Automatic Measurement of Amplitude and Phase of Microwave Signals Over Broad Frequence Range

An automatic microwave vector-voltmeter system for accurate characterization of microwave signal in terms of its amplitude and phase operating over broad frequency range is described. Basic principles of the system operation along with the particularities related to both hardware and software practical solutions are also discussed. The results presented in the paper show that the accuracy of the measured signals amplitudes were better than 1 dB, and the phase were better than 2 deg. These have been measured over the frequency range from 8 to 18 GHZ.