V. Indenbom – Ph.D. (Eng.), Senior Research Scientist, Head of Sector of Antenna Department, JSC «All-Russian Scientific and Research Institute of Radiotechnics» (Moscow)

E-mail: mindenbom@mail.ru

Yu. Kurochkin – Engineer, JSC «All-Russian Scientific and Research Institute of Radiotechnics» (Moscow)

The ring antenna arrays with a multi-beam radiation pattern having several main lobes which oriented in different azimuth directions have been investigated. The methods of forming of the multi-beam radiation pattern having the maximum value of generalized and weighted average realized gain have been proposed. The excitation amplitudes of the array elements have been found as a result of application of the known theorems of linear algebra. Numerical calculations have been performed for a cylindrical antenna array of infinite narrow slits which input feeder include the four-pole networks for carrying out the ideal matching for uniform excitation. The criterions of optimization have been compared for any main lobes orientations and ratio gain values.

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