Article | REF: E1167 V2

Composite materials in electromagnetism - Characterization

Authors: André DE LUSTRAC, Gérard-Pascal PIAU

Publication date: February 10, 2019, Review date: October 1, 2020

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1. Objectives and choice of measurement technique

  • As early as 1940, Von Hippel defined measurement techniques for homogeneous materials. These include guided techniques (rectangular waveguide, coaxial guide, open guide, microstrip line, triplate, etc.), cavities, open or closed resonators and free-space techniques. The latter have only been introduced in the last forty years, after equipment manufacturers had defined and produced highly stable microwave sources and highly sensitive, highly dynamic receivers. We could also add radar-equivalent surface measurement techniques conducted in anechoic chambers, and non-destructive testing of materials.

    Von Hippel's work led to measurement...

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Objectives and choice of measurement technique