DK25875A - - Google Patents
Info
- Publication number
- DK25875A DK25875A DK25875A DK25875A DK25875A DK 25875 A DK25875 A DK 25875A DK 25875 A DK25875 A DK 25875A DK 25875 A DK25875 A DK 25875A DK 25875 A DK25875 A DK 25875A
- Authority
- DK
- Denmark
Links
Classifications
-
- 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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
- G01S13/42—Simultaneous measurement of distance and other co-ordinates
- G01S13/44—Monopulse radar, i.e. simultaneous lobing
- G01S13/4409—HF sub-systems particularly adapted therefor, e.g. circuits for signal combination
-
- 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
- G01S3/14—Systems for determining direction or deviation from predetermined direction
-
- 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
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
- H01Q25/02—Antennas or antenna systems providing at least two radiating patterns providing sum and difference patterns
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB431374A GB1472893A (en) | 1974-01-30 | 1974-01-30 | Directional antenna systems |
DE19742460624 DE2460624C2 (de) | 1974-01-30 | 1974-12-20 | Richtantennensystem mit Nachführeinrichtung |
Publications (3)
Publication Number | Publication Date |
---|---|
DK25875A true DK25875A (da) | 1975-10-13 |
DK136563B DK136563B (da) | 1977-10-24 |
DK136563C DK136563C (da) | 1978-03-20 |
Family
ID=25768133
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK25875A DK136563B (da) | 1974-01-30 | 1975-01-27 | Retningsantenneanlæg med følgeindretning. |
Country Status (3)
Country | Link |
---|---|
DK (1) | DK136563B (da) |
IE (1) | IE40485B1 (da) |
NL (1) | NL171645C (da) |
-
1975
- 1975-01-27 DK DK25875A patent/DK136563B/da not_active IP Right Cessation
- 1975-01-28 NL NL7501006A patent/NL171645C/xx not_active IP Right Cessation
- 1975-01-28 IE IE16575A patent/IE40485B1/xx unknown
Also Published As
Publication number | Publication date |
---|---|
NL171645B (nl) | 1982-11-16 |
NL171645C (nl) | 1983-04-18 |
NL7501006A (en) | 1975-08-01 |
IE40485B1 (en) | 1979-06-06 |
DK136563B (da) | 1977-10-24 |
DK136563C (da) | 1978-03-20 |
IE40485L (en) | 1975-07-30 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PBP | Patent lapsed |