Method and apparatus for generating an rf signal
CA 2390097 A1 · Owner: Telefonaktiebolaget Lm Ericsson · Inventors: Dalipi, Spendim; Hellberg, Richard; Fonden, Tony
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
To generate a high-power modulated radio frequency (RF) signal (SOUT) from an input low or medium frequency information signal (SIN) the information signal is pulse-shaped in a quantifier (108) to form a digital signal (SD) having discrete signal values. The digital signal is processed in a switching unit (106) comprising switches (SW1, SW2, ... SWM) for each signal value radio , frequency wave generators (210) for each switch generating carrier waves of radio frequency, and control circuits (216) for each switch to control the opening and closing thereof. When a switch is closed its associated generator , is connected to the output line of the switching unit and when it is opened, …
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 November 20, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 20, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 20, 2022.
- 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.