NL91659C - - Google Patents
Info
- Publication number
- NL91659C NL91659C NL91659DA NL91659C NL 91659 C NL91659 C NL 91659C NL 91659D A NL91659D A NL 91659DA NL 91659 C NL91659 C NL 91659C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
-
- 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
- G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
- G01S13/75—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
- H01Q15/18—Reflecting surfaces; Equivalent structures comprising plurality of mutually inclined plane surfaces, e.g. corner reflector
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Aerials With Secondary Devices (AREA)
- Radar Systems Or Details Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE684300X | 1950-05-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL91659C true NL91659C (ja) |
Family
ID=20315011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL91659D NL91659C (ja) | 1950-05-13 |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE889617C (ja) |
| FR (1) | FR1034778A (ja) |
| GB (1) | GB684300A (ja) |
| NL (1) | NL91659C (ja) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL179394C (nl) * | 1952-06-25 | Cabot Corp | Werkwijze voor het bereiden van ovenroeten met een verlaagde structuur. | |
| US3484619A (en) * | 1966-10-24 | 1969-12-16 | Ikor Inc | Radio frequency generators |
| GB1292380A (en) * | 1969-04-02 | 1972-10-11 | Unisearch Ltd | Electronic surveillance systems |
| DE2833509A1 (de) * | 1978-07-31 | 1980-02-14 | Siemens Ag | Einrichtung zur identifizierung und/oder 0rtung von gegenstaenden und personen |
| DE102010001440B4 (de) * | 2010-02-01 | 2014-01-16 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Verfahren und Mess-System zur Messung des Wasserstands eines Gewässers |
| GB2609362B (en) | 2018-05-17 | 2023-05-03 | Swisscom Ag | A telecommunications system |
| CN110749864B (zh) * | 2019-09-24 | 2021-10-01 | 四川航天燎原科技有限公司 | 一种组阵式角反射器 |
-
0
- NL NL91659D patent/NL91659C/xx active
-
1951
- 1951-02-07 FR FR1034778D patent/FR1034778A/fr not_active Expired
- 1951-04-13 DE DES22705A patent/DE889617C/de not_active Expired
- 1951-05-10 GB GB11040/51A patent/GB684300A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1034778A (fr) | 1953-07-31 |
| GB684300A (en) | 1952-12-17 |
| DE889617C (de) | 1953-09-10 |