraph Co | Antenna |
| US2292342A (en) * | 1940-02-28 | 1942-08-04 | Bell Telephone Labor Inc | Reflecting system for antennas |
-
0
- BE BE469845D patent/BE469845A/xx unknown
-
1945
- 1945-03-02 US US580674A patent/US2577804A/en not_active Expired - Lifetime
-
1946
- 1946-03-01 FR FR923035D patent/FR923035A/fr not_active Expired
- 1946-03-01 GB GB6445/46A patent/GB619959A/en not_active Expired
- 1946-04-25 ES ES173332A patent/ES173332A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE469845A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | |
| GB619959A (en) | 1949-03-17 |
| US2577804A (en) | 1951-12-11 |
| FR923035A (fr) | 1947-06-25 |
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