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The paper presents theoretical analysis of two-element antenna for ultra-wideband application. Mathematical model of functional power parameters of general multiport array is introduced. Results of computer simulations of different matrices describing matched planar two-element microstrip antenna, power parameters and radiation patterns are described. Problem of broadband matching and radiation of...
The paper presents two planar elliptical antennas for use in ultra-wideband radiocommunication systems: microstrip and stripline antennas. Design procedure of UWB antennas was described. Results of computer simulation and measurements are shown and discussed. Radiation of UWB signals by both antennas was analyzed. A new parameter - UWB antenna transmittance was introduced and used for analysis of...
The paper presents theoretical time and frequency analysis of signals used in modern ultra-wideband (UWB) systems. This analysis is an important part of proposed complex approach to design of UWB antennas. Three popular pulses are described: Gaussian and Rayleigh pulses and UWB wavelet. Different types of impulse modulation used in UWB systems were described and the results of computer simulation...
The time and frequency analysis of ultra-wideband (UWB) signals for radiocommunication systems is presented in the paper. The results of computation are shown. A process of synthesis of the ultra-wideband signals from the spectrum for different parameters is analyzed. The influence of limitations of signals' spectrums over the shape of rebuilt pulses is discussed. Distortions of popular Gaussian and...
A complex approach to design and investigation of the time-domain and frequency characteristics of the antenna, ultra-wideband signals and properties of the radiated field are presented in the paper. A simple pulse ultra-wideband antenna for use in radiocommunication WPAN systems is proposed. Time-domain and the limitation of UWB signals' spectrum are investigated. The electric field radiated in chosen...
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