Effect of ground planes: monopole antennas. | 20/62 | UPV

Título: Effect of ground planes: monopole antennas.


Descripción automática: In this video, the presenter discusses the concepts surrounding the feeding of a Yagi antenna and the general principles of antenna theory. The focus is to avoid a balanced feeding structure to achieve a more direct and unbalanced feeding structure for the antenna. A review of the max theory is provided, explaining the effects of currents, charges, and ground planes in antenna function. The concept of charge distribution across a ground plane is also explored.

The presenter then delves into the relationship between current distributions and their corresponding images in front of a perfect electric conductor, which is relevant for monopole antennas. The monopole antenna itself is introduced as essentially a half dipole antenna placed above a ground plane, which affects various parameters such as voltage, current, and impedance.

The video further explains the advantages of a monopole antenna over a dipole antenna, including a reduced voltage requirement and impedance, as well as double the directivity. The radiation resistance and radiation patterns of monopole antennas in comparison to dipole antennas are also covered. Lastly, the lecturer touches upon the practical aspect of feeding monopole antennas using a coaxial connector and highlights the efficiency of such setups in comparison to other systems.

The lecture concludes with an invitation to the audience to further their understanding by referring to recommended literature on the topic.

Autor/a: Segovia Vargas Daniel

Curso: Este vídeo es el 20/62 del curso European School of Antennas.    • European School of Antennas | Univers...  


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