Automatic tracking system for antenna
CA 1207080 A · Owner: Nec Corporation · Inventors: Shimizu, Ryuji; Kuroda, Takao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An automatic tracking system for an antenna device for satellite communications and using step tracking principles is disclosed which repeatedly effects tracking at predetermined intervals so that the receive electric field from the satellite becomes maximum. When a platform loaded with an antenna device for satellite communications is caused to sway to an inclined position during an interval between sequential tracking operations sensors, senses a pitching angle and a rolling angle of the platform. The outputs of the sensors are compared with an angle previously stored as an inclination angle of the platform which existed just before interval between sequential tracking operations. If the …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted July 2, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 2003.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.