Design of a Micro Strip Patch Antenna to Minimize Return Loss for Wi-MAX Application

Abstract: This Worldwide Interoperability for Microwave Access (Wi-MAX) is a technology which maintains group of telecommunications protocols that enables final prop of delivering connectivity from a communication provider to customer and facilitates broadband access. Though broadband Internet access is not available in the inhabited and rural blackout areas, Wi-MAX can potentially eradicate this problem by using an antenna with reasonable bandwidth and high gain. Microstrip patch antenna is one of the most suitable candidates for this purpose and it is very popular among Local Area Network (LAN), Wide Area Network (WAN) and Metropolitan Area Network (MAN), technologies due to their advantages such as low cost, light weight, compatibility with integrated circuits, low volume and easy to install on rigid surface. This paper presents the design of a rectangular microstrip patch antenna operating at 3.5 GHz to achieve maximum bandwidth and the performance of the antenna at different operating frequencies is analyzed using Ansoft software to obtain minimum return loss for Wi-MAX application and is found to be -8.16 dB. The transmission line model is used for analysis.

Keywords: Wi-MAX, Microstrip Patch Antenna, Antenna Design, Ansoft Software, Return Loss