Design & analysis of 1x4 microstrip patch antenna for 2.4 GHz application

Abstract

Microstrip patch antennas are the most useful antennas for the present trend of applications in communications. The well known advantageous mechanical characteristics (low pro le, light weight, planar but conformal to non-planar structures, easy to fabricate), exibility in terms of electromagnetic parameters (radiation pattern, gain, impedance, polarization) and low cost are the key features of the success of such antennas. To meet the requirements of aircraft, spacecraft, satellite and missile applications where size, weight, cost, performance, ease of installation, low pro le and easy integration to circuits, high e ciency antennas are required. Microstrip antenna arrays are most suitable for such applications. In this paper circular patch antenna arrays are designed for the application of RADAR at 2.4GHz. Single patch antenna is designed using probe feeding technique. Arrays of 1X4 are designed using edge feeding technique. The antenna arrays are designed and simulated on FR4 substrate and excited using probe and edge feeding techniques. The antenna arrays are simulated using the High Frequency Structure Simulator (HFSS) software version v17.2 and the parameters like gain, return loss, radiation pattern and VSWR are evaluated at that frequency.