Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Analysis of complex waves
Patent
1998-12-22
2000-11-28
Metjahic, Safet
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Analysis of complex waves
324 7672, G06G 719
Patent
active
061540218
ABSTRACT:
The difference in phase between a first and a second electrical signal at substantially the same frequency is detected in an interval of 360.degree.. Both the first and the second signals are used as input signals to a first and a second device unambiguous detection of phase differences in an interval of 180.degree., and one input signal to the first detection device is phase-shifted ninety degrees. The output signal from the first phase detection device is used in order to indicate whether the output signal from the second phase detection device corresponds to a phase difference that is greater or smaller than 180.degree.. Also, the output signal from the second phase device is used in order to produce, with the aid of the output signal from the first phase detection device, an output signal that indicates unambiguously, in an interval of 360.degree., the value of the phase difference between the first and the second input signal.
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Bergman Johan
Kraus Thorsten
Metjahic Safet
Nguyen Vincent Q.
Telefonaktiebolaget LM Ericsson (publ)
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