Electromagnetic Waves

Mobile communication, which is a crucial aspect of daily life, is based on electromagnetic waves, which transmit not only information but also energy. Electromagnetic waves can be transmitted wirelessly to facilitate wireless power transfer for charging vehicle batteries. Wireless charging with electromagnetic waves does not require the use of a plug point for convenience and safety. The British scientist Maxwell discovered that electromagnetic waves can be radiated, and such radiation is a natural phenomenon caused by the interaction between electricity and magnetism. Moreover, the British Scientist Faraday and French physicist Ampere found that magnetism generates electricity and that electricity generates magnetism, respectively. This chapter discusses electromagnetic wave radiation on the basis of Faraday’s theorem, Ampere’s theorem, and Maxwell’s equation.