Pulse or digital communications – Testing – Phase error or phase jitter
Reexamination Certificate
2005-05-04
2008-12-02
Fan, Chieh M (Department: 2611)
Pulse or digital communications
Testing
Phase error or phase jitter
C375S224000, C375S316000
Reexamination Certificate
active
07460592
ABSTRACT:
There is provided a jitter measuring apparatus for measuring jitter in a signal-under-measurement, having a signal converting section for calculating a spectrum of the signal-under-measurement, a bandwidth calculating section for calculating frequency where a saturation rate of a value of the integrated spectrum of the signal-under-measurement becomes almost equal to a saturation rate set in advance in a band-to-be-measured set in advance as upper cutoff frequency of the band-to-be-measured to calculate the jitter and a jitter calculating section for measuring the jitter in the signal-under-measurement based on the spectaum in the band-to-be-measured of the signal-under-measurement.
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Ishida Masahiro
Soma Mani
Yamaguchi Takahiro
Advantest Corporation
Fan Chieh M
Osha•Liang LLP
Perilla Jason M.
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