Embedded planar antenna and pertaining tuning method
CA 2561278 C · Owner: Kathrein-Werke Kg · Inventors: Schillmeier, Gerald; Mierke, Frank
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an improved planar antenna especially a patch , antenna (1), which comprises an electrically conductive ground plane (2); a first dielectric substrate layer (3) arranged on said ground plane (2) and having a first relative permittivity; at least one electrically conductive effective area (4) arranged on the first dielectric substrate layer (3) and electrically connected to one end (5a) of an electrically conductive feed line (5); at least one second dielectric substrate layer (6) arranged on the effective area (4) and having a second relative permittivity; whereby the second relative permittivity is larger or equal the first relative permittivity.
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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 24, 2005 and granted November 13, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 24, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.