BE561081A - - Google Patents
Info
- Publication number
- BE561081A BE561081A BE561081DA BE561081A BE 561081 A BE561081 A BE 561081A BE 561081D A BE561081D A BE 561081DA BE 561081 A BE561081 A BE 561081A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
-
- 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
- H01Q3/12—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems
- H01Q3/14—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying the relative position of primary active element and a refracting or diffracting device
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US612913A US2939141A (en) | 1956-09-25 | 1956-09-25 | Omnirange beacon antennas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE561081A true BE561081A (de) |
Family
ID=24455112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE561081D BE561081A (de) | 1956-09-25 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2939141A (de) |
| BE (1) | BE561081A (de) |
| CH (1) | CH358842A (de) |
| DE (1) | DE1070247B (de) |
| GB (1) | GB825993A (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3173142A (en) * | 1959-04-29 | 1965-03-09 | Ite Circuit Breaker Ltd | Rotating beacon antenna with strip line modulators |
| US3246332A (en) * | 1960-04-29 | 1966-04-12 | Sylvania Electric Prod | Microscan antenna with electrically adjusted ferrite lens |
| US3116485A (en) * | 1960-06-27 | 1963-12-31 | Ite Circuit Breaker Ltd | Omnidirectional horn radiator for beacon antenna |
| US4861124A (en) * | 1987-05-13 | 1989-08-29 | Sanders Associates, Inc. | Dual-section spatial modulation transmitter |
| US4947181A (en) * | 1988-12-19 | 1990-08-07 | Raytheon Company | Asymmetrical biconical horn antenna |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2461005A (en) * | 1940-04-05 | 1949-02-08 | Bell Telephone Labor Inc | Ultra high frequency transmission |
| US2369808A (en) * | 1940-06-08 | 1945-02-20 | American Telephone & Telegraph | Short-wave radio transmission |
| US2549721A (en) * | 1944-05-16 | 1951-04-17 | Henry A Straus | Antenna system of variable directivity and high resolution |
| US2413085A (en) * | 1945-01-29 | 1946-12-24 | Philco Corp | Antenna system |
| US2567220A (en) * | 1947-10-29 | 1951-09-11 | Sperry Corp | Scalloped limacon pattern antenna |
| US2599896A (en) * | 1948-03-12 | 1952-06-10 | Collins Radio Co | Dielectrically wedged biconical antenna |
| US2677766A (en) * | 1949-05-18 | 1954-05-04 | Sperry Corp | Scalloped limacon pattern antenna |
-
0
- BE BE561081D patent/BE561081A/xx unknown
- DE DENDAT1070247D patent/DE1070247B/de active Pending
-
1956
- 1956-09-25 US US612913A patent/US2939141A/en not_active Expired - Lifetime
-
1957
- 1957-09-20 GB GB29630/57A patent/GB825993A/en not_active Expired
- 1957-09-25 CH CH358842D patent/CH358842A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US2939141A (en) | 1960-05-31 |
| GB825993A (en) | 1959-12-23 |
| DE1070247B (de) | |
| CH358842A (de) | 1961-12-15 |