In most applications of antenna arrays, side lobe levels (SLLs) are commonly unwanted. Especially, the first side lobe level which determines maximum SLL is the main source of electromagnetic interference (EMI), and hence, it should be lowered. A procedure of finding the optimum side lobe-minimizing weights for an arbitrary linear equally spaced array is derived, which holds for any scan direction, beam width, and type of antenna element used. In this science article, the use of convolution procedure and the time scaling property reduces the side lobe level for any type of linear equally spaced array. Results show that by this procedure, the side lobe level is reduced about two times or even more.
2. Sun, X. M., M. L. Yang, and X. Q. Sheng, "Accurate and efficient analysis of large antenna arrays with radome on a large aircraft," Progress In Electromagnetics Research, Vol. 153, 103-111, 2015.
doi:10.2528/PIER15082003
3. Safaai-jazi, A. and W. L. Stutzman, "A new low-sidelobe pattern synthesis technique for equally spaced linear arrays," IEEE Transactions on Antennas and Propagation, Vol. 64, No. 4, 1317-1324, 2016.
doi:10.1109/TAP.2016.2526084
4. Gassab, O. and A. Azrar, "Novel mathematical formulation of the antenna array factor for side lobe level reduction," ACES Journal, Vol. 31, No. 12, 1452-1462, 2016.
5. Balanis, C. A., Antenna Theory: Analysis and Design, John Wiley & Sons, 2016.
6. Haupt, R. L., Antenna Arrays A Computational Approach, John Wiley & Sons, New Jersey, 2010.
doi:10.1002/9780470937464
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