ZA813997B - A response evice for a system for automatic wireless transmission of multi-digit items of numerical information between active interrogation devices and passive response devices which are mobile relative to one another - Google Patents
A response evice for a system for automatic wireless transmission of multi-digit items of numerical information between active interrogation devices and passive response devices which are mobile relative to one anotherInfo
- Publication number
- ZA813997B ZA813997B ZA813997A ZA813997A ZA813997B ZA 813997 B ZA813997 B ZA 813997B ZA 813997 A ZA813997 A ZA 813997A ZA 813997 A ZA813997 A ZA 813997A ZA 813997 B ZA813997 B ZA 813997B
- Authority
- ZA
- South Africa
- Prior art keywords
- response
- devices
- evice
- wireless transmission
- another
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 title 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
- B61L25/04—Indicating or recording train identities
- B61L25/045—Indicating or recording train identities using reradiating tags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
- B61L25/04—Indicating or recording train identities
-
- 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
- G01S13/751—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 wherein the responder or reflector radiates a coded signal
- G01S13/753—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 wherein the responder or reflector radiates a coded signal using frequency selective elements, e.g. resonator
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Mechanical Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19803022524 DE3022524A1 (de) | 1980-06-16 | 1980-06-16 | Antwortgeraet fuer ein system zum selbsttaetigen drahtlosen uebertragen von mehrstelligen numerischen informationen zwischen gegeneinander bewegbaren aktiven abfragegeraeten und passiven antwortgeraeten |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA813997B true ZA813997B (en) | 1982-06-30 |
Family
ID=6104741
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA813997A ZA813997B (en) | 1980-06-16 | 1981-06-15 | A response evice for a system for automatic wireless transmission of multi-digit items of numerical information between active interrogation devices and passive response devices which are mobile relative to one another |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0042110A1 (xx) |
AU (1) | AU7183381A (xx) |
DE (1) | DE3022524A1 (xx) |
ZA (1) | ZA813997B (xx) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5986526A (en) * | 1997-03-03 | 1999-11-16 | Ems Technologies Canada, Ltd. | RF microwave bellows tuning post |
EP2903084B1 (en) | 2014-02-04 | 2019-01-16 | Alcatel Lucent | A resonator assembly and filter |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2286408A (en) * | 1938-04-07 | 1942-06-16 | Rca Corp | Concentric resonant line |
FR1006613A (fr) * | 1948-02-07 | 1952-04-25 | Onera (Off Nat Aerospatiale) | Perfectionnements apportés aux dispositifs du genre des cavités ou volumes résonnants |
US2660711A (en) * | 1948-12-17 | 1953-11-24 | Westinghouse Electric Corp | Self-tuning resonant cavity |
SU623448A1 (ru) * | 1976-08-02 | 1979-03-15 | Предприятие П/Я А-7904 | Устройство дл перестройки частоты коаксиального резонатора |
DE2644233A1 (de) * | 1976-09-30 | 1978-04-06 | Siemens Ag | Abstimmvorrichtung fuer einen koaxialresonator |
-
1980
- 1980-06-16 DE DE19803022524 patent/DE3022524A1/de not_active Ceased
-
1981
- 1981-06-03 EP EP81104279A patent/EP0042110A1/de not_active Withdrawn
- 1981-06-15 ZA ZA813997A patent/ZA813997B/xx unknown
- 1981-06-15 AU AU71833/81A patent/AU7183381A/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
EP0042110A1 (de) | 1981-12-23 |
DE3022524A1 (de) | 1982-01-07 |
AU7183381A (en) | 1981-12-24 |
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