NUMERICAL-ANALYTICAL METHOD FOR SOLUTION TO THE PROBLEM OF ELECTROMAGNETIC WAVE RADIATION FROM FLAT WAVEGUIDE WITH FINITE NUMBER OF SLOTS

Abstract

Characteristics of radiation of electromagnetic waves from flat metallic waveguide filled with a dielectric and having the finite number of not equidistant parallel slots on one side of the waveguide excited by a fundamental waveguide wave are studied. This structure allows an accurate electrodynamical solution with minimum known radiophysical assumptions and as a model might correspond to real antennas fabricated of thin foiled dielectric having electrically long slots. The problem is solved by the method of analytical semi-inversion of original problem operator combined with the method of moments. The near and far radiation fields (Е and Н-field components), as well as power characteristics of reflected and propagated in the waveguide fields are analyzed.

Keywords

• analytical semi-inversion
• electromagnetic waves
• method of moments
• near and far radiation fields
• the fourier integral
• waveguide slot antennas