Hybrid circuit construction of push-pull power amplifier
CA 2236993 C · Owner: Endwave Corporation · Inventors: Mohwinkel, Clifford A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A means of connecting a plurality of essentially identical active devices (Q1 Q2, Q3, Q4) is presented for the purpose of multifunction and multiple function operation. These devices (Q1, Q2 Q3, Q4), mounted on a chip (66), are flip-mounted to a circuit motherboard having large passive elements. A push-pull amplifier (50) is presented as an example in which the multiple function operation is the combining of amplifiers (56 58) whose active , devices (Q1, Q2, Q3 Q4) are on a single chip (66). The electromagnetic coupling, impedance matching and signal transmission are variously provided by the use of striplines (82, 88), slotlines (94 100), coplanar waveguides (116, 130), and a slotline …
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 October 25, 1996 and granted August 15, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 25, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 25, 2018.
- 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.