Double probe near field scanner, a new device for measurements in time domain

A double probe near field scanner for measurement in time domain is presented in this paper. The advantages of measurements in time domain compared with measurements in frequency domain are time efficiency and the simplified capture of frequency hopping signals. The double probe set-up allows measurements of the absolute value of the field strength as well as of the phase. It is also possible to measure occasionally appearing transient pulses. This allows not only the representation of field strengths on the measurement plane but also the illustration of wave propagation or radiation in form of an animated picture sequence. Results of various measurements are shown in this paper.