The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 20, 2003
Filed:
Aug. 10, 2000
Yoel Krupnik, Jerusalem, IL;
Lior Horwitz, Nirit, IL;
Intel Corporation, Santa Clara, CA (US);
Abstract
A differential envelope detector for detecting the envelope of a received differential signal. The received differential signal comprises first and second received voltages, and the differential envelope detector provides a differential output voltage comprising first and second output voltages, where the difference of the first and second output voltages is indicative of the envelope of the difference of the first and second received voltages. For full-wave rectification, the first received voltage is coupled to the non-inverting input port of a first differential amplifier and the inverting input port of a second differential amplifier, and the second received voltage is coupled to the inverting input port of the first differential amplifier and the non-inverting input port of the second differential amplifier. The output ports of the differential amplifiers are coupled to their input ports to provide negative feedback. The output ports of the differential amplifiers source and sink small-signal current to and from capacitors, where the voltage potential of the capacitors provides the first and second output voltages.