Fractal-Based Thinned Planar-Array Design Utilizing Iterative FFT Technique

Table 1

Average-time comparison for computing the planar-array pattern with different methods.

Number of elements	Element-by-element superposition(s)			2D FFT(s)
	512 × 512; points	1024 × 1024; points	2048 × 2048; points	512 × 512; points	1024 × 1024; points	2048 × 2048; points
9 × 9	13.3388	48.4308	194.4324	0.0169	0.0781	0.3501
27 × 27	182.7668	694.7960	2862.5529	0.0141	0.0831	0.3611