Improved Smart Antenna Design Using Displaced Sensor Array Configuration
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Improved Smart Antenna Design Using Displaced Sensor Array ConfigurationAbstract
Abstract-In this paper we propose a new sensor array configuration for improved smart antenna design. The new configuration involves two parallely-displaced sensor arrays in the vertical plane. The proposed sensor array configuration avoids the problem of spatial aliasing encountered in largely spaced sensor arrays and reduces the effects of inter-element mutual coupling for closely spaced arrays. Moreover, the proposed sensor array configuration allows for doubling the number of array elements and, hence, increasing the system capacity, without significantly increasing the array aperture. This allows for a more accurate beam pattern to be generated especially in a radio environment with a large number of interference signals. Numerical results are presented to demonstrate the improved performance of direction-of-arrival estimation and adaptive beamforming algorithms when the proposed array configuration is used.
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