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Power Sensor Calibration by Implementing True-Twin Microcalorimeter

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4 Author(s)
Vremera, E.T. ; Fac. of Electr. Eng., Gheorghe Asachi Tech. Univ. of Iasi, Iasi, Romania ; Brunetti, L. ; Oberto, L. ; Sellone, M.

A new calibration method related to a twin-type microcalorimeter is proposed for high-frequency power sensors. This method is based on intrinsic compensation of feeding line losses, operation that results in a unitary-gain microcalorimeter, whose mathematical model becomes similar to that of the lossless ideal system. Moreover, the time-consuming procedure required for a proper and autonomous microcalorimeter calibration, based on short or open-circuit load, is not necessary, and the microcalorimeter mount-dismount operation between raw measurements and microcalorimeter calibration steps disappears. The overall measurement time becomes about two times shorter when this system is used for the effective efficiency calibration of power sensors.

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Instrumentation and Measurement, IEEE Transactions on  (Volume:60 ,  Issue: 7 )