Examples

Split Cylinder Resonator Temperature and Humidity Characteristics (28 GHz, MPI)

Measurement Results

EMラボのスプリットシリンダで温湿度特性を評価した例。誘電率（ε'/Dk）が湿度によって変化することが確認できる。
EMラボのスプリットシリンダで温湿度特性を評価した例。誘電正接（tanδ/Df）が湿度によって大きく変化することが確認できる。

Key Point!

  • Dielectric properties depend not only on temperature but also on humidity.
  • The degree of change due to temperature and humidity varies greatly by material.
  • It’s essential to evaluate materials under their intended environmental conditions!

The dielectric constant of plastics, and in particular the loss tangent, varies greatly not only with temperature but also with humidity, and the extent of this change varies depending on the material. There is a growing demand to evaluate the permittivity under a specified temperature and humidity environment, particularly for applications that are expected to be used in high-humidity environments. Here, we evaluate MPI, which is relatively susceptible to humidity.

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System Configuration

  • Split cylinder 28 GHz CR-728-TH
  • Split cylinder Temp & Hum test software : CR-TH
  • Keysight Streamline USB Vector Network Analyzer P5007A (44 GHz)

Samples

  • LCP 50 µm
  • MPI 50 µm

-Examples