Frequency Reconfigurable UWB Antenna with PIN Diodes

In this book a compact UWB frequency reconfigurable antenna with bevel shape using PIN diodes is presented. This antenna consists of two rectangular patches and DGS in the ground plane. Here these two rectangular patches are connected by using PIN diodes which are the key factors for achieving frequency reconfigurability. The ON and OFF state of diodes here enables and disables different frequency band notches and hence reconfigurability is achieved. This antenna is designed for multi band like WLAN Wi-Fi GSM Wi-MAX GPS and Bluetooth. The antenna structure proposed has VSWR below 2 and S11 less than -10db. The proposed antenna might have applications in wireless technological systems for multi band application.