Title :
Broadband measurement of complex permittivity by an open resonator at 20–40GHz
Author :
Yongliang Yao ; Hongling Cui ; Junhu Wang ; En Li ; Bingjie Tao
Author_Institution :
Sch. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
In this paper, an open resonator operates at a broadband of 20-40GHz is provided to measure complex permittivity. It is a hemispherical open resonator and two coupling rings are placed in the centre of spherical mirror to put energy in and out of the resonator. The relationship between quality factor and energy diffraction from sample edge has been analyzed in detail in this paper. What´s more, the relationship between energy diffraction and sample diameter are offered with the use of matlab, which is good for preparation of sample. Finally, a quartz disk and a Teflon disk were measured by the provided open resonator, and the results show that this measurement system has a great performance at frequency of 20-40GHz and possess reliable repeatability.
Keywords :
Q-factor; permittivity measurement; quartz; resonators; Matlab; Teflon disk; broadband measurement; complex permittivity; coupling ring; energy diffraction; frequency 20 GHz to 40 GHz; hemispherical open resonator; measurement system; quality factor; quartz disk; sample diameter; spherical mirror; Cavity resonators; Dielectric loss measurement; Diffraction; Loss measurement; Permittivity; Permittivity measurement; edge diffraction; open resonator; quality factor; ring couplings; sample diameter;
Conference_Titel :
Communication Problem-Solving (ICCP), 2014 IEEE International Conference on
Print_ISBN :
978-1-4799-4246-6
DOI :
10.1109/ICCPS.2014.7062271
