The wireless AP's built-in antenna usually uses MIMO technology. MIMO is only available after the 802.11n protocol. Previously, 802.11a, b, and g did not. Nowadays, wireless AP products basically all support 802.11n protocols, which means that most of them use MIMO technology. For example, all of Fengrunda's various wireless products use MIMO technology to enhance the power transmission effect and reduce loss.
The more antennas there are, the better the signal of the wireless AP. However, the good meaning of the signal is not that the more the number of antennas is, the more powerful the wireless signal transmission capability of the wireless AP is, and the better the penetrating power is. In fact, the multi-antenna wireless AP signal is only about 10% to 15% stronger than the signal of the single-antenna wireless AP. The simple expression is that after the single antenna wireless AP is separated by a wall, its signal remains a single cell. The wireless signals of multi-antenna wireless APs are between single cells and two cells, and generally insensitive people hardly feel the difference.
For wireless APs, the decisive factor in the signal quality is its internal transmit power and whether effective MIMO technology is used. If these two items are very poor, then even if it is equipped with an ultra-high gain external antenna Its wireless signal coverage and signal quality will not meet the needs of users.
Now, not only does 802.11ac gradually move into the home, the 11ac standard can bring more possibilities to enterprise users. After deploying wireless APs with 11ac wireless technologies, 2.4GHz and 5GHz frequency bands will appear. Therefore, the antennas must not only provide multiple input and output services for the 2.4GHz band, but also work for MIMO in the 5GHz band. Such as Feng Runda's dual-band W168AP, 2.4GHz provides two high gain antennas, and 5.8G provides two 5dbi antennas. These antennas are designed to support more frequency bands and higher bandwidth, and are not intended to extend wireless signals.
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