Correcting OATS antenna factors for small fully anechoic chambers

Antenna correction factors have been experimentally determined inside a 3 m fully anechoic chamber. In the frequency range of 30-1000 MHz deviations to the manufacturer data, taken from a 10 m OATS, of up to 5 dB have been found in the low frequency range. In the high frequency range the calibration for horizontal polarization was strongly affected, in a narrow frequency band, by the laminated, wooden turntable plate at a 0.8 m height with up to 20 dB.

[1]  R. A. McConnell,et al.  Calibration of fully anechoic rooms and correlation with OATS measurements , 1996, Proceedings of Symposium on Electromagnetic Compatibility.

[2]  R. E. Zich,et al.  On the unwanted effects on the radiated emissions and susceptibility measurements due to the introduction of a wooden table , 1999, 1999 International Symposium on Electromagnetic Compatibility (IEEE Cat. No.99EX147).