Multibeam satellite communication antenna
CA 2345047 A1 · Owner: Sangiolo, John · Inventors: Cardiasmenos, Apostle G.; Sangiolo, John; Rhoades, Luther E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A low-cost spherical reflector and a mechanically scanned antenna system utilizing such reflectors. The system employs one or more (substantially similar) primary spherical reflectors (each a truncated spherical surface) each having an associated moveable feed driven by a two-axis positioner mechanism that has few moving parts. The feed structure may preferably comprise a point source waveguide feed in combination with a shaped concave secondary reflector used in a Gregorian-like configuration to correct for spherical phase error. The positioner mechanism moves Gregorian-like congiguration to correct for spherical phase error. The positioner mechanism move the waveguide feed and …
Read the whole patent
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
- Filed May 20, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 20, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 20, 2021.
- 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.