NMC–NMIJ bilateral comparison of millimeter-wave attenuation in WR-15 waveguide band at 50 GHz and 54 GHz. (March 2016)

• Record Type: Journal Article
• Authors: Iida, H.; Wu, T.Y.
• Is Part Of: Measurement. Volume 82(2016:Mar.)
• Page Start: 155
• Page End: 160
• Publication Date: 2016-03
• Subjects: Bilateral comparison -- Millimeter-wave attenuation -- Attenuation standard -- Uncertainty estimation -- Degree of equivalence; Weights and measures -- Periodicals; Measurement -- Periodicals; Measurement; Weights and measures; Periodicals; 530.8
• DOI: 10.1016/j.measurement.2015.12.037
• Languages: English
• ISSNs: 0263-2241

Abstract

Highlights: Attenuation measurements in WR-15 waveguide band were verified between two NMIs. The attenuation measurement systems of each NMI are based on different principles. A programmable step attenuator is used as a traveling standard at 50 GHz and 54 GHz. The degree of equivalence of the NMI standards is analyzed. The results show good agreement within their expanded uncertainties. 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.