The focusing properties of six array configurations in the form of square, square with interlaced elements, square ring, cross (+) shape, cross (X) shape, and square ring plus diagonals shape arrays are investigated. The performance parameters, such as field distribution in the focal region, size of the focal spot, depth of field, level of field at focal point, and sidelobe structure, are compared. Computer simulations using MTALAB environment are performed in the investigations. The square ring and square ring plus diagonals configurations show favorable focusing properties. The resultant field patterns will help to find the arrays usefulness for hyperthermia and imaging applications.
Ahmed M. Abdulkhaleq,
"Investigation of Six Array Geometries for Focused Array Hyperthermia Applications," Progress In Electromagnetics Research M,
Vol. 23, 181-194, 2012. doi:10.2528/PIERM12010605
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