Capacitively loaded thin cylindrical antenna

Extensive experimental and theoretical results are presented for thin cylindrical antennas with lumped capacitive loadings along their length. The capacitive loading is in the form of a narrow gap between two sections of the antenna. Experimental curves for the gap capacitance against gapwidth are presented, and these values are used in calculating current distribution along the antenna and its admittance. The agreement between experimental and theoretical results indicates that, with the construction proposed, it is possible to make a capacitively loaded antenna that has properties quite close to those predicted by the theory.