MMA Memo #218

Level of Negative Side Lobes in an Array Beam

L. Kogan

July 1, 1998

Keywords: side lobes

It is shown that the level of negative side lobes in any array beam (PSF - Point Spread Function) is equal , where N is number of elements at the array. For the central symmetry arrays all negative side lobes are tangent to the horizontal line at the level. . For large N positive side lobes are bigger than negative ones (in absolute values). For example, for N = 36 (accepted value for MMA now) the value of negative side lobes is 0.0286. The level of negative side lobes does not depend on the array configuration and is determined completely by the number of the elements at the array

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Last modified: 09 December, 1999