A wideband smart antenna employing spatial signal processing

• Autorzy: Uthansakul M. , Białkowski M. E.
• Języki publikacji: EN

Abstrakty

EN

A smart antenna with capability of beam steering in azimuth over a wide frequency band using only spatial signal processing is presented. Filters and tapped-delay networks employed in conventional wideband linear arrays are avoided by using a two-dimensional rectangular array structure. In this array, only constant real-valued weighting coefficients, realized with amplifiers or attenuators, are used to form a desired radiation pattern. In order to estimate direction of arrival of a wideband signal, the MUSIC algorithm in conjunction with an interpolated array technique is applied. In the interpolated array technique, a composite covariance matrix is generated, which is a simple addition of covariance matrices of narrowband virtual arrays, being stretched or compressed versions of a nominal array. A working prototype of this wideband array is presented. Its operation is assessed via full EM simulations and measurements.

Słowa kluczowe

EN

direction estimation; null steering; wideband beamforming; wideband smart antenna; wideband antenna

• Wydawca: Instytut Łączności - Państwowy Instytut Badawczy
• Czasopismo: Journal of Telecommunications and Information Technology
• Rocznik: 2007
• Tom: nr 1
• Strony: 13--17
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Uthansakul M.

autor

Białkowski M. E.

• School of Information Technology, and Electrical Engineering, University of Queensland, St Lucia, Brisbane, QLD 4072, Australia,

Bibliografia

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