International comparison GT-RF 75 A 4: reflection coefficient in 14 mm/50 /spl Omega/ coaxial line at 0.5 GHz, 3 GHz and 7 GHz

The results are presented of an international comparison of measurements of the complex reflection coefficient in the G 900-14 mm/50 /spl Omega/ coaxial line technique at 0.5 GHz, 3 GHz and 7 GHz in which eleven national laboratories of metrology participated. The standards showed very small drifts of the reflection coefficient over a period of nine years. With few exceptions, good agreement between the mean values reported by the various participants is observed.<
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