Dual-Mode Substrate Integrated Waveguide Circular Cavity Filter Designed at Q-Band

Yang, Xian‐Long; Zhu, Xiao‐Wei; Wang, Xiang

doi:10.1109/icmmt49418.2020.9386439

Cited by 4 publications

(1 citation statement)

References 11 publications

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“…Kopyt Pawel et al [ 25 ] used a combination of several split-column dielectric resonators and a cylindrical cavity (supporting multiple TM 0n0 modes in the microwave band) to measure the permittivity and loss tangent of selected isotropic and anisotropic laminar materials, proposing a more accurate method to measure the out-of-plane component of the complex permittivity of laminar samples. Of course, the most accurate method for measuring electromagnetic parameters of low-loss dielectric materials is the TE 011 mode cylindrical cavity (high Q) method [ 26 , 27 , 28 ] due to its higher Q value compared to other resonant modes. Generally, the high Q cavity method requires a relatively large sample diameter.…”

Section: Introductionmentioning

confidence: 99%

A Novel Strategy for Detecting Permittivity and Loss Tangent of Low-Loss Materials Based on Cylindrical Resonant Cavity

Zhou

Chen

et al. 2023

Sensors

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Accurate measurement of the permittivity and loss tangent of low-loss materials is essential due to their special applications in the field of ultra large scale integrated circuits and microwave devices. In this study, we developed a novel strategy that can accurately detect the permittivity and loss tangent of low-loss materials based on a cylindrical resonant cavity supporting the TE111 mode in X band (8–12 GHz). Based on an electromagnetic field simulation calculation of the cylindrical resonator, permittivity is precisely retrieved by exploring and analyzing the perturbation of the coupling hole and sample size on the cutoff wavenumber. A more precise approach to measuring the loss tangent of samples with various thicknesses has been proposed. The test results of the standard samples verify that this method can accurately measure the dielectric properties of samples that have smaller sizes than the high Q cylindrical cavity method.

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