Gain enhancement of linear four element microstrip antenna array

Abstract

Antennas play an efficient role in modern communication devices and systems in creating a better transmission link between the transmitter and receiver.The type and performance of antennas depend on the excitation method and the transmission lines employed.The functioning of antennas particularly the microwave antennas is primarily based on electromagnetic theory.A proper and meticulous design of antennas is very much required to reduce the complexities involved in system performance and increase the efficiency of the rate of transmission and reception on the communication link [1-5].In the microwave frequency range the most preferred transmission line employed is the microstrip line as the amount of parasitic inductance and capacitance produced is very much lesser than the normal lumped elements.The structure of microstrip antenna is similar to that of microstrip line.In its simplest configuration, a microstrip antenna is a printed type of antenna which is made of a dielectric substrate placed between the radiating patch and finite ground.*Author for correspondence 2.Conventional antenna arrayThe conventional antenna array is designed at the frequency of 6 GHz.The height of the substrate is 1.6 mm.The conventional microstrip antenna array (CMAA) consists of four identical radiating patches fed by corporate feeding technique.Each of the radiating patches is rectangular in shape and the dimensions are 15.73 mm×11.76mm.The adjacent