Why Do Wifi Routers Have Multiple Antennas? – In Depth Explanation

Have you ever wondered why do wifi routers have multiple antennas? Instead of the 1 or 2 antennas seen on earlier routers, most new Wi-Fi routers, such as the Netgear Nighthawk and the TP-Link Wi-Fi router, now include 3-6 antennas. If you think about it, you could wonder what the point of expanding the number of antennas is. Isn’t it true that having many antennas causes signal interference?

Wi-Fi routers are equipped with many antennas, which aid in the improvement of the speed and reliability of data transfer. When a router has many antennas, it may deliver various streams of data at the same time MIMO (multiple Input/Multiple Output), which increases the speed of the network. Additionally, they make it possible to utilize the beamforming technique more successfully, which aids in focusing signals on the target device to be used.

A router configured with a single receive antenna and a single send antenna is referred to as having a 1-1 SISO (Single Input/Single Output) configuration, which means that it can only broadcast and receive over a single radio channel at the same time. The other type of arrangement is referred to as 3 3 MIMO (Multiple Input/Multiple Output), which means that a router with three transmit and three receive antennas is capable of sending and receiving data over three radio channels. The data transfer rate (throughput) is increased by thrice as a result of this. There are several more antenna combinations available, including 2 2 MIMO, 4 4 MIMO, and 6 6 MIMO.

Nonetheless, it’s crucial to remember that, in order to take full use of the increased transfer rate provided by MIMO routers, your receiving devices must be capable of supporting multiple streams of data transmitted across multiple antennas. While it is feasible for a Wi-Fi router to have six or eight antennas, it is only possible for it to provide three data streams. Typically, the remainder of the antennas are utilized for beamforming and antenna diversity purposes.

Are Routers With External Antennas Better Than Those With Internal Antennas?

The performance of wireless routers with outer antennas is not always superior to that of routers with inside antennas; nonetheless, they provide better directional control. This implies that, if the external antennas are properly positioned, they will be able to deliver a stronger signal in the direction of the intended recipient. Routers with inbuilt antennas, on the other hand, are better at spreading signals more uniformly than those without.

What Is The Best Way To Position The Antennas Of A Wi-Fi Router For Optimal Coverage?

A Wi-Fi router antenna that is positioned vertically emits a signal that is typically delivered horizontally, whereas an antenna that is positioned horizontally emits a signal that is typically sent vertically. You must tilt the antennas of your Wi-Fi router in opposite directions in order to provide the best coverage possible. In this manner, the Wi-Fi signal generated by your router will be able to travel in both vertical and horizontal directions.

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For the optimum coverage in a single-story house, set the inner antenna(s) vertically at 90 degrees and the outermost antennae at around 15-30 degrees distant from the center of the router. It is necessary to put some antennas horizontally and others vertically if you want the router’s signal to go both upstairs and downstairs. If you want the signal to travel upstairs and downstairs, you must position some antennas horizontally and others vertically. This will allow the Wi-Fi signal to go in both directions, hence increasing coverage.

Also, bear in mind that everyone’s router placement, home setting, and router model are unique to their situation. As a result, the only way to know for certain what will work for you is to experiment with different antenna configurations while keeping a watch on the Wi-Fi reception of each device.

When it comes to routers, what’s the difference between one with one, two with two, and three with three antennas?

The difference between a router with one, two, or three antennas is the number of radio channels in which each antenna is capable of broadcasting and receiving information in each configuration. A router with a single antenna receives and transmits data over a single radio channel, a router with two antennae receives and transmits data over two radio channels, and a router with three antennas receives and transmits data over three radio channels.

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This implies that, while the number of antennas on a router has no effect on Wi-Fi speed, the number of antennas on a router does have an effect on speed. Theoretically, a router with three antennas delivers and receives data via three spatial streams, making it three times quicker than a router with a single antenna in terms of transmission and reception speed.

What is the best way to position the four antennas on a router to get the best coverage?

If you have a router with four antennas, you should position the two central antennas vertically at 90 degrees and the outside left and right antennas at 45-60 degrees against the horizontal plane in order to have the best coverage. Additionally, be certain that the router itself is positioned in a central location in your house or workplace.

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Modern 802.11n and 802.11ac Wi-Fi routers have more than one antenna, as opposed to older 802.11b/g routers, which makes the implementation of MIMO (Multiple Input/Multiple Output) technology, which helps improve speed and reliability, more effective. Modern 802.11n and 802.11ac Wi-Fi routers have more than one antenna, as opposed to older 802.11b/g routers.

In addition to allowing for the use of MIMO technology, having a large number of antennas allows for the application of methods such as beamforming and antenna diversity, therefore improving dependability and providing a much-improved end-user experience.

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author techswifty
John Stewart

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