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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2020-03-02
Low Sidelobe Wide Nulling Digital Beamforming for Large Planar Array Using Iterative FFT Techniques
By
Tarek Sallam,

    Dr. Tarek Sallam

    School of Computer Science and Technology

    Shandong Xiehe University

    China

    Homepage

Ahmed Attiya

    Prof. Ahmed Attiya

    Microwave Engineering Department

    Electronics Research Institute (ERI)

    Egypt

    Homepage

Progress In Electromagnetics Research M, Vol. 90, 37-46, 2020
doi:10.2528/PIERM20011403 | Google Scholar

Abstract
The combination of low peak sidelobe level (PSLL) with wide sector nulling digital beamforming (DBF) is achieved for large planar array antennas. This combination is carried out using the iterative Fourier transform (IFT) method. The method is based on the iterative Fourier technique to derive element excitations from the prescribed array factor using successive forward and backward Fourier transforms. A 1024-element rectangular uniformly spaced array is used as an example to demonstrate the performance of the proposed method. Numerical examples show that the proposed method achieves very low PSLL with very wide nulling sectors up to the half plane of the far-field pattern. Moreover, numerical results show that the proposed method is effectively functional even when the mainbeam is steered to directions other than the broadside.
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Citation
Tarek Sallam, and Ahmed Attiya, "Low Sidelobe Wide Nulling Digital Beamforming for Large Planar Array Using Iterative FFT Techniques," Progress In Electromagnetics Research M, Vol. 90, 37-46, 2020.
doi:10.2528/PIERM20011403
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