Pattern Synthesis using Genetic Algorithm for Low Sidelobe Levels

International Journal of Computer Applications
© 2011 by IJCA Journal
Number 1 - Article 1
Year of Publication: 2011
V. Rajya Lakshmi
G. S. N. Raju

Rajya V Lakshmi and G S N Raju. Article:Pattern Synthesis using Genetic Algorithm for Low Sidelobe Levels. International Journal of Computer Applications 31(4):53-57, October 2011. Full text available. BibTeX

	author = {V. Rajya Lakshmi and G. S. N. Raju},
	title = {Article:Pattern Synthesis using Genetic Algorithm for Low Sidelobe Levels},
	journal = {International Journal of Computer Applications},
	year = {2011},
	volume = {31},
	number = {4},
	pages = {53-57},
	month = {October},
	note = {Full text available}


For pattern synthesis of arrays, it is required to find out appropriate weighting vectors to yield a desired radiation pattern. It is well known that several methods for above purpose are available in literature. It is an established fact that when an attempt is made to reduce the first sidelobe level, the beamwidth increases. However, it is of interest in the present work to synthesize an array for a specified first side lobe level without deteriorating the beamwidth. For this purpose, well known analytical technique for array synthesis to control side lobe level, Dolph Chebyshev method is used with the application of WIPL-D Microwave EM software, and the excitation levels are found out. They are also found out using Genetic Algorithm (GA). The weighting vectors are compared in the form of a Table. Using these vectors, the patterns are generated for arrays of different elements. The resultant patterns are compared for the above methods.


  • Raju, G. S. N., 2005. Antennas and propagation, Pearson Education.
  • Elliot, R. S., 1981. Antenna Theory and Design. Prentice-Hall. New Jersey.
  • Dolph, C. L., June 1946. A current distribution for broadside arrays which optimizes the relationship between beam width and side-lobe level, Proc. IRE 34:335-348.
  • Taylor, T. T., Jan. 1955. Design of line source antennas for narrow beam widths and low sidelobes, IRE AP Trans. 4.16-28.
  • Villeneuve, A. T., Oct. 1984. Taylor patterns for discrete arrays, IEEE AP-S Trans. 32(10) 1089-1094.
  • Y. C. Jiao, W. Y. Wei, L. W. Huang, H. S. Wu, “A new low side lobe pattern synthesis technique for conformal arrays”, IEEE Trans. Antenna Propagation. Vol 41, pp 824-831, June 1993.
  • Sim, M. H .Er. S. L., and Koh, S. N., Nov. 1993. “Application of constrained optimization techniques to array pattern synthesis”, Signal Processing. Vol 34, pp 323-334.
  • Dufort, E. C., Aug 1989. “Pattern synthesis based on adaptive array theory”, IEEE Trans. Antenna Propagat. Vol 37, pp 1011-1018.
  • Olen, C. A., and Compton Jr. R. T., Oct. 1990. “A numerical pattern synthesis algorithm for arrays”, IEE Trans. Antenna Propagat. Vol 30, pp 1666-1676.
  • Skolnik, M., Nemhauses, G., and Shermas, J., Jan 1964. “Dynamic programming applied to unequally spaced array”, IEEE Trans. Antenna and Propogat. Vol 12, pp 35-43.
  • Samii, Y. R., and Michelssen, E., 1999. Electromagnetic Optimization by Genetic Algorithm, John Wiley & Sons, New York.
  • Haupt, R. L., Apr. 1995. “An introduction to genetic algorithm for electromagnetics”, IEEE Antennas Propogat. Mag. Vol 37, no 2, pp 7-15.
  • Wei, D., and Michielssen, E., Mar. 1997. “Genetic algorithm optimizations applied to electromagnetic: A review”, IEEE Trans Antennas and Propogat. Vol. 45, No.3.
  • Shinizu, M., 1994. “Determining the Excitation coefficients of an array using Genetic Algorithm”, IEEE AP-S, International symposium, Seattle, June 19-24, Vol.1, pp-530-533.
  • Tennant, A., Dawood, M., and Anderson, A., February 1994. “Array pattern nulling by Elert position perturbation using a Genetic Algorithm”, Electronic letters, Vol 30, No 3, pp 174-176.
  • Johnson, J., and Rahmat-Samii, Y., 1994. “Genetic algorithm optimization and its application to antenna design”, IEEE AP-S International Symposium, Seattle, June 19-24, Vol. 1, pp 326-329.
  • Haupt, R., July 1994. “Thinned Arrays using Genetic Algorithm”, IEEE Trans Antenna and Propogat. Vol 42, No 7, pp 993-999.
  • Bahr, M., Boag, A., Michielssen E., and Mittra, R., 1994. “ Design of ultra broadband loaded monopoles”, IEEE AP-S International Symposium, Seattle, June 19-24, Vol 2, pp 1290-1293.
  • Maudal, D., Ghoshal, S. K., Das, S., Bhatttacharjee, S., and Bhattacharjee, A. K., 2010. “Improvement of radiation pattern for linear antenna arrays using GA” International conference on Recent Trends in Informatics, Telecommunication and Computing.
  • Sudipta Das, Somes Bhattacherjee, Durbadal Mandal, Anup Kumar Bhattacharjee, 2010. “Optimal sidelobe reduction of symmetric linear antenna array using Genetic Algorithm”, 2010 Annual IEE Conference (INDICON).
  • WIPL-D software manual.
  • Johnson, J. M., and Samii, Y. R., 1997. “Genetic Algorithm in engineering electromagnetic”, IEEE antenna and propagate. Magazine, vol.39, No 4.
  • Johnson, J. M., and Samii, Y. R., 1996. “Genetic Algorithm optimization for aerospace electromagnetics”, IEEE aerospace applications conference proceedings volume 1, pp 87-102.
  • Johnson J. M., and Samii, Y. R., 1996. “Genetic Algorithm in electromagnetics”, IEEE antenna and Propagat. Society international symposium digest volume 2, Baltimore, MD, July 21-26, pp 1480-1483.
  • Balanis, C. A., 1997. Antenna Theory Analysis and Design 2nd Edition, John Wiley & Sons Inc, New York.