BE463671A - - Google Patents
Info
- Publication number
- BE463671A BE463671A BE463671DA BE463671A BE 463671 A BE463671 A BE 463671A BE 463671D A BE463671D A BE 463671DA BE 463671 A BE463671 A BE 463671A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
-
- 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
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/062—Two dimensional planar arrays using dipole aerials
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US436172A US2341558A (en) | 1942-03-25 | 1942-03-25 | Marker beacon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE463671A true BE463671A (en, 2012) |
Family
ID=23731405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE463671D BE463671A (en, 2012) | 1942-03-25 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2341558A (en, 2012) |
| BE (1) | BE463671A (en, 2012) |
| FR (1) | FR938164A (en, 2012) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2416246A (en) * | 1944-01-04 | 1947-02-18 | Hazeltine Research Inc | Antenna structure |
| US2477647A (en) * | 1945-01-29 | 1949-08-02 | Standard Telephones Cables Ltd | Antenna |
| US2622196A (en) * | 1949-01-13 | 1952-12-16 | Alford Andrew | Antenna |
| US3273155A (en) * | 1963-09-13 | 1966-09-13 | Litton Systems Inc | Fresnel zone lens antenna |
| US3680142A (en) * | 1969-10-06 | 1972-07-25 | Nasa | Circularly polarized antenna |
-
0
- BE BE463671D patent/BE463671A/xx unknown
-
1942
- 1942-03-25 US US436172A patent/US2341558A/en not_active Expired - Lifetime
-
1946
- 1946-02-06 FR FR938164D patent/FR938164A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2341558A (en) | 1944-02-15 |
| FR938164A (fr) | 1948-09-07 |