Linearly-polarized dual-band base-station antenna
CA 2465730 A1 · Owner: Tillery, James K. · Inventors: Tillery, James K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dual-band antenna (100) suitable for use in a cellular telephone network base station includes two parallel arrays (102) of low-frequency dipole elements (104) disposed on a ground plane (110) a raised array (106) of high-, frequency dipole elements (108) disposed between the two parallel arrays (102), and at least one beamforming rod (112) disposed between the raised array (106) and the two parallel arrays (102). The two parallel arrays (102) operatively from symmetric azimuth radiation patterns in a lower range of frequencies. The raised array (106) and the high frequency beamforming rod (112) likewise operatively form symmetric azimuth radiation patterns in a higher range of …
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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 November 7, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 7, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 7, 2024.
- 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.