BE474941A - - Google Patents
Info
- Publication number
- BE474941A BE474941A BE474941DA BE474941A BE 474941 A BE474941 A BE 474941A BE 474941D A BE474941D A BE 474941DA BE 474941 A BE474941 A BE 474941A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C7/00—Modulating electromagnetic waves
- H03C7/02—Modulating electromagnetic waves in transmission lines, waveguides, cavity resonators or radiation fields of antennas
-
- 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
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/44—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US417152A US2407250A (en) | 1941-10-30 | 1941-10-30 | Directive antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE474941A true BE474941A (en) |
Family
ID=23652789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE474941D BE474941A (en) | 1941-10-30 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2407250A (en) |
| BE (1) | BE474941A (en) |
| FR (1) | FR951025A (en) |
| GB (1) | GB592490A (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2597862A (en) * | 1945-05-03 | 1952-05-27 | John H Greig | Electronic lobing |
| US2539594A (en) * | 1948-07-17 | 1951-01-30 | Robert H Rines | System and method of communication |
| US2641702A (en) * | 1948-10-22 | 1953-06-09 | Int Standard Electric Corp | Control of wave length in wave guide and coaxial lines |
| US2688744A (en) * | 1948-11-12 | 1954-09-07 | Philco Corp | Means for controlling antenna characteristics in object locating systems of the reflection type |
| US3010105A (en) * | 1949-10-06 | 1961-11-21 | Westinghouse Electric Corp | Electrical lobing of antenna feed |
| US3127608A (en) * | 1956-08-06 | 1964-03-31 | Gen Electric | Object camouflage method and apparatus |
| US2988741A (en) * | 1957-01-30 | 1961-06-13 | Goodyear Aircraft Corp | Electronic scanning antenna |
| US2886811A (en) * | 1957-06-07 | 1959-05-12 | Jr Ernest Harrison | Electromagnetic beam scanning and reflection |
| US3375519A (en) * | 1960-05-19 | 1968-03-26 | Litton Ind Of Maryland Inc | Scanning reflector |
| US3153787A (en) * | 1961-04-10 | 1964-10-20 | Radiation Inc | Scanning antenna with power modulation |
| US3222601A (en) * | 1962-07-10 | 1965-12-07 | Martin Marietta Corp | Antenna beam scanner |
| US3238531A (en) * | 1963-03-12 | 1966-03-01 | Thompson Ramo Wooldridge Inc | Electronically steerable narrow beam antenna system utilizing dipolar resonant plasma columns |
-
0
- BE BE474941D patent/BE474941A/xx unknown
-
1941
- 1941-10-30 US US417152A patent/US2407250A/en not_active Expired - Lifetime
-
1943
- 1943-11-26 GB GB19829/43A patent/GB592490A/en not_active Expired
-
1947
- 1947-08-05 FR FR951025D patent/FR951025A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2407250A (en) | 1946-09-10 |
| GB592490A (en) | 1947-09-19 |
| FR951025A (en) | 1949-10-13 |