Orthogonal hybrid t for microwave waveguides

Claim 1

A WAVE GUIDE JUNCTION COMPRISING FIRST AND SECOND PARALLEL RECTANGULAR GUIDES HAVNG A COMMON NARROW WALL, A THIRD RECTANGULAR GUIDE BRANCHINGLY CONNECTED TO ONE PAIR OF THE ADJACENT NON-COMMON COPLANAR WIDE WALLS OF SAID FIRST AND SECOND GUIDES AT THE SAME ENDS AND ELECTRICALLY COMMUNICATING WITH AND OPENING INTO SAID FIRST AND SECOND GUIDES, SAID THIRD GUIDE POSITIONED WITH RESPECT TO SAID FIRST AND SECOND GUIDES TO PROPAGATE ONLY TRANSVERSE ELECTRIC WAVES MUTUALLY OUT-OF-PHASE IN SAID FIRST AND SECOND GUIDES, A FOURTH RECTANGULAR GUIDE BRANCHINGLY CONNECTED TO THE REMAINING PAIR OF THE ADJACENT NON-COMMON COPLANAR WIDE WALLS OF SAID FIRST AND SECOND GUIDES AT THE SAME SAID ENDS AND ELECTRICALLY COMMUNICATING WITH AND OPENING INTO SAID FIRST AND SECOND GUIDES, SAID FOURTH GUIDE POSITIONED WITH RESPECT TO SAID FIRST AND SECOND GUIDES TO PROPAGATE ONLY TRANSVERSE ELECTRIC MUTUALLY IN-PHASE IN SAID FIRST AND SECOND GUIDES, SAID THIRD AND FOURTH GUIDES EXTENDING IN OPPOSITE DIRECTIONS FROM SAID ENDS OF SAID FIRST AND SECOND GUIDES ALONG A COMMON AXIS SUBSTANTIALLY PERPENDICULAR TO THE AXES OF SAID FIRST AND SECOND GUIDES, AND A COMMON CONDUCTIVE CLOSURE FOR SAID ENDS, SAID COMMON WALL TERMINATING A DISTANCE AWAY FROM SAID CLOSURE TO PROVIDE AN OPEN REGION COMMON TO ALL SAID GUIDES, SAID COMMON REGION BEING TRAVERSED BY SAID COMMON AXIS, THE WIDE DIMENSION OF SAID COMMON REGION BEING PROGRESSIVELY REDUCED, FROM THE TERMINATION OF SAID COMMON WALL TO SAID CLOSURE, TO PROVIDE THAT THE TE02 MODE SUBSTANTIALLY WILL NOT PROPAGATE IN SAID COMMON REGION.