Monopulse radar apparatus
CA 1104238 A · Owner: Hollandse Signaalapparaten B.V. · Inventors: Vaessen, Dorotheus C.L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a monopulse radar apparatus for the automatic angle tracking of a moving target whereby angle tracking errors, incurred if the polarisation of the received signals is orthogonal to the polarisation of the radar receiver, are prevented. The monopulse radar thereto comprises two monopulse clusters tuned to the same frequency band but attuned to receive mutually orthogonal polarisations; only one of these clusters lends itself for the transmission of r.f. signals. On the supply of sum and difference signals from the two clusters the receiver produces the angular, error signals required to keep the radar directed at the target. These error signals are determined by the …
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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 June 30, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 1998.
- 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.