Читать книгу Antennas - Yi Huang - Страница 31

In this chapter, we have introduced the concept of antennas, briefly reviewed antenna history, and laid down the mathematical foundations for further study. The focus has been on the basics of EMs, which include electric and magnetic fields, EM properties of materials, Maxwell’s equations, and boundary conditions. Maxwell’s equations have revealed how electric fields, magnetic fields, and sources (currents and charges) are interlinked. They are the foundation of EMs and antennas.