Title :
Design and Performance Assessment of a Wideband Smart Antenna Employing Only Spatial Signal Processing
Author :
Uthansakul, Monthippa ; Bialkowski, Marek E.
Author_Institution :
Sch. of Inf. Technol. & Electr. Eng., Queensland Univ., Brisbane, Qld.
Abstract :
This paper describes the design and performance assessment of a wideband beamformer which utilizes only spatial signal processing. In order to provide a variable radiation pattern in azimuth over a large frequency band a two-dimensional (2-D) array antenna consisting of wideband antenna elements arranged in a horizontal rectangular lattice is employed. The weighing scheme in this array relies on an inverse discrete Fourier transform (IDFT) technique. The obtained weighting coefficients are real numbers which in practice can be realized by amplifiers or attenuators. The paper considers the aspect of directional of arrival (DOA) estimation prior to forming the desired beam. The performance of this wideband smart antenna system is assessed with the use of full EM simulations and measurements
Keywords :
adaptive antenna arrays; antenna radiation patterns; array signal processing; broadband antennas; direction-of-arrival estimation; discrete Fourier transforms; DOA estimation; IDFT technique; directional of arrival estimation; horizontal rectangular lattice; inverse discrete Fourier transform technique; radiation pattern; spatial signal processing; two-dimensional array antenna; wideband beamformer; wideband smart antenna system; Antenna radiation patterns; Array signal processing; Azimuth; Broadband antennas; Direction of arrival estimation; Frequency; Signal design; Signal processing; Two dimensional displays; Wideband;
Conference_Titel :
Antennas and Propagation Society International Symposium 2006, IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
1-4244-0123-2
DOI :
10.1109/APS.2006.1711113
