TABLE OF CONTENTS The degradation of the natural electromagnetic environment, which has been led to the edge of an ecological disaster and sometimes beyond, is the forgotten price that must be paid for our inconsiderate enthusiasm for "industrial revolution." As a result, we are reaching the situation where spending for the protection of the environment must sometimes exceed the investment in the systems causing the degradation.
The development of contemporary civilization is associated with consumption of more and more quantities of energy in forms that are applicable in technology, science, medicine and in our households. One form of energy with a rapidly growing role in everyday life is the energy of RF currents and fields. In some applications the energy is a final product (telecommunication or radiolocation), while in the others it is an intermediate form, designed to be transferred, for instance, into heat. In both cases there can be intentional or unintentional radiation of part of that RF energy, and, as a result, contamination of the whole environment and interference over a wide frequency range.
The natural electromagnetic environment can be understood as fields naturally occurring in the biosphere: the electric field (E), the magnetic field (H) and the electromagnetic field (EMF). Into this natural environment came global wireless communication systems and power systems based upon the alternating current. Recently, we have observed a trend to return to wire (fiberoptic) data transmission and to global satellite systems to meet the qualitative and quantitative necessities of telecommunication. As a result, the development...
