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Expired Canadian patentCanada

Vector modulation signal generator

CA 1323671 C · Owner: Edwards, Allen P. · Inventors: Gildea, David R.; Edwards, Allen P.

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A novel vector signal generator is provided which includes a vector modulator controlled by baseband manipulation circuitry. The output signal from the vector modulator is down converted to a desired output frequency. The baseband manipulation circuitry provides, under digital control from, for example a, microprocessor, adjustments to the phase carrier leak-, age, and modulation levels of the I and Q signals. In this manner, a highly accurate vector modulated signal is generated within a wide range of carrier frequencies.

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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 October 26, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 26, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 26, 1988
GrantedOctober 26, 1993
Term endedOctober 26, 2010
Patent numberCA 1323671 C
Classification (IPC)H04L27/04 +1 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedAug 26, 1988Patent grantedOct 26, 1993Term endedOct 26, 2010

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.