Optimizing the Phase Accuracy of the PE44820 Phase Shifter

The PE44820 8-bit RF digital phase shifter is capable of maintaining excellent phase and amplitude accuracy from 1.7–2.2 GHz. However, the accuracy can be improved by using the phase accuracy optimization bit with a programming lookup table. This application note demonstrates the improvement in RMS phase error performance based on collected data. The examples indicate the possibilities of phase accuracy improvement over narrow or broadband applications, as well as frequencies beyond the PE44820’s normal operating range.