Coaxial Feed MIMO Patch Antenna WI-Max Wireless Application at 4.6 GHz Frequency

Abstract

The field of mobile and wireless communication is growing at very fast rate covering manytechnical areas. Wireless local area network (WLAN) and Worldwide Interoperability for Microwave Access (WiMAX) technology is most rapidly growing area in the modernwireless communication. This gives users the mobility to move around within a broadcoverage area and still be connected to the network. This provides greatly increased freedomand flexibility. For the home user, wireless has become popular due to ease of installation, and location freedom. Among wireless devices antenna is quite important component. So,there is continuously increasing requirements of efficient and high performance antenna. Thefeatures of antenna which every technology requires are light weight, small in size and lowcost etc. Another important desired properties of antenna are wide bandwidth and resonant atmultiple frequency.

Next Generation devices have also more than one application embedded in single device soantenna supporting more than one band is required and multiband operation of antenna isanother challenge. Almost all these requirements can be fulfilled by Microstrip patchantenna.

The main objective of this report is to design Coaxial Fed Dual band Microstrip antennas forWiMAX applications using four rectangular antennas.The designed antennas resonate at two frequencies 2.4GHz, 4.6GHz and 5.5GHz. Thebandwidth is also increased upto a sufficient level by having slots in the patches. The variousparameters like return loss, gain, radiation pattern and bandwidth have beenstudied and plotted for each simulated antenna. The parametric study of each of the designedantenna is also done. The simulated results of the effect of the various parameters like lengthof the patch, location of the feed point and position of the slot are also shown.