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Unconventional Beamforming for Quasi-Hemispheric Coverage of a Phased Array Antenna
Z
W
J
C
冉
DOI:10.1109/LAWP.2013.2294690.png)
Abstract
En 中文
It is usually difficult to synthesize a wide-angle coverage beam for an array antenna. In this letter, we propose an unconventional beamforming approach for a phased array antenna. By optimizing the orientations and depths of nulls of the radiation pattern, effective quasi-hemispheric coverage with a single remaining null in the direction of no interest can be achieved. We modify an existing nulling algorithm to synthesize such a special radiation pattern by introducing a hypothetical incidence of interference and Gaussian white noise. Analysis and simulation of a five-element linear array antenna verified the effectiveness of the proposed approach.
Keywords:
Beamforming
nulling
phased array antenna
stochastic optimization
wide-angle coverage
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