JWCN_V4_N2_RevP1 T.S. Sheriba M. Murugan Journal On Wireless Communication Networks 2320 - 2351 4 2 32 42 Frequency Reconfiguration, PIN Diodes, Varactor, Micro-Electro-Mechanical System(MEMS), Optical Antennas, Holographic Antennas, Ultra Wideband Antennas, Tunable Materials, Multipixel Antenna, Slot Antennas, Mechanically Reconfigurable Antennas The need for a simpler system that satisfies multiple requirements and standards has increased due to the rapid progress in the field of communication. The development of reconfigurable antennas has turned out to be a boon to such systems due to its dynamic characteristics, simple structure, light weight, better gain and radiation properties. The fast growing wireless technologies demands a highly complex system to satisfy the standards. This hardware complexity has posed a challenge to the research field in a way to make simple structures with effective characteristics. The researchers have presently succeeded in transforming these complex hardwares like filters at front end into simple antenna structures. This survey concentrates on various research works carried out in the field of frequency reconfiguration in microstrip antennas that has considerably reduced the complexity in structures and thereby the antenna size. Keywords: Frequency Reconfiguration, PIN Diodes, Varactor, Micro-Electro-Mechanical System(MEMS), Optical Antennas, Holographic Antennas, Ultra Wideband Antennas, Tunable Materials, Multipixel Antenna, Slot Antennas, Mechanically Reconfigurable Antennas. July - September 2015 Copyright © 2015 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=3588