Abstract
Application of conventional antenna phase measurement methods becomes increasingly difficult above 100 GHz. Main problems are the complexity of measurement set-ups and errors caused by the flexible cables or rotary joints needed in the system. To overcome these problems a novel differential phase measurement method has been developed. It was used to measure phase center positions and phase patterns of two corrugated horns at 105-115 GHz and 176-190 GHz. Good agreement between the measured values and theoretical values, calculated with the modal matching technique, was obtained.
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