Data processing: measuring – calibrating – or testing – Measurement system – Performance or efficiency evaluation
Reexamination Certificate
2011-08-09
2011-08-09
Nghiem, Michael P (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system
Performance or efficiency evaluation
C702S179000, C702S183000, C702S186000
Reexamination Certificate
active
07996184
ABSTRACT:
Errors of a measuring system are corrected by acquiring the phases of transmission tracking errors. A network analyzer includes a measuring system error factor recording unit which records measuring system error factors generated independently of frequency conversion carried out by a DUT, and an error factor acquiring unit which measures first coefficients and second coefficients of a correction mixer where a signal output from a terminal is a sum of a product of a signal input to the terminal and the first coefficient, and a product of a signal input to the other terminal and the second coefficient, and the ratio of magnitudes of the second coefficients is constant, and acquires the transmission tracking errors caused by the frequency conversion based on the measuring system error factors recorded in the measuring system error factor recording unit, the first coefficients, and the second coefficients.
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Nakayama et al., Network Analyzer, Network Analyzing Method, Automatic Corrector, Correcting Method, Program, and Recording Medium, 2003, English translation from Jpanese, pp. 1-68.
Nakayama et al., Network Analyzer, Network Analyzing Method, Automatic Corrector, Correcting Method, Program and Recording Medium, 2003, English translation from Japanese, pp. 1-68-JP 03/087856 A1 (2003).
Nakayama Yoshikazu
Tanabe Takeshi
Fitzpatrick ,Cella, Harper & Scinto
Nghiem Michael P
Rohde & Schwarz GmbH & Co. KG
Suarez Felix E
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