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Structure and characteristics of two-element ultra-wideband antenna

Garbaruk M., Czawka G.

Przegląd Elektrotechniczny

2012

R. 88, nr 10b

309-310

The paper presents results of a computer simulation of a two-element ultra-wideband (UWB) antenna. A computer analysis was made in 6-8.5GHz frequency range, according ETSI. An excitation network was designed as a broadband hybrid. A novel idea presented in the paper is a modification a well-known ideal model of a hybrid using additional T-structure circuit. Frequency characteristics of a two-element antenna and a broadband hybrid were discussed in the paper. The analysis presented in the paper is important for solving various EMD problems.

Artykuł przedstawia wyniki komputerowej symulacji dwuelementowej anteny ultraszerokopasmowej w paśmie ETSI UWB 6-8,5GHz. Zaprojektowany został układ wzbudzenia anteny w postaci ultraszerokopasmowej hybrydy oraz jego modyfikacja z wykorzystaniem dodatkowych obwodów mikropaskowych kształtu T.

Matrix Analysis and Pulse Transmission of Antenna Array for MIMO UWB Systems

Czawka G., Garbaruk M.

International Journal of Electronics and Telecommunications

2011

Vol. 57, No. 1

91-96

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 taking into consideration the coupling between antennas is described. A new approach to a full electromagnetic analysis based on the scattering matrix of the MIMO spatial antenna array is proposed. Functional power parameters for the whole MIMO UWB transmit-receive antenna structure are introduced. Results of computer simulations of different matrices describing a MIMO antenna system and the transmission propagation pulses are presented.