Title :
Temperature effect on cavity antenna parameters
Author :
Voytovich, N.I. ; Ershov, A.V. ; Bukharin, V.A. ; Repin, N.N.
Author_Institution :
Southern Ural State Univ., Chelyabinsk, Russia
Abstract :
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.
Keywords :
antennas; finite element analysis; resonators; antenna matching; cavity antenna parameters; finite element method; finite integration technique; single-mode cylindrical resonator; temperature effect; thermodynamic strain-deformed states; Antenna radiation patterns; Aperture antennas; Cavity resonators; Electrodynamics; Heating;
Conference_Titel :
General Assembly and Scientific Symposium, 2011 XXXth URSI
Conference_Location :
Istanbul
Print_ISBN :
978-1-4244-5117-3
DOI :
10.1109/URSIGASS.2011.6050422
