Coaxial balun with doubly balanced heterodyne converter
CA 1077145 A · Owner: Varian Associates · Inventors: Hill, Joseph C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Two coaxial lines mounted orthogonally to each other and within a common shield to form a doubly balanced heterodyne converter, the shield being connected from a first to a second point on each line and the outer conducter of each line being discontinuous at an intermediate point inside the shield. The intermediate terminals can be connected to opposite terminals of a four-diode bridge mounted between baluns which are formed by the shield and the lines. A heterodyne output signal is derived at the intermediate terminals of one of the coaxial baluns by means of two quarter wave lines which are connected at their ends remote from the balun to form a heterodyne output terminal. The coaxial …
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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
- Granted May 6, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 6, 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.