SUMMARY REPORT SURFACE WAVE ANTENNA STUDY PHASE I

摘要

This report contains results obtained from the numerical evaluation of antennas that launch or receive a surface wave. The goal was to determine the most suitable surface wave antenna(s) for the frequency range of 7-11 MHz. The study is based upon application of computer modeling and numerical analysis pro¬cedures to antennas in proximity to ground. Both buried and elevated antennas have been considered. Elementary antennas (loops, dipoles, monopoles) as well as specific antennas (Beverage, Lambda, Yagi) were evaluated both individually and in arrays. The electromagnetic and nonelectromagnetic characteristics of the antenna system important from an overall system viewpoint are discussed. Finally, the relative advantages of the more efficient antennas are presented in the context of the surface wave system requirements and site characteristics.