In a wireless router, an antenna can achieve the purpose of enhancing wireless signals, which can be understood as an amplifier of wireless signals. Antennas have different radiating or receiving capabilities for different directions in space, and depending on the directivity, antennas have two types: omnidirectional and directional.
Omnidirectional antenna: On the horizontal plane, the antenna with no maximum direction of radiation and reception is called omnidirectional antenna. Since omnidirectional antennas are non-directional, they are mostly used in the central station of point-to-multipoint communication. For example, if you want to establish a wireless connection between two adjacent buildings, you can choose this type of antenna.
Directional antenna: The antenna with one or more directions with the greatest radiation and reception capabilities is called a directional antenna. The energy of the directional antenna is concentrated, and the gain is higher than that of the omnidirectional antenna. It is suitable for long-distance point-to-point communication. At the same time, due to its directivity, it has strong anti-interference ability. For example, in a residential area, when you need to establish a wireless connection across several buildings, you can choose this type of antenna.
