Accurate Comparison of Calculable HF Resistance Standards

This paper presents a one-to-one comparison of calculable resistance standards designed for radio frequency (RF) by using a digital bridge relying on the accuracy of two Josephson arbitrary waveform synthesizers (JAWS). In particular, the frequency dependence of these new resistors over a range between 1 kHz and 80 kHz is analyzed. Preliminary results show excellent consistency in the measurement of these artifacts. The corresponding measured impedance values deviate, relatively to the lowest frequency measurement, by a maximum of 0.1 μΩ/Ω over the whole frequency range considered.