Patent · US Active

Method and device for delay-sensitive measurement of a signal

US7555062B2 · kind B2 · utility

1Cited by

1References

5Claims

0Family size

Assignee

PMD TECHNOLOGIES AG · DE

Inventors

Torsten Gollewski · Lenting, DE
Robert Lange · Netphen, DE
Thorsten Ringbeck · Siegen, DE
Holger Heβ · Siegen, DE
Bernd Buxbaum · Westerburg, DE

Key dates

Filing date	Sep 6, 2005
Grant date	Jun 30, 2009
Priority date	—
Expiry date	May 23, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH03D2200/0082
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.