Off-broadside main beam design for frequency invariant beamformers

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Liu, W. and Weiss, S.; (2008) Off-broadside main beam design for frequency invariant beamformers. In: International ITG Workshop on Smart Antennas, 2008. IEEE, pp. 190-194. ISBN 978-1-4244-1756-8 (https://doi.org/10.1109/WSA.2008.4475558)

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Abstract

In a previously proposed design method for frequency invariant beamforming, the design for the case of an off-broadside main beam is not satisfactory. After a detailed analysis, we propose two methods to overcome this problem: one is to increase the length of the FIR filter attached to each sensor, as a result, we need to sample the transformed desired response more densely in the associated direction; the other one is to design a broadside main beam first, then it is convolved with appropriate steering delay filters. Design examples show that the two methods can provide satisfactory results.

ORCID iDs

Liu, W. and Weiss, S. ORCID logoORCID: https://orcid.org/0000-0002-3486-7206;
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