Abstract :
The graphical method of measuring a reflection coefficient through a junction, originated by Deschamps, is used to determine the transmission efficiency of a surface wave at a discontinuity. The radiations excited by the surface wave at a discontinuity in surface reactance, and at an edge of a metallic strip above a reactive surface, are investigated. It is shown that the discontinuities cause the radiation of an appreciable fraction of the incident power. A matching step at the discontinuity in surface reactance is found to have no effect on the excitation of radiation. Further, it is found that, compared with the radiation excited at the edge of a metallic strip, the radiation excited at a discontinuity in surface reactance is confined to a narrower angle above the surface.
