Apparatus and method for attenuating an undesired signal in a radio transceiver
CA 2127189 A1 · Owner: Motorola, Inc. · Inventors: Crnkovic, James John; Kim, Jin Dong
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus and Method for Attenuating, an Undesired Signal in a Radio Transceiver Abstract of the Disclosure, A radio transceiver (100) includes a transmitter (101) and a receiver (103) operating at different respective frequencies. The transmitter (101) is capable of producing an undesired signal (121) including a frequency substantially equal to the receiver operating frequency (107). A first antenna (102) is coupled to the transmitter (101). A second antenna (104) is coupled to the receiver (103) and electrically isolated (122) from the first antenna (102) by a predetermined degree such that the undesired signal (121) received by the second antenna (104) is attenuated by the predetermined …
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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 June 30, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 30, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 30, 2016.
- 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
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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.