This paper deals with the mathematical model of functional power parameters based on the singular expansion of complex normalized scattering matrix of the antenna array. Problem of broadband matching of the antenna array is discussed. Results of computer simulation of different matrices and power parameters of twoelement antenna for ultra-wideband (UWB) signal radiation is presented.

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The time and frequency analysis of ultrawideband (UWB) signals for radiocommunication systems is presented in the paper. The results of computation are shown. A process of synthesis of the ultrawideband signals from the spectrum for different parameters is analyzed. Transmission of UWB signals through an ideal radio channel using single Gaussian pulse as an example was presented. Time and frequency analysis of ultrawideband signals is useful for EMC issues.