With three antennas, those 10 devices are sharing 1, mbps of available bandwidth at any given time. As you can see, this allows each device to have a much faster connection because there are multiple antennas that can transmit and receive data. As I mentioned before, antennas can both send and receive data. Only one of the antennas needs to receive a signal from a device in order for it to get the message.
This can be important if your router is located in a room with a lot of items that obstruct the wireless signal. With multiple antennas, you can be confident that your devices will have a strong internet connection when they are within the WiFi range of the router. When you have more than one antenna on your router, you can direct the wireless signal in a way that best fits your house.
Previously I described how antennas send out RF signals. You can use this to your advantage based upon the layout of your house.
If your house or office is all on one level, you will want your antennas to be aligned vertically. This will provide the strongest wireless signal in a horizontal direction. If you live in a building with multiple floors, you may want to consider pointing an antenna in the horizontal direction.
That way the radio signal will be strongest in the vertical direction. With several antennas at your disposal, you can align them in different directions to make sure all areas of your house have the best possible signal.
I live in a two story apartment, so this setup ensures that the wireless signal reaches both floors. One has two antennas and the other has three.
Well It takes two radio chains to reach signaling rates up to megabits per second, and with a third radio chain you can reach signaling rates up to megabits per second.
But you can't just count antennas to know how many radio chains they have, you have to confirm it by reading the technical specifications of the device. If the two or three antennas are all hooked up to a single radio, like in the case of a single-band With a single radio, it makes sense to have two antennas -- main and auxiliary -- for the sake of antenna diversity.
Sometimes the main antenna is in a better place to receive a given signal, and sometimes the aux receives the signal better. A third antenna in this case is just another aux, and it's probably not going to help much given that they're all within a few centimeters of each other. But then again, the antenna designer may have planned out the coverage patterns of those three antennas to complement each other well, so it's possible it can make a difference.
But you wouldn't really know unless you had an antenna engineer carefully test it. Overall, you really can't judge what a wireless router can do in terms of rate-vs-range just by counting antennas.
Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Once each antenna has received a signal, the router algorithmically combines the different versions to create one better version. Think of it this way. With three witnesses, you can combine all of their stories to get a fuller, more accurate understanding of what happened. One thing to note is that wireless clients, like wireless routers, also have transmit and receive antennas and the number of spatial streams utilized will always be limited by the device with the lowest number of supported signals.
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