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Antennas: Openings and Radiation
This lecture covers the theory of antennas with openings, focusing on the radiation produced by magnetic sources near conductive planes. The concept of equivalent problems is introduced, where physical objects are replaced by simpler mathematical representations. The application of image theory to metallic planes with openings is discussed, along with the conditions for tangential electric fields and magnetic current distributions. The lecture also explores the radiation from thin slits, the magnetic equivalent of wire antennas, and the radiation patterns related to different antenna configurations.