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The possibility of using thinned classical linear antenna arrays to synthesize two-dimensional thinned MIMO antenna arrays on their basis is considered. The MIMO antenna array which receiving and transmitting elements are located on two mutually orthogonal lines is regarded. On the example of this array it is shown that the directivity diagram of its virtual aperture has the property of separability of spatial variables. It allows using the arrangement of elements of a thinned classical linear antenna array for the receiving and transmitting elements lines. It is demonstrated that a thinned MIMO antenna array can form a radiation pattern with a lower level of side lobes than a full array while keeping the width of the main lobe unchanged. The dependence allowing to determine the peak level of side lobes of a twodimensional thinned MIMO antenna array at a given thinning factor is given.
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Sokolov et al. (2024) studied this question.
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