The conical monopole antenna includes a conical antenna element having an
apex and a base, a conductive base member coupled across the base of the
conical antenna element and a ground plane antenna element, e.g. a disc
antenna element, adjacent the apex of the conical antenna element. A fold
conductor is coupled between the conductive base member and the ground
plane antenna element. The fold conductor may include at least one
impedance element, such as a resistive element or inductive element. An
antenna feed structure is coupled to the ground plane and conical antenna
elements. The antenna may have reduced gain above a cutoff frequency
being traded for low VSWR below the cutoff frequency to get increased
usable bandwidth. The folded resistive termination is preferential to
driving point attenuation and edge loading, and the conical monopole
antenna provides low VSWR at most radio frequencies.