is understood to operate as an electromagnetic field ground plane but it is also understood to operate as a support structure to enable the securing of the dipole radiators 6 via non conductive or dielectric supports 7 the dipole radiators 6 are shown in fig1 as being composed of pairs of u201c bowtie u201d shaped elements having an u201c upper u201d pair configuration i e right hand side of fig1 and a u201c lower u201d pair configuration i e left hand side of fig1 the tapered shape of the elements of the bowtie configuration enables an increase in the operating bandwidth of the dipole radiators 6 as compared to conventional non tapered dipole radiators in the exemplary embodiment described herein the elements of the dipole radiators 6 are separated by approximately 5 inches however depending on design objectives including frequency or beamwidth considerations the separation can be adjusted without departing from the spirit and scope of the invention the set of dipole radiators 6 in each upper and lower pair is separated from its dual by a capacitive gap 8 whose separation distance between opposing surfaces of the dipole radiators 6 is adjustable the gap 8 is augmented by a raised lip to form an increased surface area between the set of dipole radiators 6 for higher reactance sensitivity as is well known in.