High signal to noise ratio amplitude detector
CA 1287125 C · Owner: Hewlett-Packard Company · Inventors: Herleikson, Earl Clark
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
High Signal To Noise Ratio Amplitude Detector Abstract, A low noise floor amplitude detector circuit utilizes a pair of semiconductor diodes connected between a radio frequency signal source and a terminating device that biases the diode at a conduction angle selected for maximum signal to noise ratio in the detector circuit. Optimum bias conditions and a low signal to noise ratio is achieved by using a conduction angle at each diode of 1.656 radians (approximately 67 degrees). This also results in matching of the radio frequency load impedance of the amplitude detector to the radio frequency impedance of a signal source.
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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 July 30, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 30, 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.