180· phase shift structure in wideband microwaves
CA 2376172 A1 · Owner: Hoyland, Roger · Inventors: Hoyland, Roger
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a 180~ phase shift structure in wideband microwaves consisting of microwave or millimetric wave elements such as waveguides microstrips, striplines or coaxial cables which are connected in such a way , that they can produce a structure with a 180~ phase difference between the two possible low-loss outputs in the band width used with a high band width, flat , phase and balanced amplitude. The structure disclosed in the invention is based on interconnection of two hybrid rings ("magic T") that are embodied according to a given configuration of the different ports of the two rings thereby providing a unique structure resulting in a practical application device with …
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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 April 4, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 4, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 4, 2023.
- 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.