What are dipole antennas?

Dipo antennas, also known as dipole antennas, doublets or wire antennas, are a type of simple radiofrequency antennas capable of receiving frequency. These are widely used in multiple technologies and as part of more complex antennas, because of their omnidirectional signal coverage. When the radio frequency flow flows into them, they produce either electromagnetic or radio signals. Like commonly known wire antennas, dipole antennas can be used in many places, from cars to TVs and AM-FM radio and wireless routers. The term dipole comes from the fact that these antennas are constructed from a flat rod or two bars of the same length, also known as the conductor. This is then attached to the radio line of its central point. This division creates two poles of antennas or dipoles.

Lenganténa should be half the wavelength. In other wordsé antennas. Other variants may include three or five wavelengths depending on the intended use of the device.

Although dipole antennas can be oriented vertically, horizontally or at an angle, the polarization of their electromagnetic fields changes with their positions. This can change how receptive to frequencies, depending on polarization and how they are in line with the position of the antenna. For example, in the modification of classic, rabbit antennas in the style of ears to improve the image on television, changes in the position of the antenna actually change how the antennas cope with the transmitting signal to increase the overall intake. The same happens when adjusting the length or position of the antenna of the car reception on the radio.

The

antenna frequency itself consists of two elements - rf current and rf voltage . The power of these elements is directly the opposite, depending on the position on the length of the antenna. May be useful to understand that amplItuda RF current is the strongest in the middle and the weakest at the ends. On the other hand, the RF tension is the weakest in the middle and the strongest on the poles.

It is possible to increase the function of dipole antennas combinations of the basic antenna with more sophisticated deflector or reflector components, which can improve profit and direction. This increases the overall signal, increases the receiving or transmission of the antenna and extends its range. This method is particularly useful in wireless signal broadcasting, as in wireless access points.