1. Radiation by Electric Current Element 2. Directivity of Antennas 3. Radiation by Symmetrical Antennas 4. Radiation by Antenna Arrays 5. Radiation by Electric Current Loop 6. Principle of Duality 7. Principle of Image 8. Principle of Reciprocity 9. Huygens’ Principle 10. Radiations by Aperture Antennas
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