4-quadrant multiplier
CA 1092663 A · Owner: Communications Satellite Corporation · Inventors: Uzunoglu, Vasil
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An operational amplifier uses p- and n-channel enhancement type MOSFETs as variable input resistors on the inverting and non-inverting legs, respectively of the, amplifier, and the sources and gates of the MOSFETs are tied together. By using VS, the source-to-ground voltage and, VGS, the gate-to-source voltage, as input signals the, device will perform 4-quadrant multiplication at operating frequencies as high as 400 MHz.
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
- Granted December 30, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 30, 1997.
- 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.