Abstract
In this paper, we proposed the Ultra Wideband (UWB) for personal communication system. The definition of UWB signals released by the Federal Communications Commission (FCC) opened the way to both impulse and non-impulse UWB signal formats, as reflected within the IEEE 802.15.3a TG, devoted to the definition of a standard for UWB-based high bit rate WPANs. Nowadays wireless communication is widely used efficiently in high-speed data transferring method. So the factors that effected UWB system are required to known. In this research the small distance of wireless system are observed. The experiment frequency from 3-11 GHz and the transfer function of the transitter (TX) and receiver (RX) antennas are done using biconical antennas. The measurements are covered by using a vector network analyzer (VNA) and data are used to evaluate the UWB transmission properties based on the extension Friis's transmission formula. The relative gain, power delay profile and path loss of signals turn on and turn off computer network at Tx and Rx antennas are shown.
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