Absrract-This paper renews the operating principles of four types of reciprocal latching ferrite phase shiftem and compares them with respect to normalized phase shift and RF iasertioo loss The effects of frequency and temperature on the phase shift are a h discussed. Comideratioo is given to size and weight, as well as RF power hading, important factorsin an array intended for field-eoviroement amditions. Partially switched c d g u r a t i o m lsiug quasi-ciiarly polarized normal modes are shown to have the most desirable performance characteristics of the phase shifters stodi ed. Such structures can have a simple geometry that is compatible with lowcost m a s production, and can also be adapted to computercoatrolled compensation of changes in operating temperature and frequency.
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