FR1146901A - Improvements to radar devices - Google Patents
Improvements to radar devicesInfo
- Publication number
- FR1146901A FR1146901A FR1146901DA FR1146901A FR 1146901 A FR1146901 A FR 1146901A FR 1146901D A FR1146901D A FR 1146901DA FR 1146901 A FR1146901 A FR 1146901A
- Authority
- FR
- France
- Prior art keywords
- radar devices
- radar
- devices
- 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
- H01Q19/12—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 wherein the surfaces are concave
- H01Q19/13—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 wherein the surfaces are concave the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination
-
- 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
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/215—Frequency-selective devices, e.g. filters using ferromagnetic material
- H01P1/217—Frequency-selective devices, e.g. filters using ferromagnetic material the ferromagnetic material acting as a tuning element in resonators
-
- 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
- H01Q3/24—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 orientation by switching energy from one active radiating element to another, e.g. for beam switching
- H01Q3/245—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 orientation by switching energy from one active radiating element to another, e.g. for beam switching in the focal plane of a focussing device
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Radar Systems Or Details Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1146901T | 1956-03-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1146901A true FR1146901A (en) | 1957-11-18 |
Family
ID=9645632
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1146901D Expired FR1146901A (en) | 1956-03-16 | 1956-03-16 | Improvements to radar devices |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE555804A (en) |
FR (1) | FR1146901A (en) |
GB (1) | GB821171A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3067419A (en) * | 1959-01-08 | 1962-12-04 | Lab For Electronics Inc | Antenna beam scanning system |
FR2694452A1 (en) * | 1992-07-30 | 1994-02-04 | Alcatel Telspace | Adjustable narrow passband filter with quick response for microwave communications - has coupler of dimensions for evanescent mode with cylindrical polycrystalline ferrite resonator in adjustable magnetic field |
-
0
- BE BE555804D patent/BE555804A/xx unknown
-
1956
- 1956-03-16 FR FR1146901D patent/FR1146901A/en not_active Expired
-
1957
- 1957-03-15 GB GB8609/57A patent/GB821171A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3067419A (en) * | 1959-01-08 | 1962-12-04 | Lab For Electronics Inc | Antenna beam scanning system |
FR2694452A1 (en) * | 1992-07-30 | 1994-02-04 | Alcatel Telspace | Adjustable narrow passband filter with quick response for microwave communications - has coupler of dimensions for evanescent mode with cylindrical polycrystalline ferrite resonator in adjustable magnetic field |
Also Published As
Publication number | Publication date |
---|---|
BE555804A (en) | |
GB821171A (en) | 1959-09-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
BE597017Q (en) | Improvements to dispensing devices | |
FR1148543A (en) | Improvements to polishing devices | |
FR1145564A (en) | Improvements to sanitary devices | |
FR1152441A (en) | Improvements to faucets | |
FR1146901A (en) | Improvements to radar devices | |
FR70100E (en) | Improvements to radar devices | |
FR1163605A (en) | Improvements to television sets | |
FR1163735A (en) | Improvements to drying devices | |
FR1167767A (en) | Radar | |
FR68170E (en) | Improvements to electromagnetic time devices | |
FR1181666A (en) | Improvements to echo sounding devices | |
FR1181018A (en) | Improvements to pre-laminating devices | |
FR1145486A (en) | Improvements to electromagnetic detection devices | |
FR1143886A (en) | Improvements to massage devices | |
FR1152512A (en) | Improvements to tracking devices | |
FR1152775A (en) | Improvements to datograph mechanisms for time devices | |
FR1188520A (en) | Improvements to teleprinter devices | |
FR1147147A (en) | Improvements to electrostatic precipitation devices | |
FR1163206A (en) | Improvements to indicator-calculating devices | |
FR1211865A (en) | Improvements to spraying devices | |
FR1170973A (en) | Improvements to weighing devices | |
FR1159011A (en) | Improvements to duplicating devices | |
FR1168997A (en) | Improvements to molding devices | |
FR1184748A (en) | Improvements to combustion devices | |
FR1162206A (en) | Improvements to electroplating devices |