Assessment of the impact parameters switching in the switching-modulation converters

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

Related Articles

Dynamics of frequency dependences of parameters of electric impedance of a person during dry fasting

Introduction The article considers the possibility of further development of the method of analysis of the parameters of electrical impedance to determine the current functional state of a person in various conditions of...

Prognostication of little size radio – controlled apparatus efficiency

Introduction. The achievement of radio electronics open the possibility creature of little size radio – controlled apparatus. Such apparatus application permits the fulfillment of tasks in extreme situations. The efficie...

Spectrum of discrete frequency sequence "Welch-10" and "Welch-16"

Amplitude, phase and energy spectrum of a discrete frequency signal in which the number sequences "Welch-10" and "Welch-16" as frequency coding sequences are used is considered.

Analysis of spectral and correlation characteristics of sounding signal with the triangular frequency intra-modulation

A signal with a symmetric linear frequency modulation and its properties are considered, analytic form of signal and its spectrum are shown, figures of amplitude and phase spectra of signal are drawn, figures of ambigui...

Application of the method of geometrical optics to determine the effect of frequency dispersion on the propagation of magnetostatic waves in the delay line

Applying the method of geometrical optics, it is shown that for a dispersive delay line, provided that the parameters of pulse linear FM and dispersion parameters of MSW coordinated so that the RF pulse is compressed, th...

Download PDF file
  • EP ID EP308875
  • DOI 10.20535/RADAP.2014.57.83-91
  • Views 95
  • Downloads 0

How To Cite

V. Kutsenko, A. Yanenko, K. Shevchenko (2014). Assessment of the impact parameters switching in the switching-modulation converters. Вісник НТУУ КПІ. Серія Радіотехніка, Радіоапаратобудування, 0(57), 83-91. https://europub.co.uk./articles/-A-308875