Monopulse processor digital correction circuit
CA 2075498 C · Owner: Allied-Signal Inc. · Inventors: Sinsky, Allen Isaac
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and correction circuit is described incorporating a monopulse receiver (30), injecting a first signal of known amplitude and arbitrary phase and a send signal of the same amplitude shifted 90° and measuring the output voltages of the channel and using the measurements to generate four coefficients which may be mathematically applied to the output signals of the channel to provide a corrected output (71 72, 71', 72'). The invention , overcomes the problem of compensating for phase and gain drift in the in-phase and quadrature paths of the sum and difference channels of a monopulse receiver,
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 February 26, 1991 and granted January 2, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 26, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 26, 2013.
- 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.