Radio-frequency output level compensating circuit of portable radio transceiver
CA 2110018 A1 · Owner: Ha, Dong-In · Inventors: Ha, Dong-In
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A circuit for compensating a radio-frequency output level of a portable radio transceiver which full-duplex communicates by a power of battery is disclosed. The circuit includes a radio-frequency signal compensating device having a second power amplifier for power-amplifying an inputted radio-frequency signal up to a transmitting level corresponding to an inputted automatic power control voltage level, second transmitting circuit coupled to an output terminal of the second power amplifier for radiotransmitting the amplified radio-frequency signal second, transmitting output control circuit for supplying a second automatic power control voltage to the second power amplifier in response to …
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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 November 25, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 25, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 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.