Method and device for delay-sensitive measurement of a signal

Details Method and device for delay-sensitive measurement of a signal Method and device for delay-sensitive measurement of a signal

2005-09-06

2009-06-30

Payne, David C (Department: 2611)

Pulse or digital communications

Receivers

C375S320000, C375S219000, C455S073000

Reexamination Certificate

active

07555062

ABSTRACT:
A method and device for detecting the amplitude and/or the phase position of an intensity-modulated signal, including the following: detecting an instant value of the intensity-modulated signal and of a first reference signal with a frequency differing from the intensity-modulated signal; mixing the first reference signal with the intensity-modulated signal to obtain a mixed-signal value; detecting an instant value of a second reference signal with a frequency differing from both the previously detected signals and of a third reference signal of the same frequency but phase-shifted from the second reference signal; mixing the mixed-signal value with the second reference signal to yield a first measurement value; mixing the mixed-signal value with the third reference signal to yield a second measurement signal value; and calculating the amplitude and/or phase position from the two measurement signal values.

REFERENCES:
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patent: 2002/0181518 (2002-12-01), Mizutani
patent: 2004/0257478 (2004-12-01), Su
patent: 2006/0255791 (2006-11-01), Messing et al.
patent: 2006/0293786 (2006-12-01), Baba et al.
patent: 19902612 (2000-07-01), None
patent: 10039422 (2002-02-01), None
patent: WO 0214814 (2002-02-01), None

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