The investigation of wave propagation through the multilayer medium with barrier nonuniformities
I. V. Antonets 1, V. G. Shavrov
2, V. I. Shcheglov 2
1 Syktyvkar State University,
Syktyvkar, Russia 2Kotel’nikov Institute of Radio Engineering and
Electronics, Moscow, Russia
2
Kotelnikov Institute of Radio-engineering and Electronics of RAS,
Moscow, Russia
The paper is received on January 13, 2015
Abstract. The task of wave
propagation through multilayer structure containing barrier and periodic
nonuniformities is solved by exclusion method. The frequency dependencies of
reflection, transmission and absorption coefficients are found. The periodic
multipetal character of frequency dependencies and its connection with barrier
parameters is found. It is investigated the wave extension in structure with
periodic nonuniformity on the model of multibarrier medium. On each period of
coefficient frequency dependencies it is found the separation of single narrow
petal accompanied by the suppression of side petals. When the quantity of
barriers is increased the central frequency of petal is increased and its
amplitude is decreased. These changing are the stronger the distinction between
the velocities inside and outside of barriers is more. The secondary modulation
effect of frequency dependencies is found. For interpretation of this effect it
is proposed the hypothesis about the beating between the resonances inside and
outside of barriers. It is shown the possibility of generalization on the case
of electromagnetic waves propagating in conducting media with permittivity and
permeability.
Key words: wave propagation,
multilayer nonuniform structure.