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WiFi Antennas

WiFi antennas are mainly used to enhance the wireless network signal. When the computer is far away from the wireless AP or other computers, or cannot communicate with the AP or other computers at all, at this time, the received or transmitted signal must be gained (amplified) by means of a wireless antenna.
The frequency band in which the antenna operates determines which wireless standard wireless device it is suitable for. For example, 802.11a standard wireless devices require antennas with a frequency range of 5GHz to match, so be sure to look for products corresponding to this parameter when purchasing an antenna.
According to the nature of work, it can be divided into transmitting antenna and receiving antenna.
According to the use, it can be divided into communication antennas, broadcast antennas, TV antennas, radar antennas, etc.
According to indoor and outdoor,
The indoor antenna has the advantages of convenience and flexibility, but the disadvantage is that the gain is small and the transmission distance is short;
There are many types of outdoor antennas, one is a pot-shaped directional antenna, and the other is a rod-shaped omnidirectional antenna. The advantage of outdoor antennas is that the transmission distance is long, which is more suitable for long-distance transmission.
According to the structure and working principle, it can be divided into line antenna and surface antenna, etc. The characteristic parameters of the antenna are pattern, directivity coefficient, gain, input impedance, radiation efficiency, polarization and bandwidth. When it comes to gain, this parameter represents the antenna power amplification factor. The larger the value, the higher the signal amplification factor. That is to say, the larger the gain value, the stronger the signal and the better the transmission quality.
When choosing an antenna, pay attention to whether the connector of the antenna matches the connector of the connected device. Generally, SMA and TNC for WIFI are mainly used on routers, but if the connectors on 2.4G wireless monitoring equipment match, it can also enhance the wireless signal. transmission effect. The antenna base is magnetic and can be attracted to the surface of metal objects, making the antenna receive stronger signals. Plug and play, without any additional conditions, but the gain and directionality of the antenna are also the key points to be considered.

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