Distributed receiver system for antenna array
CA 2024929 C · Owner: Bodonyi, Janos · Inventors: Bodonyi, Janos
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
19-, In an antenna array of large dimensions such as, might be used for high frequency radar the antennas 1a, lb, will be connected by short feeders 2a 2b, to, receivers 3a, 3b, which will consequently be distributed over a considerable distance. To calibrate such an antenna array to compensate for variations in the transfer functions of the receivers will necessitate the same test signal being fed into each element in turn to measure the receiver output, and this could be time consuming and hence reduce the time available for use of the array. To overcome this disadvantage a loop 5 is connected, at various toppings to the feeders 2a 2b, the respective, antennas being disconnected and …
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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
- Filed September 10, 1990 and granted January 11, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 10, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 10, 2012.
- 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.