Esmail Nasrabadi - Faculty of Electrical and Computer Engineering Semnan University
Pejman Rezaei - Faculty of Electrical and Computer Engineering Semnan University

This paper presents a novel radiation pattern reconfigurable antenna using a central circular patch and four parasitic patches. The radiation pattern of the proposedantenna can changed into three modes.Changing the mode of antenna is done by four pin diode switches that are located in gaps of parasitic rectangular patch .by means of simple electrical arrangement a short or open circuit can be provided in the gap. The designed antenna works in 5.8GHzfrequency bandand its bandwidth is 2.2 GHz.

Reconfigurable antenna, pattern, parasitic ring, pin diode