Advantages of slowed electromagnetic waves

The features of slowed electromagnetic waves and their advantages are considered. Examples of new methods and devices combining the advantages of relatively high and relatively low frequency bands are shown. Concentration of an electromagnetic field caused by wave deceleration leads to a significant increase in parameters of processes and devices based on slowed wave application. It is shown that coupled slow-wave structures application allows electric and magnetic fields to split in transverse direction which leads to an additional improving in parameters and characteristics (the sensitivity and interaction efficiency increase, new processes developing, etc.). The possibilities of slowed wave application for micro-miniaturization of RF and microwave passive elements, for measurements, electromagnetic heating, and for physiotherapy are considered.