Rf power amplifier with linearization
CA 2109063 C · Owner: Wray, Antony John · Inventors: Bridle, Matthew Quinton; Wray, Antony John; Valentine, Stephen Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A radio transmitter is provided comprising: a power amplifier (12); linearizing means (10) for maintaining linearity in the power amplifier; and feedback means (13) for feeding a signal from an output of the power amplifier to the linearizing means for maintaining linearity, said amplifier, linearizing means and feedback means forming a loop having adjustable loop linearization parameters (for example phase and gain); a look-up table (19) for storing predetermined loop linearization parameters; and control means having an operating condition input said control means being , coupled to the look-up table and the loop for selecting a loop linearization parameter in response to a transmit …
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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 February 25, 1993 and granted December 17, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 25, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 25, 2015.
- 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.