Products of the laboratory of computational electromagnetics: from mathematical models to antenna-feeder devices

Abstract

Subject and Purpose. The study of various kinds of microwave devices and the description of the most interesting designs. Methods and Methodology. The fast numerical-analytical methods are used in the study of devices. They allowed identifying fine physical effects and achieving the optimal characteristics of these devices. The main achievements of the laboratory of computational electromagnetics obtained in recent years are described in the paper. Results. A simulation system based on numerical-analytical methods is developed. It covers a wide class of problems with a discrete spectrum (waveguides and periodic structures). It also includes the ability to model antenna devices excited by complex feeder systems. With its help, a wide range of passive microwave devices was designed, including frequency and polarization-selective nodes, mode and polarization converters used from microwaves up to the terahertz range. Particular attention is paid to the developments being studied in the new sections of radiophysics based on extraordinary transmission and optical activity. Conclusions. The most interesting devices studied in the laboratory of computational electromagnetics in recent years are described in the paper. Many of them are designed for the first time.

Keywords

• filters
• numerical-analytical models
• passive microwave devices
• polarization converters.
• problem-oriented programming