Persons

The one-dimensional waveguide photonic structure - the photonic crystal with the controlled frequency characteristics - has been implemented. The tuning of the center frequency of the low-loss transmission window of the photonic crystal was achieved by selecting the parameters of irregularity I in the photonic crystal, while the control of the transmission value at selected frequency was performed by changing voltage on Pin-diode. The possibility of implementing the microwave device in the X-band with the pass band of 70 MHz at the 3 dB-level and with the transmission coefficient adjustable in the band from 1.5 dB to 25 dB with changing the voltage on PIN-diode from 0 to 700 mV, based on the waveguide photonic crystal, has been shown.

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The impact of continuous midrange power microwave fields on the characteristics of the square-wave RC -generator with the multi-channel buffer circuit and matching circuit, formed on the 74HC14 series inverters with the built-in Schmitt trigger, has been investigated. It has been shown that the increasing power of electromagnetic radiation reduces the pulse width and, hence, increases the frequency of the RC -generator output signal. The RC -generator output signal sensitivity to the impact of the microwave signal is decreased with an increase of both, the supply voltage and the microwave signal power. It has been concluded that the output characteristics of the digital radioelectronic systems are the most susceptible to the impact of the microwave signal while using the semiconductor integrated circuits, which are part of these systems, as the active elements and while choosing the operation modes of DC voltage circuits, significantly different from nominal ones.

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