PHASE SHIFTER. STUDY PROGRAM (NON-FERRITE)

Two general phase-shifting techniques were investigated, both of which employ semiconductor elements. The first approach is the step or incremental phase-shifting device which provides for discrete changes in phase. The second phaseshifting approach is a continuously variable one which provides for a greater flexibility in phase control. Both the semiconductor material and the circuit problems involved in each of these 2 approaches were further explored. The present study results indicate that both the desired phase-shifting characteristics as well as powerhandling capabilities can be reached. Phase shifters have now been built for L-band which, for the incremental type, can handle peak powers in excess of 10 kw, and for the continuous type can handle 1 kw peak power. Author