An antenna comprising first and second antenna elements, a center conductor, and a dielectric. The first antenna element is configured to be electrically connected to an outer conductor of a coaxial cable. The center conductor is electrically connected to the second antenna element and configured to be electrically connected to an inner conductor of the coaxial cable. The dielectric is disposed around the center conductor so as to separate the center conductor from the first antenna element. The first antenna element is shaped to gradually surround the dielectric and the center conductor over a length of the first antenna element so as to form a balun, integrated into the first antenna element, that is configured to gradually transform an unbalanced signal in the coaxial cable to a balanced signal that is characteristic of a two-conductor transmission line.
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