Correlating Fully Anechoic Chamber to Open Area Test Site Measurements by the Normalized Site Attenuation

Correlating Fully Anechoic Chamber to Open Area Test Site Measurements by the Normalized Site Attenuation

The performance of a fully anechoic chamber (FAC) for radiated emission (RE) measurements has been evaluated using the normalized site attenuation (NSA). To do this, the antenna factor (AF) of a set consisting of nearly identical antennas has been calibrated at an open area test site (OATS). Appropriate correlation factor (CF) between the chamber and the OATS has been calculated. Results show that the performance of the chamber is fairly good with respect to the ANSI-limit except 41~66 MHz far vertical polarization and near 900 MHz for horizontal polarization.

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