Phased array antenna module
CA 2083539 A1 · Owner: Hollandse Signaalapparaten B.V. · Inventors: Zwarts, Johan Martin Carol
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Antenna module for an extremely wideband active monopulse phased array system, comprising a housing provided with four radiators of the rectangular open-ended waveguide type and with an electric circuit. With the antenna modules being suitably stacked the, radiators constitute a substantially continuous antenna surface the, radiators being positioned at the points of intersection of a system of equilateral triangles which make up the antenna surface. After preamplification phase shift and down-conversion to an, intermediate frequency received signals from a large number of antenna modules are combined to yield a sum beam an azimuth, difference beam and an elevation difference beam.
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 November 23, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 23, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 23, 2014.
- 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.