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This paper presents a theoretical matrix analysis of antenna structure consisting of two double-element planar antennas for ultra-wideband (UWB) application in 2*2 MIMO indoor communication systems. The structure and characteristics of planar two-element UWB antenna are presented. Two matrix models of MIMO antenna system are represented in the paper. A standard MIMO signal transmission matrix without...
Praca dotyczy problemu binarnego sterowania układu automatycznego dopasowania dowolnych obciążeń zespolonych w szerokim paśmie częstotliwości. Omówiono strukturę układu dopasowania oraz kwantowanie i kodowanie zmiennych wartości elementów układu. Przedstawiono modele elementów, makroelementów oraz całego układu dopasowującego z uwzględnieniem strat i parametrów pasożytniczych. Opracowano oprogramowanie...
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...
This paper deals with the mathematical model and properties of a new scattering matrix of given antenna array normalized to complex multiport impedance matrix of generators. The introduced scattering matrix is described a matching problem for a connection of array with multiport beamformer. The scattering parameters are based on eigenvalues and eigenvectors of the antenna multiport matrices. As shown...
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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