16-3 The Ladder Antenna for Digital Terrestrial Broadcasting

Abstract

In a Two-Quadrangle Loop Antenna with a reflector it investigated about input impedance, radiation pattern, and power gain. It aims at development of the antenna to acquire the following features in a wide frequency band. 1, Input impedance adjustment can be easily taken. 2, It is high power gain. 3, When multiple arrangement is carried out, Horizontal radiation pattern becomes omnidirectional pattern.