INPUT IMPEDANCE AND RADIATION EFFICIENCY CHARACTERISTICS OF VLF TRAILING-WIRE ANTENNAS AND VLF SIDE-LOADED TRANSMISSION-LINE ANTENNAS
NEW MEXICO UNIV ALBUQUERQUE
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Presented is a comparison in free space of input impedance and radiation efficiency characteristics of two types of radiating structures which have been proposed for use as airborne VLF antennas Namely, the single trailing-wire antenna and the side-loaded transmission-line antenna. From the theory of side-loaded transmission-line antennas derived by R. W. Kulterman, input impedance, radiation efficiency, and side-loaded voltage drops are calculated for examples of three types of transmission-line antennas. Some general comparisons are made between the efficiency and impedance characteristics of training-wire antennas and transmission-line antennas. Some advantages and disadvantages of both types of antennas are given.
- Electrical and Electronic Equipment
- Radiofrequency Wave Propagation