Development principles of the system of linear microwave devices modeling

Abstract

Development principles of the system of linear microwave devices modeling, intended for fundamental and applied studies in microwave physics, are presented.

1. Decomposition. Three types of decomposition, namely a) to specific elementary geometries, b) to elementary sections of irregularity volume, c) to functional sections are given.

2. Basises. Microwave multi-port circuits descriptors of the type of generalized S-matrix can have one of the following three types of discrete basis functions, waveguide modes, Floquet, and spherical (cylindrical) free space waves.

3. Recomposition scheme. It has been realized by means of generalized S-matrices in modification of two by two inconsecutive design while modeling microwave object. A fragment of decomposition scheme has recursive character, i.e. it, in turn, can to be an object. It allows to carry out independent operation with separate sections of decomposition scheme

4. Electromagnetic characteristics (EC). EC form hierarchic three-level structure of key EC, catalogued EC and composition. S-matrix and radiation pattern are key EC. Catalogued EC consist of a number of characteristics, derivative of key ones, such as field distribution on the apertures, coupling coefficients of diffracted waves, lateral radiation levels, etc. Composition EC are intended for using in forming the target-oriented functions for the solution of compromise optimization problems

5. Library of key elements (LKE). LKE is built by three-level scheme. Rigorous mathematical models of elementary scatterers form the lower level. Models of scatterers, being of components in the sense of decomposition principle, and having independent applications in microwave engineering, are formed at the second level Elements, realizing conveniently characteristics of separate microwave unit characteristics, being conveniently used, form the upper level.