EAS03 is an ideal solution for evaluation of electric wave absorbers and shield materials. Unlike coaxial or waveguide type, errors by air gap do not occur because the sample is not capsulated in the fixture.
Despite its compact dimensions, your sample can be measured with plane wave because the lenses are attached to the antennas, providing high measurement accuracy.
Samples can be smaller than conventional systems because they can be placed in the vicinity of the antennas.
It is also suitable for ITS/ETS applications, and supports vertical incidence when using a vector network analyzer.
Transportable type is available for heavy or immovable objects such as concrete wall or asphalt road.
Reasons for high accuracy
• Its plane wave is in phase with sample face.
• Its parallel beam prevents interferences of unnecessary electric wave.
• An anechoic chamber is not required.
• Wide dynamic range, more than 50dB with gating and 40dB without.
Standardization
JIS R1679 : 2007
IEC 62431 : 2008
H.Suzuki, Others, "Free space measurmet method with parallel electromagnetic wave beam by using dielectric lenses and horn antennas for reflectivity of electromagnetic absorbers in millimeter waves" IEICE Trans, electro., Vol. E89-C, No.1 Jan.（2006）24-29
* The higher the measurement frequency is, the smaller the samples can be.
* By applying a gate beyond the lenses closer to the sample after calibration, it allows you to measure electromagnetic absorption rate above –50dB with a standard vector network analyzer.
