A Hybrid Strategy Based on Weighting Density and Genetic Algorithm for the Synthesis of Uniformly Weighted Concentric Ring Arrays

A hybrid strategy based on weighting density and genetic algorithm for the synthesis of uniformly weighted concentric ring arrays (UWCRAs) aimed at minimizing the peak sidelobe level is proposed. In the strategy, an integer genetic algorithm is used to search the ring radii. Meanwhile, the element number of each ring is directly calculated from the quantized weighting density distribution constraint of a reference array. UWCRAs with a minimum element spacing constraint of half-wavelength and wide range array apertures from small diameters to the large ones are synthesized with this strategy. Numerical experiments validate the effectiveness of the proposed strategy, showing improvements with respect to the previous results.

[1]  A. Massa,et al.  Hybrid BCS-Deterministic Approach for Sparse Concentric Ring Isophoric Arrays , 2015, IEEE Transactions on Antennas and Propagation.

[2]  R. Willey,et al.  Space tapaering of linear and planar arrays , 1962 .

[3]  A. Rydberg,et al.  Design of an unequally spaced reflectarray , 2003, IEEE Antennas and Wireless Propagation Letters.

[4]  R. Haupt,et al.  Optimized Element Spacing for Low Sidelobe Concentric Ring Arrays , 2008, IEEE Transactions on Antennas and Propagation.

[5]  W. Keizer,et al.  Synthesis of Thinned Planar Circular and Square Arrays Using Density Tapering , 2014, IEEE Transactions on Antennas and Propagation.

[6]  R. Haupt,et al.  Antenna Design With a Mixed Integer Genetic Algorithm , 2007, IEEE Transactions on Antennas and Propagation.

[7]  Qiang Guo,et al.  Synthesis of Uniformly Excited Concentric Ring Arrays Using the Improved Integer GA , 2016, IEEE Antennas and Wireless Propagation Letters.

[8]  T. Milligan,et al.  Space-tapered circular (ring) array , 2004, IEEE Antennas and Propagation Magazine.

[9]  Marco A. Panduro,et al.  Synthesis of sparse circular antenna arrays applying a tapering technique over reconstructed continuous current distribution , 2016 .

[10]  O. Bucci,et al.  A Deterministic Two Dimensional Density Taper Approach for Fast Design of Uniform Amplitude Pencil Beams Arrays , 2011, IEEE Transactions on Antennas and Propagation.

[11]  W. Keizer.  Large Planar Array Thinning Using Iterative FFT Techniques , 2009, IEEE Transactions on Antennas and Propagation.

[12]  Yi Jiang,et al.  An Innovative Strategy for Synthesis of Uniformly Weighted Circular Aperture Antenna Array Based on the Weighting Density Method , 2013, IEEE Antennas and Wireless Propagation Letters.

[13]  Robert E. Willeut.  Space Tapering of Linear and Planar Arrays , 1962 .

[14]  M. Skolnik,et al.  Statistically designed density-tapered arrays , 1964 .

[15]  J. N. Sahalos,et al.  Sparse Linear Array Synthesis With Multiple Constraints Using Differential Evolution With Strategy Adaptation , 2011, IEEE Antennas and Wireless Propagation Letters.

[16]  E. Moreno,et al.  Pencil-beam pattern synthesis with a uniformly excited multi-ring planar antenna , 2000 .