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Cavity Resonator for Dielectrics Rods

Rods

High-accuracy dielectric characterization of solid rods up to 3.1 mm in diameter.

  • Frequency range:
 10 & 23 GHz, 19 GHz, 24 GHz
  • Dielectric constant:
 Dk = 1 – 100 (achievable accuracy: δDk < 0.5%)
  • Loss tangent:
 Df > 5×10-5 (10 & 23 GHz), 10-4 (19, 24 GHz) (achievable accuracy: δDf < 2%)
  • Temperature:
 10 – 100 °C
  • Software-controlled measurement

Fused Silica

Dielectric Constant of Fused Silica
Loss tangent of Fused Silica
Fig. 1. Frequency dependence of the dielectric constant (left) and loss tangent (right) of fused silica measured at approximately 10 and 20 GHz. Error bars indicate measurement uncertainty.

PTFE – Temperature Dependence

Temperature dependence of Dielectric Constant of PTFE
Temperature dependence of Loss tangent of PTFE
Fig. 2. Temperature dependence of the dielectric constant (left) and loss tangent (right) of PTFE over the temperature range of 20 – 90 °C. Results obtained using cavity resonators operating at 10 and 23 GHz are compared with TE01d resonator measurements. Error bars indicate measurement uncertainty.

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Material Measurement Procedure

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