Dipole antenna structure

Claim 1

A vertical dipole antenna structure comprising, in combination: a vertically extending connector at the bottom of the structure and having a pair of downwardly extending connector elements adapted to interfit with complementary upwardly extending connector elements of a support for the antenna structure, a vertically extending insulating sleeve having its bottom portion rigidly connected to the upper end of said connector and its upper portion rigidly connected to the bottom portion of a vertically extending dipole element-forming sleeve, an insulating housing secured to the upper end of said dipole element-forming sleeve, a conductive dipole element-forming rod anchored at the upper portion of said housing and extending vertically upwardly therefrom, a pair of signal carrying conductors having their lower ends respectively connected to said pair of connector elements and passing through said dipole element-forming sleeve in insulated relation thereto, signal coupling means coupling the other end of said pair of conductors respectively to the inner ends of said dipole element-forming sleeve and rod, said insulating housing having bottom and intermediate portions and a cap portion, a coil support bobbin in said housing on the outside of which bobbin are coils of wire forming said signal coupling means, the bobbin terminating in a conductive end portion at the bottom end thereof to which the upper end of said dipole element-forming sleeve and said coils are physically and electrically connected, the upper end of said bobbin having a conductive end portion thereon to which said dipole element-forming rod and coils are physically and electrically connected, and said cap portion being threadedly securable at the upper portion of said bobbin so as to hold together the assembly of said bobbin and the bottom and intermediate portions of said housing.