Un poco de teoría

PoE (Alimentación a través de Ethernet) es el nombre de varios métodos que permiten alimentar dispositivos de red mediante cables UTP/FTP. De esta forma, es posible alimentar dispositivos como cámaras, teléfonos, switches, puntos de acceso, etc.

In order to exchange data between at least two computers, a dedicated computer network must be created. In the created network, devices communicate with each other via transmission media, using appropriate communication protocols. Nowadays, we connect not only computers and servers, but also CCTV devices, alarms, smart home components and household appliances to the computer network.

The Yagi-Uda or Yagi antenna is one of the most popular antenna designs. Despite a comparatively simple construction, it has a high gain, typically greater than 10 dBi. Yagi-Uda antennas can operate in the HF to UHF bands (3 MHz to 3 GHz), but often within a limited bandwidth around the center frequency.