Optimal Subarray Design Method for Sidelobe Cancellation of Wideband Irregular Subarrayed Array

In this letter, we propose an optimal subarray design method for wideband irregular subarrayed array with sidelobe cancellation (SLC). First, we present the space-time adaptive SLC structure for wideband irregular subarrayed array. The main channel adopts the wideband beamforming method with module-...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2023-12, Vol.22 (12), p.2793-2797
Main Authors: Chen, Ji-yuan, Xu, Zhen-hai, Xiao, Shun-ping
Format: Article
Language:English
Subjects:
Apertures
Array signal processing
Arrays
Beamforming
Broadband
Cancellation
Design methodology
Filter banks
Interference
Mathematical models
Optimal subarray design
Phased arrays
sidelobe cancellation (SLC)
Sidelobes
Time lag
Wideband
wideband irregular subarayed array
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Summary:In this letter, we propose an optimal subarray design method for wideband irregular subarrayed array with sidelobe cancellation (SLC). First, we present the space-time adaptive SLC structure for wideband irregular subarrayed array. The main channel adopts the wideband beamforming method with module-level time delay and subarray-level phase-shifting, and the auxiliary channels are connected with multitap transverse filter banks to provide temporal degree of freedom. Considering the quasi-exact partition of the main array and the position constraints of the auxiliary elements, then we establish the optimal subarray design method to achieve the best interference cancellation performance, and use a two-step optimization method to get the results. The obtained subarray structure has better interference cancellation performance than the traditional method. The effectiveness and potential of the proposed method are verified by different numerical experiments.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2023.3297799