Electromagnetically coupled microstrip antennas having feeding patches capacitively coupled to feedlines
CA 1263181 C · Owner: Zaghloul, Amir Ibrahim · Inventors: Zaghloul, Amir Ibrahim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A microstrip antenna array having broadband linear polarization, and circular polarization with high polarization purity, feedlines (2) of the array being capacitively coupled to feeding patches (3) at a single feedpoint or at multiple feedpoints, the feeding patches in turn being electromagnetically coupled to corresponding radiating patches (4). The contactless coupling enables simple inexpensive, multilayer manufacture.
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
- Granted November 21, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 21, 2006.
- 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.