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Electromagnetic wave propagation

Electromagnetic wave propagation

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Propagation of Radiowaves — Recommend this title to your library

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This chapter introduces the principles of electromagnetic theory which are essential to an understanding of radiowave propagation. Where possible, a practical engineering approach has been adopted. However, the material has been structured to provide those with a more mathematical background with a satisfactory account of the subject, together with references to further reading material. Initially, propagation between two antennas in free space is considered by means of power flux concepts. This enables important ideas such as free-space path loss, antenna gain and effective aperture to be introduced. Maxwell's equations are presented. and plane-wave solutions are derived as a means of introducing polarisation, wave impedance and electromagnetic power flow. Finally, radiation from a current distribution is examined and illustrated by deriving the fields of a dipole antenna.

Inspec keywords: antennas; Maxwell equations; electromagnetic wave propagation

Other keywords: power flux; Maxwell's equations; radiowave propagation; polarisation; electromagnetic wave propagation; current distribution; wave impedance; antenna gain; free-space path loss; plane-wave solutions; dipole antenna fields; electromagnetic theory; effective aperture; electromagnetic power flow

Subjects: Electromagnetic waves: theory; Electromagnetic wave propagation

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