REVIEW PAPER ON COMPARATIVE ANALYSIS OF MICROSTRIPLINE AND COAXIAL FEEDING TECHNIQUES FOR DIFFERENT MICROSTRIP PATCH ANTENNAS

G M Pushpanjali, A B Pratima, D Ashwini, V H Vidyashree

Abstract: In this paper, performance analysis of microstrip line feeding and coaxial feeding is made for rectangular and square patch antennas designed for same frequency. The square patch antenna resonates at 3.4GHz and 3.42GHz and the rectangular patch antenna resonates at 3.42GHz and 3.45GHz frequencies. The design, model and simulation of two different types of microstrip patch antennas have been studied. The frequency operation for square patch antenna with microstipline feeding technique gives the impedance bandwidth of 0.91% which is 2.25% more when compared to coaxial feeding. Similarly the frequency for rectangular patch antenna with microstripline feeding technique also studied. For this model the impedance bandwidth shown here is 2.45%. But with coaxial feeding technique the rectangular patch antenna shows bandwidth enhancement of 17.96%. The variation in the resonating frequency, return loss, bandwidth and gain of proposed antennas due to the different feeding technique using different shape of radiating patches has been discussed and presented. These antennas find applications in WLAN and Wi-Fi connectivity.

Keywords: Coaxial feeding technique, equilateral triangular microstrip antenna, microstripline feeding technique, microstrip patch antenna

DOI: https://doi.org/10.15623/ijret.2014.0315186