![]() The antenna is also isolated from the ground plane that is the metal box that works as the chassis. The broadside of the antenna typically emits most of the energy which results in a donut-like radiation pattern. ![]() This is because the dipole antenna has two arms that have balanced currents, which means there is little current flow on the chassis or ground plane. The ground plane or size of the box will typically not determine the radiation pattern of the dipole antenna. ![]() Properties of Dipole AntennasÄipole antennas provide reliable polarization, omnidirectional radiation patterns, and consistent performance. The most common frequency for dipole antennas is 2.4GHz frequency band which is the band not only of WiFi and Bluetooth, but also is the Industrial, Scientific, and Medical (ISM) frequency band. The impedance and frequency of the conductors are typically determined by the length of the conductors. They get their name from the bilateral arrangement of two conductive elements on a common axis separated by an insulator. Dipole antennas are the most popular and simplest RF antennas.
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