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

  • Kang, Tae-Weon (Korea Research Institute of Standards and Science, Electromagnetics Group) ;
  • Kim, Byung-Wook (Department of Electronics Engineering Sogang university) ;
  • Chung, Yeon-Choon (Expan Electronics Components Corporation) ;
  • Kim, Hyo-Tae (Department of Electrical and Electronic Engineering Pohang, University of Science and Technology)
  • Published : 2001.11.01

Abstract

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.

Keywords

References

  1. IEEE Intl. Symp. Electromagn. Compat. Practical statistical correlation of an rf absorber lined chamber an open area EMI test site S. Roleson
  2. IEEE Intl.Symp.Electromagn.Compat. Calibration of fully anechoic rooms and correlation with OATS measurements R. A. McConnel;C. Vitek
  3. IEEE Intl. Symp. Electromagn. Compat. Modeling and correlation of radiated emissions generated in a fully anechoic chamver and at an OATS D. Zhu;K. Y. Chok
  4. IEEE Intl. Symp. Electromagn. Compat. Statistical correlation between field strengths at an open area site and in an absorber-lined chamber L. Farber
  5. EMC'98 Symposium.(Wrozlaw,Poland) Comparing the measurement results in a fully anechoic chamber (FALC) to those on four different OATS D. Hansen;D. Ristau
  6. EMC'96Symposium.(Wrozlaw,Poland) Correlating fully anechoic to OATS measurements D.Ristau;D.Hansen
  7. IEEE Intl.Symp.Electromagn.Compat.(Atlanta,GA) OATS emission data compared with free space emission data F. B. J. Leferink;D. J. Groot-Boerle;B. R. M. Puylaert
  8. ANSI/IEEE C63.4 Methods of measurement radio-noise emissions form low-voltage electrical and electronic equipment in the range of 9 kHz to 40 GHz American National Standard Institute
  9. CISPR 16-2 Specification for radio disturbance and immunity measuring apparatus and methods,Part 2: Methods of measurement of disturbances and immunity International Electrotechnical Commission
  10. Draft prEN50147-3 Electromagnetic Compatibility Basic Emission Part 3: Emission Measurement in Fully Anechoic Rooms
  11. IEC 61000-4-3 Electromagnetic compatibility(EMC),Part 4: Testing and measurement techniques-Section 3:Radiated,radio-frequency, electromagnetic fiedld immunity test International Electrotechnical Commission
  12. ANSI C63.5-1998 American National Standard for Electromagnetic Compatibility-Radiated Emission Measurements in Electriomagnetic Interference(EMI) Control.Calibration of Antennas( 9 kHz to 40 GHz)