I.S. Dmitriev – Ph.D.(Eng.), Leading Research Scientist, JSC «Concern «Sozvezdie» (Voronez) E-mail: dmiv@mail.ru

Regularity of origination of side lobes of the two-dimensional directivity pattern of flat ring arrays is observed at their phasing on a maximum of coefficient of amplification in set a two-dimensional direction. The existing engineering design procedure of a maximum level of side lobes in the set range of relations of radius of a lattice to length of an accepted or radiated radio wave an azimuthal plane is passed round to a case of a nonzero angle of elevation. The gained results are applicable not only to ring, but also to any flat arrays possessing an axial symmetry.

1. Dmitriev I.S., Slichenko M.P. The maximum likelihood detection and estimation of a direction of arrival and amplitude of intensity of a radio-wave by means of a multichannel radio direction finder with antenna system of any configuration // Antennas. 2011. № 5(168). P. 59−64.
2. Vinogradov A.D., Dmitriev I.S., Il’in M.Yu., Kozlov M.I., Slichenko M.P., Solomko Е.S. Limiting sensitivity of broadband radio direction finders with equidistant ring arrays with not directed antennas // Antennas. 2013. № 5(192). P. 18−29.
3. Vinogradov A.D., Litvinov G.V., Makarov G.V. Optimisation of structures of the correlated-interferometric radio direction finders with ring arrays // Antennas. 2001. № 5(51). P. 33−38.
4. Ashikhmin A.V., Vinogradov A.D., Mazlov M.G., Minin L.A. Research of characteristics of the broadband few-antennas one-ring arrays with use of Bessel's functions. // Antennas. 2006. № 8(111). P. 8−14.
5. Vinogradov A.D., Mikhin A.Yu., Podshivalova G.V., Shipilova T.I. The analysis of broadbandness of radio direction finders of OVCHUVCH ranges with few-antennas ring arrays // Antennas. 2008. № 7−8(134−135). P. 7−15.
6. Dmitriev I.S. About performances of lateral reception (radiation) the phased ring antenna lattices // Antennas. 2015. № 5(216). P. 28−34.
7. Vinogradov A.D., Minin L.A., Rabotkin V.A. The mathematical description of directivity pattern of the equidistant ring phased arrays with use of Bessel's functions // Antennas. 2017. № 5(237). P. 5−12.