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In order to fulfill high demands in the recent computer and communication technologies, highly-efficient devices and materials are being developed day by day. It is crucial to measure the electrical characteristics of these materials for new developments, especially the dielectric properties.

The dielectric measurement service offered by AET Associates, Inc., provides accurate results using the most suitable method according to size and shape of the sample material. Accuracy is achieved by combining a high Q cavity, a highly accurate measurement algorithm and 3D electromagnetic simulation software.

  • Substrate materials for high-speed digital and microwave circuits
  • Low loss dielectrics used for filters and dielectric antenna
  • Thin film materials, Multilayered structure materials, New materials
  • Semiconductor materials
  • Medical Electronics
  • Chemicals
  • Powders
  • Liquids
※There are other materials we can measure. Please contact AET.
Measuring Methods
MaterialMaterial ShapeFrequencyFeature
Measuring Method
SolidStrip1~10GHz Accurate measurement in the microwave range.
(Compliant standard: JIS C2565, ASTM D2520, IEC60556)
Resonant Cavity
(TM mode)
Thin film10~40GHz The gap for inserting the measurement sample is fixed, and the measurement stability is superior to the pinching method.
(Compliant standard: JIS R1641, IPC-TM650, IEC62562)
Resonant Cavity
(TE mode)
thickness:> 0.5mm0.8~18.4GHz Non-destructive measurement of the permittivity of samples with a flat surface.
(PATENT No. 3691812)
Open Coaxial Resonator
Plate10MHz~1GHzBroad band and continued measurement frequency range; 10MHz~1GHz.
Powder⁄LiquidRequired quantity:
1~10GHz The high-precision measurement is realized by the resonator of dedicated design.
The filling factor of powder is calculated from the true density information and the dielectric constant of the powder itself is calculated.
Resonant Cavity
(TM mode)
Liquid etc.30cc200MHz~10GHzBroad band and continued measurement frequency range; 200MHz~10GHz.
Coaxial Reflection
CableCable2.45~15GHzLow-delay and low-loss wire materials, such as foamed PTFE, in product form can be measured with high accuracy.
Resonant Cavity
(TM mode)
High dielectric material with low lossCylinder~20GHz Measurement of low loss dielectric materials with tanδof 0.001 or less. (Compliant standard: JIS R1627, IEC 61338-1-3)
Dielectric Resonator

Highly Accurate Simulation by a 3D electromagnetic-field simulation software




20326 Via Volante, Cupertino, CA 95014, U.S.A.
TEL: +1-408-996-1760    FAX: +1-408-996-1962

Japan Headquarter

AET, Inc.
2-7-6 Kurigi, Asaoku, Kawasaki-city, Kanagawa, Japan
TEL: +81-44-980-0505    FAX: +81-44-980-1515