Assessment of the impact parameters switching in the switching-modulation converters
Journal Title: Вісник НТУУ КПІ. Серія Радіотехніка, Радіоапаратобудування - Year 2014, Vol 0, Issue 57
Abstract
Introduction. The switching-modulation commutator (SMC) in the front part is used in design of the highly-sensitive radiometric systems with modulation type. These devices may restrict a band of the input broadband signals from the object of interest. This leads to a reduction of the sensitivity and accuracy. The purpose is to perform calculations of the optimal parameters of SMC using generalized complex values (GCV). Main body. The transients in the shoulders of SMC under the impact of control signal F0(t), divergence of values of the reflectivity (Г) and transfer coefficient (S) in the different channels, also radio-thermal parasitic noises of the adjacent elements may affect the value of errors that are made by SMC are shown in this article. Estimations of the GCV values dependence are performed under the deviation of the SMC parameters by ±10%. Conclusions. Using SMC in the front part of the radiometric system we can obtain the maximum ratio “signal-noise” that provided by wavelength 1.9 mm, equality of the modules of SMC elements with distinction of its phase values. The modules of the GCV from antennas X1 and X2 are differ in 2.1 times and the phase parts – in 1.3 times. The sensitivity of the GCV is different towards to the deviation (±10%) of the optimal parameters (module and phase parts) of the RF circuits (radiometric devices) and could vary from hundredth of a percent to 90%.
Authors and Affiliations
V. Kutsenko, A. Yanenko, K. Shevchenko
Keywords
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- EP ID EP308875
- DOI 10.20535/RADAP.2014.57.83-91
- Views 80
- Downloads 0
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