The hibryde method of electrodynamic analisis of antennas systems
DOI:
https://doi.org/10.1109/ICATT.1997.1235118Abstract
It is necessary to take into account the influence of flying apparatus (FA) body on radiation characteristics while electrodynamics analysis of nondirectional antennas. One of the methods, which allows to take into account the size and geometrical peculiarities of the FA body is the method of integral equations (IE). IE are successfully used in thin-wired approximation for antenna made from electrically thin conductor (vibrator, spiral, etc.) with the account of approximation possibility of the body surface with net. However, big-space sizes don't allow to carry out full-scaled modelling based on the IE method. It is difficult to apply the asymptotic methods too, because the system "antenna-body of FA" contain differently scaled elements, which are comparable or less than the wave length.
It is proposed to use the method of IE with the method of the finite-difference time-domain (FDTD) for the solution of similar problem. The IE method, which is widely used for calculation of amplitude-phase current distribution along the conductor structure and far-field characteristics, is applied for calculation of antenna near fields.
References
Mei, K.K. On the integral equation of thin wire antennas. IEEE Trans., 1965, Vol. AP-13, No. 5, p. 374-378.
Yee, K.S. Numerical solution of initial boundary value problems involving Maxwell’s equations in isotropic media. IEEE Trans., May 1966, Vol. AP-14, P. 302-307.
