Frequency and Pattern Reconfigurable Antenna using Electromagnetic Band Gap Structure

This paper presents the use of electromagnetic bandgap (EBG) structure for frequency and pattern reconfigurability. The first structure is the pattern and polarization reconfigurable antenna for beam-steering configurations. The proposed antenna consists of a group of EBG structure to control the pattern reconfigurability. The second application is the use of EBG for band stop rejection where the EBG is designed to suppress and control the signal transmission to the antenna. In this concept the UWB antenna is designed and the EBG structure is used to stop the signal transmission. The EBG is designed at different sizes. The results showed that at certain EBG structure the signal transmission was prevented from propagating to the UWB antenna and no radiation occurred at that particular frequency.