Antenna array having reduced sensitivity to frequency-shift effects
CA 2298219 C · Owner: Marzetta, Thomas Louis · Inventors: Hochwald, Bertrand M.; Marzetta, Thomas Louis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
We disclose a system for sending wireless communication signals on at least one downlink wavelength and receiving wireless communication signals on at least, one uplink wavelength, wherein there is a ratio r equal to the larger divided by the, smaller of these wavelengths. The system comprises a receiver operative to receive, signals imposed on a carrier having the uplink wavelength a transmitter , operative to, transmit signals imposed on a carrier having the downlink wavelength and an , array, of independent antenna elements. The array comprises a first and a second sub-array. One sub-array is electrically coupled to the transmitter such that transmitted signals can be , radiated from …
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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
- Filed February 9, 2000 and granted July 9, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 9, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 9, 2022.
- 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
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.