Аннотации:
The effect of the thermodynamic strain-deformed states of a cavity antenna on its pattern and antenna matching with a feeder are investigated. The low single-mode cylindrical resonator with the aperture in the form of partially transparent flat surface is excited through coupling holes by the second resonator placed inside the first one. It is supposed that the wall with the radiating holes is heated up by an outer heat source. The rest antenna part is cooled by the air free convection. The thermodynamic problem is solved by the Finite Element Method (FEM), and the electrodynamic one is solved by the Finite Integration Technique (FIT). The results of the numerical study for the antenna with aperture diameter of 1.85 wavelength are presented. © 2011 IEEE.