Optimization of Plane Antennas with Semitransparent Aperture

Abstract

The problems of optimization of the planar resonant or leaky-wave antennas with waveguide excitation are considered. The directivity factor in some frequency range or deviation of the amplitude pattern from the desired one is optimized. The optimization algorithm consists of transformation of the outer problem to inner one, and of using the following combined methods: local variations, cross-sections, opposite directions, and basic problems of excitations. Numerical results for the resonant antenna and the detailed algorithm description for the leaky-wave antenna are presented.

Dedication to the Memory of Prof. Nikolai Voitovich

“…At the same time, the foundations of a new scientific direction in the synthesis theory of radiating systems were laid and it turned out that the GMEO is especially effective for the investigation of resonator systems, in which the characteristic of radiated field is weakly dependent on excitation. In particular, using GMEO a method of constructive synthesis of resonator radiating systems was created, which allows to solve directly the inverse problems related to the reconstruction of the body shape, its transparency, and the parameters of internal inclusion according to a given scattering pattern, without solving the direct problems [5] - [9].…”