High speed envelope detector and method

Details High speed envelope detector and method High speed envelope detector and method

2005-12-27

2005-12-27

Decady, Albert (Department: 2133)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

For fault location

Reexamination Certificate

active

06980006

ABSTRACT:
Envelope detector and method for determining whether the level of a differential input signal DPIN−DNIN is above a reference voltage VREF. The differential input signal is converted to a differential current IDP−IDN, the reference voltage is converted to a reference current IREF, the currents are compared to determine if |IDP−IDN| is greater than IREF, and a valid differential signal is indicated when |IDP−IDN| is greater than IREF.

REFERENCES:
patent: 4809554 (1989-03-01), Shade et al.
patent: 4890066 (1989-12-01), Straver et al.
patent: 6556535 (2003-04-01), Kobayashi

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