Angle demodulator
CA 1255365 A · Owner: N.V.Philips'Gloeilampenfabrieken · Inventors: Schoonheijm, Harry B.; Kasperkovitz, Wolfdietrich G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PHN 11.543 18 02.09.1986, ABSTRACT, Angle demodulator. Angle demodulator having a signal input (I) for applying an angle-modulated input carrier (A) thereto which demodulator is, coupled to a phase detection arrangement (2) to which also a quadrature detection carrier (D) frequency-coupled with the input carrier (A) is applied for demodulating the angle modulation signal said quadrature, detection carrier (D) being shifted at least substantially 90° in phase relative to the input carrier (A) at the central frequency of the input carrier (A), said phase detection arrangement (2) being coupled via a low-pass filter (6) to a signal output (O). Angle demodulators of this type, which may be …
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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 June 6, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 6, 2006.
- 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.