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Valori di consenso nel primo confronto nazionale inter-laboratorio potenza in alta frequenza (SIT-AF.01)
No full textTutto Misure - Rivista Nazional
Improvement of primary power standard through international comparison feedback
No full textThe high frequency primary power standard is univocally realized by
means of a coaxial microcalorimeter, at least up to 40 GHz. The coaxial
microcalorimeter is a broadband measurement system adjusted for effective efficiency
measurement of power sensors both of bolometric and thermoelectric type. The critical
point in the power standard realization is in the determination of the calibration constant
g of the microcalorimeter, a frequency dependent parameter that has huge impact on the
accuracy assessment of the standard. The paper proposes a simple but powerful way for
improving this accuracy by using the reference values provided by international key-
comparisons which the microcalorimeter was involved in
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