Abstract

Antenna is an important part of any wireless communication system as it converts the electronic signals (propagating in the RF Transreceiver) into Electromagnetic Waves (Propagating in the free space) efficiently with minimum loss. This paper discusses the performance, characteristics and applications of antennas in modern wireless communication systems. Five different types of antennas are discussed. The basic equations and principles of antenna theory are presented. The characteristics of each type of antenna are discussed. This paper has a selection of antenna applications from the low-frequency ELF system to high frequency wireless applications.