Title :
A different picture of radiation
Abstract :
A major difference between radiating and non-radiating fields is that the level of a nonradiating fields decreases with the third power of the radius (volume), while the level of a radiating field decreases with the first power. The analysis presented here provides evidence as to how and why this occurs. The conclusions are somewhat surprising. It has been accepted as fact that waves cannot move faster than the speed of light. However, it is only the propagation of signals in the radial direction that is limited to the speed of light. Tangential waves travel much faster. Electromagnetic waves are not seen to "break away", but to vary with the high tangential velocity of the field, producing a compression of the wave and a corresponding time delay with distance.
Keywords :
antenna radiation patterns; electromagnetic waves; wave equations; dipole antenna; electromagnetic waves; lateral motions; nonradiating fields; radial direction; radiating fields; radiation equations; rotating motions; speed of light; tangential waves; Delay effects; Dipole antennas; Electromagnetic fields; Electromagnetic propagation; Electromagnetic scattering; Equations; Frequency; Optical propagation; Welding;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2003. IEEE
Conference_Location :
Columbus, OH, USA
Print_ISBN :
0-7803-7846-6
DOI :
10.1109/APS.2003.1219889