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The methods of determination of complex permittivity of the substance filling the resonator on changing the frequency and steepness of adjustment of generator is stabilized by them is considered. Calculated ratios and the results of their experimental check are presented.
The possibility of creating a dictionary of signs for the radar recognition of the aerodynamic and terrestrial mechanical objects through the use of data about as dimensions of the objects, and the acoustic noise is analyzed. RCS of aerodynamic objects at resonant and short wavelengths as well as their speeds of revolution are estimated.
We predict strong amplification of terahertz radiation by the stimulated generation of plasmons in a planar array of graphene micro/nanocavities. Amplification drastically enhances due to lateral and vertical confinement of the plasmons in graphene micro/nanocavities and superradiant nature of electromagnetic radiation from the array.
Resonance detection of terahertz radiation by nanometer field-effect transistors GaAs/AlGaAs and transistor structure GaAs/InGaAs with large area slit grating gate has been measured. For these transistors peaks in the resonance photoresponse curve are tunable with gate voltages in accordance with the Dyakonov-Shur theory.
This paper discusses about the Gunn based self-oscillator. Itis stabilized by partially shielded quasi optical half-disc resonator. The resonator is done of Teflon and is the half-disk of 2R0 =39 mm and about 7.2 mm width. Its side curved surface and one of flat and wall are shielded with metal.
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