Patent Number: 6,429,638

Title: N-diode peak detector

Abstract: A peak detector for measuring the voltage amplitude of low amplitude balanced digital signals. The N-diode peak detector uses the non-linear characteristics of a diode to convert a high speed low amplitude input signal into a DC voltage, linearly proportional to the signal amplitude (peak). A compensation circuit is designed to match the characteristics of a digital modulation signal and track over a large range of temperatures and signal amplitudes. The circuit can be used for digital and analog modulation signals. For analog signals, the peak detector uses a larger number of diodes or a reduced range.

Inventors: Wight; Mark S. (Ottawa, CA), Gagnon; Stephane (Ottawa, CA)

Assignee: Nortel Networks Limited

International Classification: G01R 19/25 (20060101); G01R 19/04 (20060101); G01R 019/30 (); H03K 019/00 ()

Expiration Date: 08/06/2019