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An accurate radio-frequency and microwave attenuation-measurement technique with a small mismatch uncertainty for continuous-frequency application has been developed by shifting the phase characteristics of the multiple reflected signals. A loss-measurement system in four different phase networks is set for this purpose by introducing two low-reflective lines (airlines) where the phase-shift values...
An accurate RF attenuation measurement, with small mismatch effect, is achieved without source and load being matched to the line impedance. Insertion loss measurements to the DUT and to the DUT fitted by quarter-wavelength lines are carried out, then the attenuation is obtained simply, unrelated to the source and load reflection coefficients. Experiment results on two 20-dB attenuators at 11 GHz...
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