Sensitivity analysis of the phase angle of the reflection coefficient of waveguide measurement cell in the case of low loss dielectric

Abstract

In problem for rectangular waveguide segment with dielectric layer parameters measurement we must analyze sensitivity these parameters to changes some influencing values, like segment length, wavelength and specimen dielectric permittivity. Analyze module and phase angle of reflection coefficient sensitivity for dielectric without loss and analyze module and phase angle of reflection and transmission coefficients sensitivity for low loss dielectric are made at present day. But we must know reflection coefficient phase angle sensitivity of waveguide measurement cell in case of low loss dielectric in some applied problems. In article this problem is solved by help of sensitivity coefficients. Analytical formulas for these coefficients are obtained and their frequency dependencies for segment length and complex dielectric permittivity changes are analyzed also. Measurements at resonant frequencies appropriateness are certified. But we obtain more accuracy, when we use longer specimen than shorter specimen, and specimen length is limited by measurement devices sensitivity even so.

Authors and Affiliations

A. Semenov, O. Semenova, V. Chuhov

Keywords

Related Articles

Ultra wideband horn antenna with operating frequency range 1–20 GHz and low side lobe level

Results of numerical research and optimization of electric characteristics of ultra wideband double ridged horn antenna are presented. End-fire radiation patterns with side lobe level less than −10 dB and VSWR<1.9 ove...

The determination of power of linear periodically-time-variable circuits in an environment of the system of software functions MAOPCs

The paper presents two new the software functions of the system of software functions MAOPCs. The first software function is designed to determination the instantaneous power in the branch of linear periodically-time-var...

Peculiarities of lowintensity microwave radiation of materials for physiotherapy

Introduction. The results of low-intensity EMI of natural materials studies used for thermal physiotherapy are reviewed. Research results. In a result of radiometric measurements of weak signals at frequency of 45 GHz a...

Adaptive filtration of parameters of the movement UAV according to sensor networks based on measurements of the received signal strength

Introduction. In modern conditions increasingly important begin to play unmanned aerial vehicles (UAVs), which give rise to a new class of threats. This leads to the need to develop security systems that solve tasks of d...

Optimal filtering of speech signal on pres­ence of correlated noise

It use method of Kalman filtering optimal algorithm of speech signal filtering to synthesize on the presence of correlated noise. Structure scheme of optimal filter is proposed. Algorithm is analyzed on the test speech s...

Download PDF file
  • EP ID EP309313
  • DOI 10.20535/RADAP.2011.45.130-139
  • Views 71
  • Downloads 0

How To Cite

A. Semenov, O. Semenova, V. Chuhov (2011). Sensitivity analysis of the phase angle of the reflection coefficient of waveguide measurement cell in the case of low loss dielectric. Вісник НТУУ КПІ. Серія Радіотехніка, Радіоапаратобудування, 0(45), 130-139. https://europub.co.uk/articles/-A-309313