An aid for the optimum design of antenna systems for very low frequencies.
Gobbel, James Thomas.
Cooper, Paul E.
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This thesis will be concerned with the antenna systems used for high power transmitters operating at Very Low Frequencies (10-20 kHz). General problems involved in antenna systems, from the viewpoint of their equivalent electrical circuits, will be discussed. The required matching networks will be covered and and their relative performances indicated. A brief survey of signaling methods commonly used at VLF in included, and the relation between these methods and the aerial systems is discussed. A computer program (VLFANT) will be developed for a typical VLF aerial installation which may be used in the selection of component values for optimum operation. Written in FORTRAN IV, it is for use on a high-speed computer. Circuit parameter values may be changed at will, and the system response using different network arrangements easily determined. With this program as a design tool proposed systems may be completely evaluated and the proposed changes to operational systems easily studied.
Approved for public release, distribution is unlimited
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