3D printed re-entrant cavity resonator for complex permittivity measurement of crude oils

Mohammed, A.; Hart, Abarasi; Wood, Joseph; Wang, Yi; Lancaster, M.J.

doi:10.1016/j.sna.2020.112477

Cited by 8 publications

(3 citation statements)

References 21 publications

(34 reference statements)

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“…It is essential to accurately test the permittivity and loss tangent of low-loss dielectric materials to meet the application requirements of various fields. Generally, the permittivity and loss tangent of low-loss dielectric materials are mainly measured by the resonant cavity method, including microstrip resonant cavities [ 12 , 13 , 14 ], rectangular resonant cavities [ 15 , 16 , 17 , 18 ], cylindrical resonant cavities [ 19 , 20 , 21 ], and re-entrant cavity resonators [ 22 ]. For example, Federico Gabriele et al [ 23 ] provided relative permittivity measurements for emerging 5G and beyond applications operating at high frequencies based on resonant cavities with the substrate-integrated waveguide technique.…”

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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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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“…Additive manufacturing (AM) has been utilised in fabrication of microwave devices such as cavity based resonator sensors, filters and antennas [1][2][3][4][5]. The technology has been used in producing structures of complex nature in separate parts or in a monolithic form giving them advantage over other fabrication methods [2].…”

Section: Introductionmentioning

confidence: 99%

“…The technology has been used in producing structures of complex nature in separate parts or in a monolithic form giving them advantage over other fabrication methods [2]. For example: a 3D printed polymer sensor made using stereolithographic apparatus (SLA) process and coated with copper was presented in [3]. Other examples include a 3D printed metallic filter fabricated by micro laser sintering [4] and 3D printed horn antennas [5].…”

Section: Introductionmentioning

confidence: 99%

Conductivity measurement using 3D printed re-entrant cavity resonator

Mohammed

Skaik

et al. 2022

Meas. Sci. Technol.

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A technique for measuring effective conductivity of conductor materials using 3D printed re-entrant cavity resonator is proposed. An analytical formula for the extraction of the effective conductivity has been derived in relation to energy stored in the volume of the cavity geometry. A method of resonant cavity characterisation of material based on microwave losses is utilised for the measurements. The approach offers a simplified analytical method and also supports the measurements of sample with arbitrary thickness. Samples produced from three different manufacturing processes of CNC and 3D printing, made of aluminium, copper and stainless steel were measured to demonstrate the method. The 3D printed and copper coated polymer sample is considered as reference material for the measurements. The measured results have shown that the copper coated polymer sample have similar conductivity with that CNC copper. This signifies the good finishing, low surface roughness and quality of copper coating used in 3D printed polymer device.

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