Phase slope equalizer
CA 1234912 A · Owner: Ems Technologies Canada, Ltd. · Inventors: Mok, Chuck K.; Martin, Alain
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A microwave antenna feed network dispenses with the conventional phase shifters. Instead, the required phase relationships between the different individual antenna components is achieved by means of a new device, known as a phase slope equalizer, placed in each feed line. This device is formed of a section of wavequide containing one or more resonant circuit elements. Each element comprises, for example a pair of spaced, inductive posts and capacitive tuning screw or an inductive iris, and a capacitive tuning screw or a resonant slot. The phase, slope equalizer exhibits a substantially constant slope phase shift/frequency response curve extending from a positive phase shift through zero …
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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 April 5, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 5, 2005.
- 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.