BE473871A - - Google Patents
Info
- Publication number
- BE473871A BE473871A BE473871DA BE473871A BE 473871 A BE473871 A BE 473871A BE 473871D A BE473871D A BE 473871DA BE 473871 A BE473871 A BE 473871A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- 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
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- 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
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
- G01S3/04—Details
- G01S3/08—Means for reducing polarisation errors, e.g. by use of Adcock or spaced loop antenna systems
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2478463X | 1946-02-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE473871A true BE473871A (es) |
Family
ID=19874347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE473871D BE473871A (es) | 1946-02-19 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2478463A (es) |
| BE (1) | BE473871A (es) |
| FR (1) | FR959920A (es) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3156917A (en) * | 1960-02-22 | 1964-11-10 | Marelli Lenkurt S P A | Antenna reflector and feed with absorbers to reduce back radiation to feed |
| US3789404A (en) * | 1968-10-16 | 1974-01-29 | Univ Ohio State Res Found | Periodic surface for large scan angles |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE706417C (de) * | 1936-08-25 | 1941-05-26 | Lorenz Akt Ges C | Anordnung zur Vermeidung von Horizontalpolarisation |
| US2293839A (en) * | 1940-06-25 | 1942-08-25 | Rca Corp | Centimeter wave absorber |
| FR962499A (es) * | 1942-06-02 | 1950-06-10 | ||
| US2433369A (en) * | 1942-07-24 | 1947-12-30 | Standard Telephones Cables Ltd | Antenna system and method of using same |
| US2436578A (en) * | 1944-03-04 | 1948-02-24 | Ruskin | Means for altering the reflection of radar waves |
-
0
- FR FR959920D patent/FR959920A/fr not_active Expired
- BE BE473871D patent/BE473871A/xx unknown
-
1947
- 1947-07-28 US US764217A patent/US2478463A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR959920A (es) | 1950-04-07 |
| US2478463A (en) | 1949-08-09 |