Asia-Pacific Conference on Communications
The Waveform Distortion Due to Antennas on Transmission Loss of Ultra Wideband Impulse Radio
Sathaporn Promwong, Jun-ichi Takada,
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In this paper, we evaluated the transmission gain of ultra wideband radio by using the Friis’ transmission formula. However, it is not directly applicable to ultra wideband impulse radio (UWB-IR) transmission systems. This paper presents the link budget evaluation formula in the term of transmission gain for the UWB-IR systems that takes into account the transmitted waveform, its distortion due to the antennas, the channel and the correlation receiver. Since the antennas are significant pulse-shaping filters in UWB-IR, the various kinds of the antennas are experimentally examined, especially focused on the effect of the received signal and the isotropic template waveforms.