H. Iida, T.Y. Wu, NMC–NMIJ bilateral comparison of millimeter-wave attenuation in WR-15 waveguide band at 50GHz and 54GHz, In Measurement, Volume 82, 2016, Pages 155-160, ISSN 0263-2241, https://doi.org/10.1016/j.measurement.2015.12.037. (http://www.sciencedirect.com/science/article/pii/S0263224115006971) Keywords: Bilateral comparison; Millimeter-wave attenuation; Attenuation standard; Uncertainty estimation; Degree of equivalence
Abstract:
This paper reports on a bilateral comparison of millimeter-wave attenuation in WR-15 waveguide band between the National Metrology Institute of Japan (NMIJ) and the National Metrology Centre, A∗STAR (NMC). Different types of attenuation measurement systems were independently developed at both laboratories. The systems are based on a stabilized single-channel intermediate frequency (IF) substitution method at NMIJ, and a dual-channel audio frequency substitution method at NMC. A comparison was carried out at 50 GHz and 54 GHz using a programmable step attenuator fitted with precision coaxial to waveguide adaptors as a traveling standard. Good agreement of the measurement results between both laboratories was verified in the attenuation range up to 60 dB.