Intermediate frequency slope compensation control arrangements
CA 1181817 A · Owner: Nortel Networks Limited · Inventors: Mcnicol, John D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure In a microwave digital radio transmission system receiver in which a modulated carrier wave is converted to an I.F. signal which is demodulated to produce phase quadrature signals an apparent frequency, error of the carrier wave is detected from the phase quadrature signals and used to control means, such as an I.F. amplitude equalizer for, compensating for amplitude slope of the I.F. signal. A control signal is produced by low pass filtering a product of one phase quadrature signal with the time differential of the other or the difference between the, products of each phase quadrature signal with the time differential of the respective other phase quadrature …
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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 January 29, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 29, 2002.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.