Directivity of the test device in EMC measurements

We present a statistical theory for estimating the directive characteristics of unintentional emitters based and the electrical size of the device. We compare this theory to directivity derived from pattern measurements in an anechoic chamber. We also use this theory to predict the maximum radiated fields based on total radiated power measurements in the reverberation chamber.

[1]  Dennis G. Camell,et al.  Evaluation of the NASA Langley Research Center mode-stirred chamber facility , 1999 .

[2]  M. O. Hatfield,et al.  Complications in correlatability between test techniques due to directional emission patterns , 1999, 1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261).

[3]  J. Hansen.  Spherical near-field antenna measurements , 1988 .

[4]  G. Latmiral,et al.  Use of a Reverberating Enclosure for Measurements of Radiated Power in the Microwave Range , 1976, IEEE Transactions on Electromagnetic Compatibility.

[5]  P. Corona,et al.  In Order to Evaluate in Reverberating Chamber the Radiated Power of Transmitting Equipments , 1981, 1981 IEEE International Symposium on Electromagnetic Compatibility.

[6]  G. Latmiral,et al.  Performance and Analysis of a Reverberating Enclosure with Variable Geometry , 1980, IEEE Transactions on Electromagnetic Compatibility.

[7]  Galen H Koepke.  Standard spherical dipole source , 1991 .

[8]  J.D.M. Osburn,et al.  A process for the analysis of the physics of measurement and determination of measurement uncertainty in EMC test procedures , 1996, Proceedings of Symposium on Electromagnetic Compatibility.

[9]  M. Backstrom,et al.  Directivity of equipment and its effect on testing in mode-stirred and anechoic chamber , 1999, 1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261).

[10]  Dennis G. Camell,et al.  Radiated emissions and immunity of microstrip transmission lines: theory and reverberation chamber measurements , 1996 .

[11]  S. Clay.  Improving the correlation between OATS, RF anechoic room and GTEM radiated emissions measurements for directional radiators at frequencies between approximately 150 MHz and 10 GHz , 1998, 1998 IEEE EMC Symposium. International Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.98CH36253).