A.Y. Larin - Head of Department, FRPC «RNIIRS»
A.V. Litvinov - Leader of Sector, FRPC «RNIIRS»
S.E. Mishchenko - Dr.Sc. (Eng), Professor, Leading Researcher, FRPC «RNIIRS»
A.S. Pomysov - Researcher, FRPC «RNIIRS»

When designing antenna arrays problem arises informed choice of the amplitude distribution with the defined requirements sidelobe envelope and radiated power. In a rectangular lattice with requirements sidelobe envelope in the main sections, this problem is reduced to the synthesis of the amplitude of two linear antenna arrays. However, in the case of antenna array with an arbitrary boundary aperture, and also when setting requirements envelope sidelobes in other sections of this approach is not applicable. Known methods do not allow to take into account also the requirements for the radiation power of the antenna array. In this connection it is relevant in terms of research and practice to develop an efficient method of synthesis of the amplitude of the antenna array, which allows to take into account the requirements for envelope sidelobe antennas and radiated power. The aim of the work is the choice of the amplitude distribution in the aperture of the antenna array with an arbitrary boundary aperture on the specified requirements to form the envelope of the side lobes and the power radiated by the antenna. In this paper, we propose a method of synthesis of the amplitude, which provides the solution of informed choice of the amplitude distribution in the aperture antenna array lattice with an arbitrary boundary of the aperture under the constraints given to the shape of the envelope of side lobes and the radiated power of the antenna array. The method relies on the use of the energy index close to its physical meaning to the signal/(interference+noise). The method has high computational efficiency because the required amplitude distribution is represented as a product of two finite series approximating the amplitude distributions in two orthogonal planes. Increasing the number of harmonics to enhance the quality of approximation of a given side-lobe envelope for some complicated form of the amplitude distribution.