Frequency conversion circuit and method for millimeter wave radio
CA 2237619 C · Owner: Hennegan, Richard T. · Inventors: Blacketer, Steve; Santos, Raymond, Jr.; Hennegan, Richard T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A frequency upconversion circuit in a millimeter wave radio transmitter uses a low frequency synthesizer (38) and a parallel frequency mixing and multiplication network for converting a low frequency signal to a millimeter wave radio frequency (RF) signal. A frequency downconversion circuit in a millimeter wave radio receiver uses a low frequency synthesizer (62) and a parallel frequency mixing and multiplication network for converting a millimeter wave RF signal to a low frequency signal.
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
- Filed August 22, 1997 and granted August 7, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 22, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 22, 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
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.