UWB RF Front end system

Abstract

This is the project report on the Final Year Project titled “UWB RF Front End System”. Micro strip patch antennas are gaining popularity day by day because they are very compact in size having low weight and easy for integrating with devices. Micro strip patch antennas can be designed in different shapes and configurations for different characteristics of band such as dual-band, multi-band, wide- band and ultra wide band for GSM, WLAN, WI-Max and other wireless technologies. Ultra wide band antennas actually enable low power consumption, high data transmission rates in wireless communication application. In this project a simple UWB micro strip-fed antenna, Wilkinson power divider, and Microwave filters are proposed. The antenna is composed of circular patch converted into key like shape with help of slits and slots in order to improve results, and a partial ground plane having slit. Using one antenna for each individual band is costly and space taking, instead we are designing a front-end system for multiple bands where these bands are separated by using microwave filters. We are combining different specifications in one system. The main emphasis was to design an antenna which covers the bandwidth of ultra wide band applications such as WI-Max, WLAN, and Satellite C Band etc. This patch antenna is designed and simulated in Ansoft HFSS 11 (High Frequency Structure Simulator).In many devices there are two or three different antennas are used for different applications, hence they are space taking and expensive .This design will combine different specifications in one system such as by using one system we will able to get Bluetooth, WIMAX, WLAN and satellite C band signals. The simulated and measured results show that system is working properly.