volume | PIER Journals

2010-12-15

Combination of Inverse Fast Fourier Transform and Modified Particle Swarm Optimization for Synthesis of Thinned Mutually Coupled Linear Array of Parallel Half-Wave Length Dipole Antennas

Narendra Nath Pathak,

Dr. Narendra Nath Pathak

Department of Electronics and Communication Engineering

Dr. B.C Roy Engineering College Durgapur

India

Homepage

Banani Basu,

Dr. Banani Basu

Department of Electronics and Communication Engineering

National Institute of Technology

India

Homepage

Gautam Mahanti

Dr. Gautam Mahanti

Department of Electronics and Communication Engineering

National Institute of Technology

India

Homepage

Progress In Electromagnetics Research M, Vol. 16, 105-115, 2011

doi:10.2528/PIERM10101003

Abstract

In this paper, the authors propose a method based on the combination of inverse fast Fourier transform (IFFT) and modified particle swarm optimization for side lobe reduction of a thinned mutually coupled linear array of parallel half-wave length dipole antennas with specified maximum return loss. The generated pattern is broadside (φ=90 degree) in the horizontal plane. Mutual coupling between the half-wave length parallel dipole antennas has been taken care of by induced emf method considering the current distribution on each dipole to be sinusoidal. Directivity, first null beamwidth (FNBW), return loss of the thinned array is also calculated and compared with a fully populated array. Two cases have been considered, one with symmetric excitation voltage distribution and the other with asymmetric one. The method uses the property that for a linear array with uniform element spacing, an inverse Fourier transform relationship exists between the array factor and the element excitations. Inverse Fast Fourier Transform is used to calculate the array factor, which in turn reduces the computation time significantly. The element pattern of half-wave length dipole antenna has been assumed omnidirectional in the horizontal plane. Two examples are presented to show the flexibility and effectiveness of the proposed approach.

Citation

Copy Export

Narendra Nath Pathak, Banani Basu, and Gautam Mahanti, "Combination of Inverse Fast Fourier Transform and Modified Particle Swarm Optimization for Synthesis of Thinned Mutually Coupled Linear Array of Parallel Half-Wave Length Dipole Antennas," Progress In Electromagnetics Research M, Vol. 16, 105-115, 2011.
doi:10.2528/PIERM10101003

References

1. Balanis, C. A., Antenna Theory: Analysis and Design, 2nd Ed., John Wiley and Sons (Asia), 2003.

2. Quevedo-Teruel, O. and E. Rajo-Iglesias, "Ant colony optimiza-tion in thinned array synthesis with minimum sidelobe level," IEEE Antennas and Wireless Propagation Letters, Vol. 5, 349-352, 2006.
doi:10.1109/LAWP.2006.880693

3. Mahanti, G. K., N. Pathak, and P. Mahanti, "Synthesis of thinned linear antenna arrays with fixed sidelobe level using real-coded genetic algorithm," Progress In Electromagnetics Research, Vol. 75, 319-328, 2007.
doi:10.2528/PIER07061304

4. Haupt, R. L., "Thinned arrays using genetic algorithms," IEEE Trans. Antennas Propag., Vol. 42, No. 7, 993-999, 1994.
doi:10.1109/8.299602

5. Pathak, N., G. K. Mahanti, S. K. Singh, J. K. Mishra, and A. Chakraborty, "Synthesis of thinned planar circular array antennas using modified particle swarm optimization," Progress In Electromagnetics Research Letters, Vol. 12, 87-97, 2009.
doi:10.2528/PIERL09090606

6. Razavi, A. and K. Forooraghi, "Thinned arrays using pattern search algorithms," Progress In Electromagnetics Research, Vol. 78, 61-71, 2008.
doi:10.2528/PIER07081501

7. Bucci, O. M., T. Isernia, and A. F. Morabito, "A deterministic approach to the synthesis of pencil beams through planar thinned arrays," Progress In Electromagnetics Research, Vol. 101, 217-230, 2010.
doi:10.2528/PIER10010104

8. Haupt , R. L., "Interleaved thinned linear arrays," IEEE Trans. Antennas Propag., Vol. 53, No. 9, 2858-2864, 2005.
doi:10.1109/TAP.2005.854522

9. Schwartzman, L., "Element behavior in a thinned array," IEEE Trans. Antennas Propag., Vol. 15, No. 7, 571-572, 1967.
doi:10.1109/TAP.1967.1138989

10. Kennedy, J. and and R. C. Eberhart, "Particle swarm optimization ," Proc. IEEE Int. Conf. Neural Networks, 1942-1948, 1995.
doi:10.1109/ICNN.1995.488968

11. Li, W. T., X. W. Shi, and Y. Q. Hei, "An improved particle swarm optimization algorithm for pattern synthesis of phased arrays," Progress In Electromagnetics Research, Vol. 82, 319-332, 2008.
doi:10.2528/PIER08030904

12. Jin, N., Y. Rahmat-Samii, and , "Advances in particle swarm optimization for antenna designs: Real-number, binary, single-objective and multiobjective implementations," IEEE Trans. Antennas Propag., Vol. 55, No. 3, 556-567, March 2007.
doi:10.1109/TAP.2007.891552

13. Chen, T. B., Y. L. Dong, Y. C. Jiao, and F. S. Zhang, "Synthesis of circular antenna array using crossed particle swarm optimization algorithm," Journal of Electromagnetic Waves and Applications, Vol. 20, No. 13, 1785-1795, 2006.
doi:10.1163/156939306779292273

14. Wang, L. L., D. G. Fang, and W. X. Sheng, "Combination of genetic algorithm (GA) and fast Fourier transform (FFT) for synthesis of arrays," Microwave and Optical Technology Letters, Vol. 37, No. 1, 56-59, April 2003.
doi:10.1002/mop.10823