Miniaturization reconfigurable wide slot antenna for multi-mode wireless communication applications

In this paper, a wide slot antenna with reconfigurable characteristic for ultra wideband (UWB) wireless communications applications has been proposed. The proposed UWB antenna has three notch band functions which can reduce or avoid potential electromagnetic interference (EMI) between UWB and existed narrow band communications systems. The reconfigurable characteristic is achieved by using four switches which can make the proposed antenna work in multiple modes. By controlling the ON/OFF of the switches, the designed antenna can be used as UWB antenna, four band antenna, tri-band antenna, dual-band antenna and notch band UWB antenna. The notch functions and switchable characteristics are discussed in this paper. The experimental results show that the proposed reconfigurable antenna can be well used for multi- mode wireless communication applications.