The impedance characteristics of a coaxial TEM-line antenna.

Abstract

The coaxial TEM-line antenna is a low-profile, lightweight, simply constructed antenna that can be easily mounted on a wide variety of conducting surfaces. It is a low to medium gain antenna element capable of operation in broadside or frequency scanning modes. This paper presents a method of determining the impedance characteristics of a single flush mounted radiating gap. Several radiation patterns are presented to illustrate beam shape and scanning. The Brillouin or w-B diagram is used to relate the frequency scanning properties to periodic structure theory.