The electromagnetic field distributions calculated and obtained in the experiments on biological tissue are analyzed. A close agreement between calculated and experimental data is observed. It is shown that in the direction normal to the slot irradiator the electric field spreads far beyond the slot and in the direction along the slot the field is concentrated near the center of the slot and does not spread beyond the boundaries of the slot.

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The problem of maintenance of stability of the parallel multiplier of frequency (MF) with the help of of directed filters on connected smooth inhomogeneous transmission lines (CSITL,) is decided. For want of it parasitic peak modulation on an input of the multiplier completely is eliminated. Problems of the coordination of the diode with the generator and load also are considered. As a broadband agreeing circuit the sequential single irregular transmission line (ITL) with the smooth law of a modification of a wave drag is used. The topology of the doubler in microstrip performance is designed.

Calculation of the number of existing modes in an industrial MW installation is presented. We consider a resonator of the rectangular shape and give an example of the resonator design method providing the maximum number of modes.

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