Performance Analysis of Rectangular Shape Microstrip Patch Antenna for Different Substrates at Different Frequencies

Abstract

Our main thesis work Performance Analysis of Rectangular Shape Microstrip Patch Antenna for different Substrates at different Frequencies. The use of Microstrip Patch Antenna for telecommunication and secret objective has been the incitement of this research. In this work, patch microstrip antenna rectangular shape operating at 2.4 GHz, 900 MHz, 1800 MHz frequency compatible with Wireless mobile technology are designed with Computer Simulation Technology (CST) program. This work declared that, the performance analysis and comparison of four different dielectric constant materials – FR 4, Teflon, polyimide and Polycarbonate suitable to be employed as substrate in microstrip antenna design. The above four selected substrate materials – FR-4, Teflon, polyimide and Polycarbonate have dielectric constant are respectively 2.4, 2.1, 3.5, 2.9. The performance of microstrip patch antenna designs have been analysed and compared in terms of gain, return loss, directivity, VSWR and Efficiency. Main concern of this work is to test the performance of Micro-strip patch antennas with different types of frequencies and different substrates based on the efficiency, voltage standing wave ratio (VSWR), gain, directivity, return loss and size. For each of the same sized antennas designed with the selected patch materials, it is found that they are suitable for the 2.4 GHz band and the best return loss performance is (-10.47db) obtained by using the Teflon substrate and the best antenna efficiency (88%). When using 1800 MHz band the Teflon substrate are the best antenna efficiency (94%) best return loss performance is (-12.20) obtaining by using polycarbonate. On the other hand, antenna efficiency performance was vice versa, that is FR-4 conductive was the worst while the Teflon conductor was the best