Buoy antenna

An antenna for providing reception at a desired frequency, fo, dimensioned according to an associated wavelength, λg, comprising:

• a cylindrical hub having a solid body with a top and a bottom, a vertical height H of said cylindrical hub being equal to approximately 2.8 λg and a diameter of said cylindrical hub being approximately H;
• a first conical cavity in the top of said cylindrical hub, said first conical cavity having a sidewall length approximately 0.51 H at approximately 46° from a vertical axis of said cylindrical hub;
• a second conical cavity in the bottom of said cylindrical hub, said second conical cavity having a sidewall length approximately 0.51 H at approximately 46° from the vertical axis of said cylindrical hub;
• wherein each of said first conical cavity and said second conical cavity has a truncated apex having a diameter of approximately 0.13 H and a portion of said solid body between said first conical cavity and said second conical cavity having a thickness of approximately H/18;
• and
• wherein each of said first conical cavity and said second conical cavity are plated with a conducting material;
• a plurality of vanes attached at an angle to an external wall of said cylindrical hub, each vane of said plurality of vanes having a thickness of approximately H/6, a width of approximately 0.78 H, and a length of approximately 1.22 H;
• and
• a transmission line attached to plated portions of said first conical cavity and said second conical cavity.