Method and apparatus for setting the signal-to-noise ratio of a carrier wave
CA 1289624 C · Owner: Faulkner, Thomas R. · Inventors: Faulkner, Thomas R.; Herleikson, Earl C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
12, Abstract, A signal source which provides a carrier signal having a precisely set signal-to-noise ratio is provided. The carrier signal and its sideband noise components are attenuated below the equivalent thermal noise floor of an attenuator. The attenuated carrier signal and the equivalent thermal noise floor are then amplified in an amplifier having a known noise figure to produce a composite carrier signal having a usable power level and a precisely known signal-to-noise ratio. Since the equivalent thermal noise floor is a function only of temperature, the desired carrier signal-to-noise ratio may he set by setting the power level of the carrier signal and knowing the noise figure of …
Read the whole patent
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 September 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 24, 2008.
- 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.