Effects of electromagnetic source type and orientation on signal falloff with distance
Abstract
In electromagnetic-compatibility testing it is usually assumed that the field measured by a vertical dipole antenna is produced by a vertical electric dipole source in the equipment under test. The author calls attention to the fact that vertical electric fields are also produced off the end of a horizontal electric dipole and broadside to a horizontal magnetic dipole. Similar effects hold true for horizontal field measurements. It is shown that failure to identify the type and orientation of the source can lead to errors in making corrections for ground-reflected signals when extrapolating measurements to larger distances.
- Publication:
-
1987 IEEE International Symposium on Electromagnetic Compatibility
- Pub Date:
- 1987
- Bibcode:
- 1987emco.symp..338G
- Keywords:
-
- Dipole Antennas;
- Electromagnetic Compatibility;
- Electromagnetic Measurement;
- Field Strength;
- Ground Effect (Communications);
- Electric Field Strength;
- Electromagnetic Fields;
- Electromagnetic Radiation;
- Standards;
- Communications and Radar