Miscellaneous active electrical nonlinear devices – circuits – and – Gating – Utilizing three or more electrode solid-state device
Reexamination Certificate
2004-10-29
2008-05-20
Le, Lana (Department: 2618)
Miscellaneous active electrical nonlinear devices, circuits, and
Gating
Utilizing three or more electrode solid-state device
C455S067110, C455S127100, C327S058000, C327S061000, C327S327000, C327S437000
Reexamination Certificate
active
07375578
ABSTRACT:
An RF envelope detection circuit that operations at low currents, high sensitivity, and high dynamic range. The circuit receives an AC signal at its input terminal and applies a signal on its output terminal that is a function of the envelope magnitude of the AC signal. To do so, a current source provides a current with an AC signal being superimposed thereon. A rectification circuit rectifies the AC component of this current. A voltage amplifier then amplifies the voltage for providing on the output terminal of the detection circuit. A current sink draws a current from the output terminal that has approximately the same magnitude as the current provided by the current source. A capacitor is coupled to the output terminal of the rectifier so as to store excess charge provided by the rectifier that is in excess of the magnitude of the current provided by the current source.
REFERENCES:
patent: 4000472 (1976-12-01), Eastland et al.
patent: 4250457 (1981-02-01), Hofmann
patent: 4319196 (1982-03-01), Kwan
patent: 4490681 (1984-12-01), Turner
patent: 4603299 (1986-07-01), Monett
patent: 4720685 (1988-01-01), Garuts
patent: 4866396 (1989-09-01), Tamura
patent: 5404113 (1995-04-01), Nitardy
patent: 5481218 (1996-01-01), Nordholt et al.
patent: 5724002 (1998-03-01), Hulick
patent: 6064238 (2000-05-01), Wight et al.
patent: 6566915 (2003-05-01), Krupnik et al.
patent: 6573779 (2003-06-01), Sidiropoulos et al.
patent: 6590379 (2003-07-01), Mercier
patent: 6600344 (2003-07-01), Newman et al.
patent: 6888409 (2005-05-01), Taylor
patent: 7026797 (2006-04-01), McCune, Jr.
patent: 7095256 (2006-08-01), Zhak et al.
patent: 2005/0168282 (2005-08-01), Koukkari et al.
Blanchard Shane B.
Christensen Craig L.
Guzman April S.
Le Lana
ON Semiconductor
Workman Nydegger
LandOfFree
Radio frequency envelope detector does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Radio frequency envelope detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radio frequency envelope detector will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3984527