Square waveguide nonreciprocal differential phase shifter with oppositely biased ferrites

Claim 1

A NONRECIPROCAL DIFFERENTIAL PHASE SHIFT DEVICE COMPRISING: A SINGLE SECTION OF SQUARE WAVEGUIDE; BODIES OF FERROMAGNETIC MATERIAL DISPOSED ALONG THE INSIDE OF TWO OPPOSING WALLS OF SAID WAVEGUIDE; FIXED MAGNETIC FLUX FIELD MEANS MAGNETIZING SAID BODIES IN DIRECTIONS SUBSTANTIALLY PERPENDICULAR TO SAID OPPOSING WALLS TO INTERACT IN A NONRECIPROCAL MANNER WITH A WAVE PROPAGATING THERETHROUGH, THE DIRECTION OF MAGNETIZATION OF OPPOSING BODIES BEING REVERSED IN ONE-HALF OF SAID WAVEGUIDE WITH RESPECT TO THE REMAINING HALF; PLURAL E AND H PLANE PORT HYBRID INPUT MEANS LAUNCHING WAVES INTO ONE END OF SAID SQUARE WAVEGUIDE POLARIZED IN DIRECTIONS FORMING SUBSTANTIAL ANGLES WITH ALL THE WALLS OF SAID WAVEGUIDE; AND PLURAL E AND H PLANE PORT HYBRID OUTPUT MEANS AT THE OTHER END OF SAID WAVEGUIDE CONDUCTING WAVES POLARIZED SUBSTANTIALLY PARALLEL TO SAID LAUNCHED WAVE, SAID INPUT AND OUTPUT MEANS BEING SYMMETRICALLY DISPOSED ABOUT AT LEAST TWO TRANSVERSE PLANES THROUGH THE CENTER OF SAID WAVEGUIDE SECTION.