Multiple frequency band antenna

A multiple frequency band antenna for coupling to a feedline comprising:

• a high permeability core;
• a coaxial network including
• first and second input terminals for connection to said feedline, and
• first and second coaxial cables each comprising an electrically conductive shield having first and second ends and a center conductor having first and second ends, said first coaxial cable being wrapped about said high permeability core and having the first end of its center conductor and its shield connected to said first and second input terminals, the second end of the center conductor of said first coaxial cable being connected to the first end of the center conductor of said second coaxial cable, the conductive shields of said first and second coaxial cables being connected together;
• and
• first, second and third conductive radiation elements, said first element being coupled to the junction between the first and second ends of the center conductors of said first and second coaxial cables respectively, said second element being coupled to the second end of the center conductor of said second coaxial cable and said third element being coupled to the junction between the shields of said first and second coaxial cables, said second coaxial cable having an electrical length equal approximately to an integral multiple of one-half wavelengths at the frequency at which said first and second elements are half-wave resonant, said high permeability core decoupling energy in said antenna from the exterior of said feedline.