Low Profile and Wide bandwidth Characteristics of Top Loaded Monopole Antenna with Shorting Post

Abstract

Demands on electrically small antennas are increasing in the field of mobile communications systems, such as satellite navigation systems, cellular systems and wireless LANs. In these communications systems, the antenna radiation pattern is required to be uniform radiation pattern in horizontal plane. A monopole antenna is most popular antenna for such applications because of its simple structure. Currently, in these applications, antennas with low profiles and wide frequency band characteristics are strongly desired.