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Reflectivity Measurements of Commercial Absorbers in the 200

Authors:
Jussi Säily, Juha Mallat, Antti V. Räisänen
Abstract:
Reflection properties of several commercial absorbers measured at frequencies of 200, 300, 400, 500, and 600 GHz with different incident angles are presented in this paper. The measurements were done using a specially built test setup with a vector network analyzer and a linear scanner. The presented results show the measured peak reflectance values, i.e., the maximum reflection from the object. The reflectance requirement for absorbers used in compact antenna test ranges (CATRs) is usually –40 dB for all incident angles. According to our measurements, this is not possible with the tested absorbers over the whole frequency range.
Categories:
Measurements & Calibration
Year:
2001
Session:
9
Full-text:
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Page Number(s):
383-389