Grating Lobe Suppression with Element Count Optimization in Planar Antenna Array
- 1 Department of Electronics and Communication, National Institute of Technology, Warangal, India
- 2 Department of Electronics and Communication, National Institute of Technology, Warangal, India
Abstract
The novel approach of this paper describes the suppression of grating lobe level with the element count optimization in planar antenna array. Rectangular lattice (RL) and triangular lattice (TL) structures are chosen for determining the achievable array element patterns (EP) and further suppressing the grating lobe level. The element spacing and number of elements (10 × 20 array) are taken into account for particular lattice. Grating lobe peaks are observed for the 200-element planar array at maximum scan angle ( θ ) with the set frequency of 3 GHz. Further, it is found that 14 ° ; bore sight elevation of rectangular lattice produces a transformed field of view, which permits a reduction in element count of 20.39% compared with 10° bore sight elevation. Finally, the typical values of elevation, element count and array size (25 cm 2 ) are trained using artificial neural network (ANN) algorithm and element count is predicted after testing the network. The network shows a high success rate.
- Grillo, G. and Sergei Skobelev, P. (2011) Phased Array Antennas with Optimized Element Patterns. 2nd Edition, Artech House, London.
- Denisenko, V.V. (2005) A Multi-Element Phased Antenna Array of the Ka Band. Antenny, 1, 7-14.
- Visser, H.J. (2005) Array and Phased Array Antenna Basics. 2nd Edition, John Wiley & Sons Ltd., Hoboken. http://dx.doi.org/10.1002/0470871199
- Huang, C., Zhao, Z., Feng, Q. and Luo, X. (2011) Suppression of Grating Lobes from a Corrugated 2 × 2 Slot Antenna Array with Element Spacing beyond a Wavelength. IET Microwaves, Antennas Propagation, 5, 1607-1612. http://dx.doi.org/10.1049/iet-map.2010.0575
- Toyama, N. (2005) Aperiodic Array Consisting of Sub Arrays for Use in Small Mobile Earth Stations. IEEE Transactions on Antennas and Propagation, 53, 2004-2010. http://dx.doi.org/10.1109/TAP.2005.848486
- Chang, K. (2005) Encyclopedia of RF and Microwave Engineering. Vol. 6, 252-254. http://dx.doi.org/10.1002/0471654507
- Haupt, R.L. and Werner, D.G. (2005) Genetic Algorithms in Electromagnetics. John Wiley & Sons Ltd., Hoboken.
- Patnaik, A., Anagnostou, D.E. and Christodoulou, C.G. (2004) Applications of Neural Networks in Wireless Communications. IEEE Antennas and Propagation Magazine, 46, 130-137. http://dx.doi.org/10.1109/MAP.2004.1374125
- Bregains, J.C., Dorado, J., Gestal, M., Rodriguez, J.A., Ares, F. and Pazos, A. (2002) Avoiding Interference in Planar Arrays through the Use of Artificial Neural Networks. IEEE Antennas and Propagation Magazine, 4, 61-65. http://dx.doi.org/10.1109/MAP.2002.1043149
- Haykin, S. (1999) Neural Networks: A Comprehensive Foundation. 2nd Edition, Prentice Hall, Upper Saddle River.