access icon free Broadband characterisation of engineered dielectric fluids using microstrip ring resonator technique

Characterisation results of the complex permittivity of select dielectric cooling fluids at room temperature and over a broad frequency range found using a low-loss printed circuit board microstrip ring resonator technique are presented. ANSYS HFSS, a finite-element full-wave electromagnetic simulation environment, was used to fit the simulated insertion loss to the calibrated measurements of the microstrip ring resonator in air and submerged in different dielectric fluids. The resulting frequency-dependent relative permittivity and loss tangent are provided up to 50 GHz for three dielectric cooling fluids: 3M™ Novec™ 649, 3M™ Novec™ HFE-7100 and 3M™ Fluorinert™ FC-72.

Inspec keywords: permittivity; microstrip resonators; finite element analysis; calibration; printed circuits; dielectric losses; dielectric liquids

Other keywords: calibrated measurement; insertion loss simulation; temperature 293 K to 298 K; 3M Novec HFE-7100; broadband characterisation; finite-element full-wave EM simulation environment; loss tangent; 3M Novec 649; permittivity; engineered dielectric cooling fluid; low-loss printed circuit board microstrip ring resonator technique; 3M Fluorinert FC-72; ANSYS HFSS

Subjects: Measurement standards and calibration; Waveguide and microwave transmission line components; Dielectric materials and properties; Finite element analysis; Printed circuits

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http://iet.metastore.ingenta.com/content/journals/10.1049/el.2014.0377
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