Suppressed-radiation antenna

Claim 1

A SUPPRESSED-RADIATION ANTENNA COMPRISING AN ELONGATED VERTICAL CONDUCTOR, RADIATION SUPPRESSORS SURROUNDING THE CONDUCTOR AT SPACED INTERVALS, THE PORTIONS OF THE CONDUCTOR BETWEEN THE SUPPRESSORS BEING OF SUBSTANTIALLY A HALF-WAVELENGTH, A FEED POINT AT THE LOWER END, A CONICAL GROUND-PLANE STRUCTURE WITH AN UPWARDLY FACING VERTEX AT THE LOWER END FORMING AN ANGLE OF FROM 15* TO 45* WITH THE HORIZONTAL, A TERMINATION AT THE UPPER END OF THE CONDUCTOR IN THE FORM OF A CONICAL SURFACE EXTENDING UPWARDLY AND OUTWARDLY AT AN ANGLE OF FROM 15* TO 45* FROM THE AXIS OF THE ANTENNA, CONDUCTING TUBES SURROUNDING THE CONDUCTOR BETWEEN SUPPRESSORS AND SHORTED AT THEIR ENDS TO THE CONDUCTOR TO FORM ENLARGEMENTS OF THE CONDUCTOR, SUCH ENLARGEMENTS BEING SPACED FROM ADJACENT SUPPRESSORS BY A DISTANCE AT LEAST EQUAL TO THE DIAMETER OF THE RESPECTIVE SUPPRESSORS, AND AT LEAST ONE RIGID INSULATING SLEEVE BRIDGING THE GAPS BETWEEN THE ENLARGEMENTS AND THE SUPPRESSORS TO REINFORCE THE EXPOSED UNENLARGED PORTIONS OF THE CONDUCTOR.