Synthesis of Steered Flat-top Beam Pattern Using Evolutionary Algorithm
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Abstract
In this paper a pattern synthesis method based on Evolutionary Algorithm is presented. A Flat-top beam pattern has been generated from a concentric ring array of isotropic elements by finding out the optimum set of elements amplitudes and phases using Differential Evolution algorithm. The said pattern is generated in three predefined azimuth planes instate of a single phi plane and also verified for a range of azimuth plane for the same optimum excitations. The main beam is steered to an elevation angle of 30 degree with lower peak SLL and ripple. Dynamic range ratio (DRR) is also being improved by eliminating the weakly excited array elements, which simplify the design complexity of feed networks.
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References
Balanis, C. A., Antenna Theory, Analysis and design, 3rd ed. New York, USA: Jhon Willy & sons, 1997.
Elliott, R. S., Antenna Theory & Design, Revised Edition. Wiley-IEEE Press, Dec, 2002.
Azevedo, J. A. R, Shaped beam pattern synthesis with nonuniform sample phases, Progress in Electromagnetics Research B, Vol. 05, 77–90, 2008.
Wooh, S. C, and Shi, Y, Optimum beam steering of linear phased arrays, Wave Motion, Vol. 29,No. 03, 245–265, 1999.
Mandal, D., Chatterjee, A. and Bhattacharjee, A. K. Design of Fully Digital Controlled Shaped Beam Synthesis Using Differential Evolution Algorithm, International Journal of Antennas and Propagation, Vol. 2013, 1–9, 2013.
Reyna, A., Panduro, M. A., Covarrubias, D. H., and Mendez, A. Design of steerable concentric rings array for low side lobe level, Scientia Iranica, Vol. 19, No. 03, 727–732, 2012.
Sievenpiper, D. F., Schaffner, J. H, Song, H. J., Loo, R. Y. and Tangonan, G. Two-dimensional beam steering using an electrically tunable impedance surface, IEEE Transactions on Antennas and Propagation, Vol. 51, No. 10, 2713–2722, 2003.
Mandal, D., Chatterjee, A., Mondal, T. and Bhattacharjee, A. K. Shaped beam synthesis of concentric ring array antenna using Differential Evolution Algorithm, International Journal of Electronics and Communications (AEU), Vol. 69, No. 07, 1025–1032, 2015.
Storn, R., Price, K., Differential evolution: a simple and efficient heuristic for global optimization over continuous spaces, Journal of Global Optimization, Vol. 11, No. 04, 341–359, 1997.
Price, K. V., Storn, R. M. and Lampinen, J. A., Differential EvolutionA Practical Approach to Global Optimization. Natural Computing,Springer, New York, USA, 2005.
Das, S., Abraham, A., Chakraborty, U. K., and Konar, A., Differential evolution using a neighborhood-based mutation operator, IEEE Transactions on Evolutionary Computation, Vol. 13, No. 03, 526–553, 2009.
Guo, J., Li, J., Pattern synthesis of conformal array antenna in the presence of platformusing differential evolution algorithm, IEEE Transactions on Antennas and Propagation, Vol. 57, No. 09, 2615–2621, 2009.