Selection of dielectric materials
Dielectric resonators. Materials and components

Article REF: E1922 V3

Selection of dielectric materials
Dielectric resonators. Materials and components

Authors : Pierre FILHOL, Arnaud NABOULET, Aubry MARTIN

Publication date: May 10, 2026 | Lire en français

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3. Selection of dielectric materials

3.1 Frequency thermal stability coefficient

This coefficient $τ_{f}$ , known as TCF (Temperature Coefficient of Frequency), is critical for these devices. Natural materials such as alumina, silicates, and titanium oxide have temperature coefficients in the tens of ppm/K; therefore, the user must select the material with the $τ_{f}$ allows it to create a device whose frequency varies as little as possible across its temperature range. The...

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Bibliography

(1) - HAKKI (B.W.), COLEMAN (P.D.) - A dielectric resonator method of measuring inductive capacities. - IRE Trans MTT, n° 8, p. 402-10 (1960).
(2) - COURTNEY (W.E.) - Analysis and evaluation of a method of measuring the complex permittivity and permeability...

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