This page covers the radiation emitted by Hertzian dipoles, including the derivation of electromagnetic fields using Maxwell’s equations and the Biot-Savart law. It emphasizes the behavior of far-fiel...This page covers the radiation emitted by Hertzian dipoles, including the derivation of electromagnetic fields using Maxwell’s equations and the Biot-Savart law. It emphasizes the behavior of far-field and near-field radiation, detailing the donut-shaped radiation pattern and the conversion of electromagnetic waves to circuit voltages by antennas. The analysis includes θ-polarized plane waves, focusing on intensity and total power radiated, with dependencies on antenna efficiency and wavelength.