Efficient multicarrier filter
CA 2434096 A1 · Owner: Qualcomm Incorporated · Inventors: Ekvetchavit, Thunyachate; Kang, Inyup; Vedam, Maruthy
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A multi-carrier filter for a wireless communications system employing a multicarrier signal. The multi-carrier filter includes a first mechanism for receiving the multi-carrier signal and extracting carrier signal components of the multi-carrier signal in response thereto. A second mechanism filters the carrier signal components and outputs a demodulated and filtered multibandwidth signal in response thereto. In the specific embodiment the first , mechanism includes a rotator. The multi-carrier signal is a 3x bandwidth multicarrier signal having three carrier components. The three carrier components include a center carrier, a left carrier and a right carrier. The center , carrier 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
- Filed January 4, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 4, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 4, 2024.
- 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.