Radio receiver and transmitter providing diversity
CA 2076290 A1 · Owner: Motorola Limited · Inventors: Watson, Andrew William Drewry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, A radio receiver is provided comprising first (10) and second (11) antennas, physically spaced apart to provide diversity and an equalizer (20) for combining components of a received symbol which are separated in time. The signals received at the first and second antennas are combined in a combiner (19) and coupled to the equalizer. Variable delay means (18) are provided in the receive path of one of the antennas, for delaying signals received at that antenna with respect to signals received at the other antenna whereby the probability of destructive interference between the signals from the first and second antennas is significantly reduced. In accordance with a second aspect of …
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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 August 18, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 18, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 18, 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.