The allocation of 3.1 GHz to 10.6 GHz spectrum by FCC for ultra-wideband (UWB) communication has motivated the development of UWB antennas, suitable for several applications such as: high data rate terminals (fixed or movable) for multimedia, low data rate system like sensor networks, home entertainment, WLAN, video distribution within cars etc. The sectoral semi-directional antenna with high gain over the ultra wideband has been proposed to improve the system performance by increasing the signal-to- noise ratio and reducing the bit error rate -.
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