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Assigning RF DC Transfer Difference to RF Voltage Primary Standard from 1 MHz to 1000 MHz
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National Physical Laboratory (NPL) India is the premier research & development center and the National Metrology Institute (NMI), which provides traceability in measurements by calibration throughout the country. Radio frequency (RF) voltage is one of the important parameter in RF metrology. At NPLI the primary standard of RF Voltage at frequencies from 1 MHz to 1000 MHz is a twin resistance coaxial power mount. The calibration technique and the traceability in assigning the RF DC transfer difference to RF voltage primary standard are described in this paper This technique has been established for accurate measurement and characterization of twin resistance coaxial power mount by assigning RF DC transfer differences in terms of RF power, RF impedance and DC resistance. The calibrated results of the RF voltage primary standard have been discussed in this paper. The overall uncertainty in assigning RF DC transfer difference has been found to lie within 0.53% in the frequency range up to 1 GHz.
Keywords
RF-DC Transfer Difference, RF Voltage, Standard, Calibration, Traceability, Effective Efficiency.
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