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Elaboration results for a near-field microwave microscope are presented. The main parameters of the microscope are given. The possibility of its application for investigation of heterogeneous dielectrics and nondestructive quality inspection in the microwave range is assessed. An open-ended coaxial waveguide is used as a probe.
A way to reduce phase errors of the measured antenna near field for antenna pattern (AP) restoration is considered. The AP restoration problem in the near field measurement data exists in the microwave range. The problem is related to the limited opportunities for exact phase measurement.
The results of development of the microwave noise meter of amplitude, frequency and phase parameters for microwave signal frequency range 78,33-118,10 GHz are presented. Block scheme of the meter is described and the experimental results are given.
The results of elaboration of measuring super high frequency devices parameters set are represented. The measuring set contains a generator, an indicator and a circular polarization brancher (CPB) realized on a metal-dielectric strip waveguide (MDSW).
The description of the design principles of computer-aided panoramic vector-analyzer based on the standard P2-60...P2-69 series meter and PC is given. The basic metrological characteristics are presented.
The problem of formation of high-current beams of charged particles demands the solution of self-consistent nonlinear electrodynamic problems. The computing complexities increase, if there are the following factors: strong nonlinear effects, unstable modes, and virtual cathode. The development of numerical-analytical methods for the solution of such problems is difficult. To overcome this the method...
The generator based on the back wave oscillator (BWO) with high speed (10 MHz/mcs) and high precision (10/sup -4/) sweeps is elaborated. It can be realized in any part of the frequency range where BWO operates (37-1500 GHz) Accuracy of ramp sweep mode of generator is near 100 kHz under at the sweep range 1 GHz and its accuracy of continue sweep mode is as in a frequency synthesis regime. Under this...
Self-modulating regimes of generation in a powerful 10 /spl mu/s X-band BWO was studied theoretically and experimentally. The sequence of generation regimes and corresponding bifurcation values observed for a current increase were in good agreement with the simulation results. Finally, chaotic self-modulation was established at a current of 120 A, a power of 2 MW and relative spectral width of 4%.
The processes of local degradation of conductive microstructures of integrated chips are surveyed for the effect of powerful electromagnetic fields. The time of development of nonreversible degradation processes is identified and the geometrical size of local sites of metal film burn-up is detected.
A Front Survey Automobile Radar system with frequency modulation (FM) of a sounding signal is esteemed. Problems of creation of similar radar systems are discussed. Allowing experience of scientific collective on creation of the radar system of a forward view, the outcomes of experimental researches of the automobile radar system with FM of a new generation are resulted in the report. The outcomes...
The problems of television measurement systems design in which the visualization of monitoring objects is carried out under action of microwave fields energy are surveyed. The used measuring methods and cameras, the results of research, of systems metrology performance are discussed and perspectives of their application are defined.
The possibility of radar system using of the space view for piping monitoring is esteemed in this report. The problem of such radar system application for remote control of pipeline attitude in a real time is discussed. Characteristics of radar accuracy are investigated. A conclusion about the feasibility of the radar system application for high-precision pipeline monitoring is made.
This paper deals with research efforts relating to radar sensors using millimeter wave technology, in particular to autonomous radars which are used for forward looking and to detect the distance and relative velocity of car ahead. The fundamental requirements to on-board radar equipment are formulated. Some experimental results of this radar research are presented.
The results of laser system positioning units and details development in aircraft are presented. The installation accuracy is no more than 5 microns. This accuracy is reached by means of the square photoreceiver. The test results of the device on benches of the Kazan aircraft industrial corporation are adduced.
The accent on efficiency of usage of UHF energy for processing of some materials is made. A description of laboratory installation for UHF materials processing is given. The main problems and directions of learning of the influences of the UHF fields on the substance are pointed out.
There is a major interest in Tatarstan toward development of microwave process technologies in agriculture. Scientists at the Research and Development Center of Applied Electrodynamics and workers at the Ministry of Agriculture actively work in this field. The use of microwave process technologies is based on the effect of electromagnetic fields on biological plants. Using microwave process technologies...
Theoretical and experimental research of possibility to detect of near-field (quasi-static) component of thermal radio emission of lossy media has been carried out and prospects of application of near-field radiometric measurements for temperature profile retrieval are shown.
The technique of microwave parameters determination of substances based on application of high Q "whispering gallery" oscillations in a quasi-optical spherical resonator is reviewed. The dielectric permittivity values of isotropic quartz and transformer oil in the eight-millimeter wavelength band are obtained.
Analysis of the possibilities of a complex dielectric permittivity determination on the measurements of the complex input impedance of the simplest antennas (dipole or monopole) inculcated in a relatively dense dissipative medium is performed. It is shown that the method of impedance dielectrometry allows us to avoid the shortcomings peculiar to the microwave technologies.
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