Coplanar waveguide mounted flip chip
CA 2175087 C · Owner: Endgate Corporation · Inventors: Johnson, Edwin F.; Stoneham, Edward B.; Mohwinkel, Clifford A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A radio-frequency power amplifier (22) includes a multiple-FET chip (26) that is flip mounted on a connection region (32) of a substrate (30). An input impedance-matching network (62 64) is also mounted on the substrate. The network includes a coplanar waveguide (24) having an elongate waveguide signal conductor (48b 48c) for each gate terminal (70) on the FET chip (26) with a distal end (48d 48c), spaced from the connection region (32) and a proximal end (48g 48h) in the connection region. A capacitor (54 56) couples each of the, input signal conductor distal ends (48d 48c) to an adjacent ground conductor (36 38). The signal conductors (48b, 48c) and capacitors (54, 56) provide a selected …
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 September 25, 1995 and granted July 20, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 25, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 25, 2017.
- 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.