Abstract
A modified Nicholson – Ross – Weir method was used to determine complex parameters and dielectric permittivity of ceramic materials in the range 78.33–118.1 GHz. The measuring equipment is a meter of complex reflection and transmission coefficients, a waveguide measuring canal with a special measuring cell, consisting of two irregular waveguides and a waveguide chamber between them, which provides insignificant influence of higher-order modes. The dependences of the amplitude and phase of the reflection and transmission coefficients on frequency were obtained experimentally for fluoroplastic and three ceramic samples in the frequency range 78.33–118.1 GHz. The obtained S-parameters are processed according to an algorithm that includes their averaging based on the Fourier transform in order to obtain the values of the dielectric permittivity. Fluoroplastic was used as a reference material with a known dielectric constant. The dielectric constant of fluoroplastic has a stable value of 2.1 in the above mentioned frequency range. The dielectric constant of sample No. 1 varies from 3.6 to 2.5 at the boundaries of the range, sample No. 2 – from 3.7 to 2.1, sample No. 3 – from 2.9 to 1.5. The experimental data are in satisfactory agreement with the literature data for other frequencies taking into account the limits set by the measurement uncertainty.
Highlights
Effect of the BN content on the thermal shock resistance and properties of BN/SiO2 composites fabricated from mechanically alloyed SiBON powders
Gusinsky A.V., PhD, Associate Professor, Head at the Center 1.9 of R&D Department of the Belarusian State University of Informatics and Radioelectronics
Summary
ОПРЕДЕЛЕНИЕ S-ПАРАМЕТРОВ И ДИЭЛЕКТРИЧЕСКОЙ ПРОНИЦАЕМОСТИ ОБРАЗЦОВ КВАРЦЕВОЙ КЕРАМИКИ. Для определения комплексных параметров и диэлектрической проницаемости керамических материалов в диапазоне 78,33–118,1 ГГц применен модифицированный метод Николсона – Росса – Вейра. Экспериментально получены зависимости амплитуды и фазы коэффициента отражения и передачи от частоты для фторопласта и трех керамических образцов в диапазоне частот 78,33–118,1 ГГц. Диэлектрическая проницаемость фторопласта имеет стабильное значение 2,1 в вышеуказаннном диапазоне частот. Диэлектрическая проницаемость образца No 1 варьируется от 3,6 до 2,5 на границах диапазона, образца No 2 – от 3,7 до 2,1, образца No 3 – от 2,9 до 1,5. Ключевые слова: векторный анализатор цепей, измерительная ячейка, диэлектрическая проницаемость, коэффициент отражения, коэффициент передачи, метод Николсона – Росса – Вейра. Определение S-параметров и диэлектрической проницаемости образцов кварцевой керамики в миллиметровом диапазоне длин волн. Belarusian State University of Informatics and Radioelectronics (Minsk, Republic of Belarus)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
