Multi Frequency Wideband Microstrip Patch Antenna for Wireless Applications

Abstract

Remarkable equipment development in the field of communication and the growing end user requirement has lifted the need for multi-functional wireless communication devices. Since the antenna is the most basic part of each wireless communication scheme, therefore, multi-functional antennas are looked for to meet up the present day requirements. The antennas are so designed that these could be able to sustain compound functions in a particular single antenna system rather than sustaining one operational frequency. For this reason multiband/multi-frequency/multi-standard antennas can be used basically to lessen the amount of antennas needed for any projected system application. The purpose of this thesis is to investigate novel methods to develop microstrip patch antennas (MPAs) that exhibit multi-frequency/wideband behavior. Because of the rapid advancements in the industry of wireless communication, original and new antenna design structures that could be utilized in more than one single frequency band and those that permit size reduction are in great essential activity. For example, services relating mobile telephony need conveniently transported devices congenial with Global System for Mobile Communication (GSM)/Digital Cellular Service (DCS)/Universal Mobile Telecommunications System (UMTS) technology and the afore mentioned equipment should also colligate the users to Wireless Local Area Network (WLAN) networks established on 2.5 GHz/5 GHz communication standards. Thus, the design of compact antennas suited for these devices is of extraordinary concern. Several techniques have been suggested for the design of radiating elements of this type, the relatively large majority of which are microstrip antennas. An ordinary feature of virtually the whole of the multi-frequency printed elements is that they generally come from an initial patch of common shape which is perturbed in the succeeding stage. Depending upon the method of shape perturbation or disturbance, the development and analysis of multi-frequency