Balun suitable for use throughout the ultra high frequency television bands

Claim 1

A BALUN SUITABLE FOR USE THROUGHOUT THE ULTRA HIGH FREQUENCY TELEVISION BANDS COMPRISING, IN COMBINATION; AN INSULATING NON-MAGNETIC CORE MEMBER HAVING A LONGITUDINAL AXIS AND WINDING PORTIONS SPACED ALONG SAID AXIS; A PAIR OF FIRST AND SECOND CLOSELY SPACED INSULATED CONDUCTORS WOUND ABOUT SAID CORE MEMBER AT ONE OF SAID WINDING PORTIONS IN ONE WINDING SENSE AND SPIRALLING ALONG THE AXIS TOWARDS THE OTHER WINDING PORTION; A PAIR OF THIRD AND FOURTH CLOSELY SPACED INSULATED CON DUCTORS WOUND ABOUT SAID CORE MEMBER AT THE OTHER OF SAID WINDING PORTIONS IN THE SAME WINDING SENSE TO SAID FIRST AND SECOND CONDUCTORS AND SPIRALLING ALONG THE AXIS TOWARDS THE ONE WINDING PORTION, SAID WINDINGS BEING SO DISPOSED AS TO DEFINE INBOARD ENDS ON ONE SIDE OF SAID CORE MEMBER AND OUTBOARD ENDS ON THE OPPOSITE SIDE OF SAID CORE MEMBER; A PAIR OF BALANCED LINE TERMINALS DISPOSED ON SAID ONE SIDE OF SAID CORE ADJACENT SAID WINDING PORTIONS, RESPECTIVELY; MEANS ELECTRICALLY CONNECTING SAID SECOND AND THIRD CONDUCTORS ADJACENT SAID BALANCED LINE TERMINALS; MEANS CONNECTING SAID FIRST AND FORTH CONDUCTORS, RESPECTIVELY, TO SAID BALANCED LINE TERMINALS; A PAIR OF UNBALANCED LINE TERMINALS DISPOSED ON SAID OPPOSITE SIDE OF SAID CORE ADJACENT SAID WINDING PORTIONS, RESPECTIVELY; AND MEANS CONNECTING THE OTHER END OF THE FIRST AND THIRD CONDUCTORS TO ONE OF SAID UNBALANCED LINE TERMINALS AND THE SECOND AND FOURTH CONDUCTORS TO THE OTHER OF SAID UNBALANCED LINE TERMINALS.