- Tytuł:
- A wideband smart antenna employing spatial signal processing
- Autorzy:
-
Uthansakul, M.
Białkowski, M. E. - Powiązania:
- https://bibliotekanauki.pl/articles/307580.pdf
- Data publikacji:
- 2007
- Wydawca:
- Instytut Łączności - Państwowy Instytut Badawczy
- Tematy:
-
direction estimation
null steering
wideband beamforming
wideband smart antenna
wideband antenna - Opis:
- 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.
- Źródło:
-
Journal of Telecommunications and Information Technology; 2007, 1; 13-17
1509-4553
1899-8852 - Pojawia się w:
- Journal of Telecommunications and Information Technology
- Dostawca treści:
- Biblioteka Nauki
Artykuł