Abstract
A study of time domain characteristics of band-notched ultrawideband (UWB) antennas is presented. Two parameters - the correlation factor and the pulse width stretch ratio (SR) are resorted to estimate the time domain characteristics. The high correlation and the values of SR show that the previously proposed antennas are suitable for short-range UWB impulse radio. Ringing distortion of receiving antenna signals caused by the band-notched characteristics is discussed. Measured magnitudes of transfer function and group delay are exhibited. The primary study in this communication is to demonstrate the good performances of the previously proposed band-notched UWB antennas in short-range UWB signal transmission, propagation and reception in time domain.
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