Frequency synthesis in a radio communications transceiver
CA 2202687 A1 · Owner: Lalau, Richard · Inventors: Lalau, Richard; Vanderhelm, Ronald John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optimized radio transceiver architecture is provided in which the number of component parts, and hence cost is reduced. Also, a method is, provided of synthesizing a plurality of frequencies for use in a radio apparatus in at least one of a receive signal path and a transmit signal path the method, involving the steps of synthesizing a first frequency using a phase lock loop having a reference frequency oscillator producing a reference frequency; and deriving from the reference frequency a second frequency by frequency multiplying the reference frequency.
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 April 15, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 15, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 15, 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.