Iterative fast Fourier transform algorithm based on mutual coupling compensation strategy and its application

Pu Xuan; Cheng Youfeng; Xie Shaoyi; Yang Dan; Liao Cheng

doi:10.11884/HPLPB202032.200014

Volume 32 Issue 6

May 2020

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Article Navigation > High Power Laser and Particle Beams > 2020 > 32(6): 063005

Pu Xuan, Cheng Youfeng, Xie Shaoyi, et al. Iterative fast Fourier transform algorithm based on mutual coupling compensation strategy and its application[J]. High Power Laser and Particle Beams, 2020, 32: 063005. doi: 10.11884/HPLPB202032.200014

Citation:

Pu Xuan, Cheng Youfeng, Xie Shaoyi, et al. Iterative fast Fourier transform algorithm based on mutual coupling compensation strategy and its application[J]. High Power Laser and Particle Beams, 2020, 32: 063005. doi: 10.11884/HPLPB202032.200014

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Iterative fast Fourier transform algorithm based on mutual coupling compensation strategy and its application

doi: 10.11884/HPLPB202032.200014

1.
School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610031, China
2.
Northwest Institute of Nuclear Technology, Xi’an 710024, China

Received Date: 2020-01-13
Rev Recd Date: 2020-03-30
Publish Date: 2020-05-12

Abstract

Abstract

In this paper, an improved iterative fast Fourier transform (IFFT) based on the mutual coupling compensation matrix (MCCM) is introduced and applied to the low-sidelobe synthesis of wide-angle scanning phased arrays. Firstly, the MCCM is integrated into the IFFT to take into account the mutual coupling effects between the array elements. In this situation, the far field of an array which takes the mutual coupling into calculation can satisfy the principle of pattern multiplication. Secondly, a wide-beam element antenna backed by a substrate integrated waveguide (SIW) cavity is proposed. The proposed wide-beam antenna can simultaneously excite the TE₁₁₀ and TE₂₁₀ modes to expand its operation bandwidth. Based on this element, three wide-angle scanning phased array antennas with 35, 75 and 100 elements are formed and calculated. Finally, the proposed IFFT algorithm is used in the low-sidelobe synthesis of the three phased arrays. Compared with the results of the genetic algorithm based on the active element patterns, this algorithm can realize low-sidelobe performance within the scanning range from −60° to 60° at faster speed.
- mutual coupling compensation matrix,
- iterative fast Fourier transform,
- wide-angle scanning phased array,
- low-sidelobe synthesis

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References(19)

References

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