With regard to routing antennas, the manufacturers will not tell you about those things




The sofa network once reported the wireless signal enhancement series, tells a kind of router to want the wireless signal to become stronger, what factors should be limited. Among them, the first lecture mentioned that it mainly depends on two factors: wireless chip and antenna.

This is our main chat line. This little thing is an indispensable part of wireless signals. Without it, the route can only be used in a single room. It is also an important element of appearance. The appearance of the router is not square or oval, but manufacturers can use antenna to decorate the differences. The R8000 of the NETGEAR is a six-antenna spider-shaped monster. Xiaomi Dalu is a small elliptical column with an external antenna on the wooden surface. The two images are almost indistinguishable from each other.

Antennas are also an important promotional element for manufacturers. For example, if the external antenna signal is better, the more the number is, the stronger the signal is, and the omnidirectional signal is more comprehensive. These words look correct and solidify in everyone's impression. However, there are actually hidden ideas. In many cases, it may also be wrong. Manufacturers will only lead in the direction that is beneficial to them.

This article, we hope to make clear about the winding of the antenna.

Built-in vs add-in

If there is no concept of routing, the antenna built-in or external Ta may not be concerned, after all, the mini-type routing is also quite a lot. Instead, some children's shoes that know and will take the initiative to buy routes, they will think that the route antenna, the external is better than built-in, because the built-in can not see it.

Everyone's cognition is mostly derived from vendor propaganda. Manufacturers say this because the external is easier than built-in. The implementation of the external antenna has been implemented for many years and has a large space. It has been very mature. The built-in antenna is not so long compared to the development time. It needs to take into account the compromise between space and antenna performance. It is a difficult task for hardware engineers. The realization.

But this does not mean that the external signal is better than the built-in signal. Engineers of at least four routing vendors once said to Lei Fengnet that a well-designed built-in antenna route would not be inferior to an external antenna route. Of course, there is also a situation where the external has advantages. It can replace the antenna with stronger gain, but the player who will replace the antenna should have less and less.

1 root vs multiple roots

The number of antennas is the focus of manufacturers' marketing. In the computer city, you can often see that two antennas are ordinary routes, three are through walls, and four are villa-type routes. But in fact there is one parameter that the manufacturer still does not say — MIMO.

If it is an ordinary route, then 1 antenna is a normal design, and two antennas are specially designed. Under normal circumstances, regardless of the built-in external, 1 antenna can take care of the entire room, two no need.

If two are needed, it must be routed to support MIMO, that is, to support multiple signal in and out, and each antenna has one signal. This can greatly increase the speed. The coverage of the signal is also helpful, but it requires the manufacturer to have better algorithm capabilities, because more than the antenna, you need to determine which root access the terminal should be routed from (if the terminal also supports MIMO, you can connect both signals, speed It will be faster, but this speed can only be used on the LAN, the speed is not so fast.

Omnidirectional vs directional

Omnidirectionality and orientation are also interesting topics. A few years ago, we discussed that these two words were mainly on manual antennas. By installing extra-large directional antennas on computers, we could “pick up” to networks farther away. The author's previous friend who lived next to the school did just that.

Currently on the market routers, basically the antennas are omnidirectional. At present, I have not seen the route of directional antennas to sell. Big manufacturers do not say this word. Instead, some new route players have to advertise their own characteristics before they turn it out. Do not pay too much attention.

other

There are also some smaller propaganda words, such as the use of copper or iron for antenna materials, which were more controversial in January when the 360 ​​pk millet. This belongs to the category of signal design considerations for a route. What kind of material, what parameters, and how to adjust it will only be ready.

In the end, we still look at the signal quality.

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