Telecommunications and Radio Engineering

ISSN for PRINT: 0040-2508

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2001, Volume55

Issue 10-11

203 pages

Issue price - $394.00

Ye. M. Ganapolskii
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine, 12, Academician Proskura St., Kharkov 61085, Ukraine

Z.Ye. Yeremenko
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkov 61085, Ukraine

The properties of eigen-oscillation spectrum of a quasi-optical MW sphere resonator filled with randomly located sapphire particles have been experimentally studied at frequencies of 26 to 38 GHz. The particles may be of regular (as a cube) or irregular shape with characteristic sized comparable to the wavelength in the material. It has been found that such a resonator has a stochastic spectrum in which the properties characteristic of the quantum chaos are exhibited, namely, the "repulsion-of-levels" effect, the distribution of inter-frequency (IF) intervals close to Wigner distribution, closeness of spectral rigidity curve to the corresponding curve for the Gaussian orthogonal ensemble (GOE) of chaotic matrices. An effect on a resonator of a short EM field pulse with MW filling has been investigated. It has been found the resonator offers the capability of retaining the MW pulse energy in a relatively wide frequency range (over 10%) for quite long span of time. The explanation of this effect has been suggested.

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