A New Antenna Array Pattern Synthesis Method with Sidelobe Control


  • Jafar Ramadhan Mohammed College of Electronics Engineering, Ninevah University, Mosul-41001, Iraq.


Antenna Arrays, Pattern Synthesis, Fourier Transforms, Constraints,


A new method for synthesising antenna array patterns with controlled sidelobes and enhanced directivity is proposed. It relies on the relationship between the array factor and its corresponding element excitations through Fourier transform properties. Unlike the standard array synthesisbased Fourier transform methods, the proposed method enforces some specific constraints to achieve the desired goals. It involves the computation of the radiation pattern from initial element excitations of a linear array using inverse fast Fourier transform (FFT). Once the radiation pattern has been computed, the constraints are applied to modify it by forcing a wide null within the whole main beam region and preserving all the sidelobes unchanged. By doing this, the sidelobe structures of both original and modified patterns are exactly kept same. Then, a new array pattern with ideally no sidelobes can be obtained by subtracting the original array pattern from the modified pattern. Results of applying the proposed method to the uniformly and non-uniformly excited arrays are shown in the final section.


Balanis, C.A.," Antenna Theory Analysis And Design", 4th Edition, Wiley, 2016.

Mohammed, J. R., “Phased Array Antenna with Ultra-Low Sidelobes” Electronics Letters, vol. 49, issue 17, pp. 1055-1056, August 2013.

Mohammed, J.R., and Sayidmarie, K.H. “Null steering method by controlling two elements”, IET Microw. Antennas Propag., 2014, 8, (15), pp. 1348–1355.

Mohammed, J.R., “Optimal null steering method in uniformly excited equally spaced linear arrays by optimizing two edge elements”, Electron. Lett., 53(13), pp. 835-837, June 2017.

Mohammed, J.R.," Element Selection for Optimized Multi-Wide Nulls in Almost Uniformly Excited Arrays ", IEEE Antennas and Wireless Communication Letters, vol. 17, issue 4, PP. 629-632, April 2018.

Hemant Patidar, and G.K. Mahanti, “Comparison of Evolutionary Algorithms for Synthesis of Non-Uniformly Spaced Linear Array of Unequal Length Parallel Dipole Antennas for Impedance Matching with low side lobe level,” International Journal of Telecommunication, Electronics, and Computer Engineering, vol. 9, no. 3, pp. 121-127, July-September 2017.

M. I. Dessouky, H. A. Sharshar, and Y. A. Albagory, "Efficient Sidelobe Reduction Technique for Small-Sized Concentric Circular Arrays," Progress In Electromagnetics Research, Vol. 65, 187-200, 2006.

K. Siakavara, M. Chrysomallis, J. L. Fernandez, Jambrina, J. N. Sahalos, “An antenna array synthesis technique by the help of Chebyshev polynomials,” Archiv f. Elektrotechnik, November 1989, Volume 72, Issue 6, pp 435–441.

S. Chatterjee, S. Chatterjee, and, A. Majumdar," Edge Element Controlled Null Steering in Beam Steered Planar Array", IEEE Antennas and Wireless Propagation Letters, Vol. 16, 2017, pp. 2512- 2524.

Ronald J. Pogorzelski, “On a Simple Method of Obtaining Sidelobe Reduction Over a Wide Angular Range in One and Two Dimensions,” IEEE Trans. Antennas Propag., vol. 49, no. 3, pp. 475–482, March 2001.

Will P. M. N. Keizer, “Linear Array Thinning Using Iterative FFT Techniques,” IEEE Trans. Antennas Propag., vol. 56, no. 8, pp. 2257- 2260, August 2008.

Haupt, R. L., “Adaptive nulling with weight constraints”, Progress In Electromagnetics Research B, Vol. 26, 23-38, 2010.

Safaai-Jazi, A. and Stutzman, W.L, “Side Lobe Reduction in Uniformly Excited Linear Arrays,” IEEE International Symposium on Antennas and Propagation (AP-S 2015), pp. 2449–2450, 2015.

Mohammed, J.R and and Sayidmarie, K. H. “Sensitivity of the Adaptive Nulling to Random Errors in Amplitude and Phase Excitations in Array Elements," International Journal of Telecommunication, Electronics, and Computer Engineering, vol. 10, no. 1, pp. 51-56, January-March 2018.




How to Cite

Mohammed, J. R. (2018). A New Antenna Array Pattern Synthesis Method with Sidelobe Control. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), 10(3), 31–36. Retrieved from https://jtec.utem.edu.my/jtec/article/view/3508