Broadband nonhomogeneous multi-segmented dielectric resonator antenna system
CA 2201048 C · Owner: Cuhaci, Michel · Inventors: Cuhaci, Michel; Larose, Richard; Mongia, Rajesh
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dielectric resonator antenna system is disclosed wherein a dielectric material having a, high dielectric constant is placed between a dielectric resonator antenna (DRA) and the, antenna feed. Preferably the dielectric material having a high dielectric constant is either, in the form of an insert within a cavity of the DRA or alternatively is in the form of a thin, layer between the feed and the DRA for enhancing coupling therebetween. It is preferred, that the high dielectric constant material be at least twice the value of the dielectric, resonator antenna. 14
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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 March 26, 1997 and granted October 28, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 26, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 2019.
- 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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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.