Multiple reflection error analysis for planar near field measurement in time domain

Multiple reflection signals between the probe and the antenna is always ignored in frequency domain near field measurement, which can be reduced by technique such as time gate in the time domain near field measurement sometimes. There are few articles to study about influence of the multiple reflection error affecting the result of the test for it is difficult to determine multiple reflection signals in the frequency domain. In this paper multiple reflection signals is studied by analyze the signals in the port of antenna under test (AUT). The multiple reflection signals with different probe in different position are shown, and then influence of each parameter of probe is presented.