AbstractsEngineering

The problem of phase measurement at microwave frequencies has been investigated and an automatic, recording system developed for use in microwave optics studies. The phase plotter operates at 9.3 Kmc/s and measures phase and intensity of a field continuously along chosen scanning lines. The phase measurement is essentially independent of intensity variations of up to 40 db and the follow-up response during automatic operation is over 90° per second. The accuracy is + 5° in automatic operation and + 2° when operated manually. The system's operation depends on the Homodyne technique. Automatic operation is made possible by the development of a novel modulator using ferrite microwave components.