Alshammary, Abdullah and Weiss, Stephan and Soraghan, John and Almorqi, Sultan (2014) Wideband 2-Dimensional scanning planar subarray. In: 10th IMA International Conference on Mathematics in Signal Processing. Institute of Mathematics and its Applications.
Alshammary_etal_IMAICMSP2014_Wideband_2_Dimensional_scanning_planar_subarray.pdf - Accepted Author Manuscript
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Achieving frequency invariance in antenna array requires linear-phase system to maintain frequency independent time lag. For example True Time Delay or tapped delay line. In this paper, the array elements are divided into subarrays. Then all subarrays are steered towards the desired azimuth direction, while the wideband property is preserved by exploiting the subarray two-dimensional structure as a sensor delay line. Each subarray pattern is then individually rotated around the desired elevation direction. Eventually superposition of subarrays is maximally constructive towards the desired direction and partially constructive or destructive everywhere else. Two frequency invariant beamformers are used. These are inverse DFT and Least squares. Results are compared with wideband wideband one-dimensional pattern syntheses of the same design methods in power concentration.
|Item type:||Book Section|
|Keywords:||sensor delay line, wideband beamforming, subarray, frequency independent time lag, azimuth direction, wideband, Electrical engineering. Electronics Nuclear engineering, Electrical and Electronic Engineering|
|Subjects:||Technology > Electrical engineering. Electronics Nuclear engineering|
|Department:||Faculty of Engineering > Electronic and Electrical Engineering
Technology and Innovation Centre > Sensors and Asset Management
|Depositing user:||Pure Administrator|
|Date Deposited:||19 Sep 2016 13:58|
|Last modified:||19 Mar 2017 10:46|