Whether the wireless coverage is related to the number of antennas

Now we have more and more mobile phones, tablets, laptops and other wireless devices, how to get a better WiFi experience has become our focus. However, in the face of large or complex house structure of the room, wireless signal often become unstable, WiFi coverage effect has become very unsatisfactory, "wireless corner" is more people do not want to see the situation. So, when we step into the computer city and start thinking about provisioning a new wireless router, have you ever met a salesman like this?

Salesman: "Big Brother, buy a cell phone or watch a computer?"

Answer: "... Buy a router. ”

Salesman: "What do you want?" or the latest model, with six antenna yo. ”

A: "Can you tell me how much the antenna is different?"

Salesman: "One is equal to one room one hall, two is equal to two bedroom one hall, three is equal to three room two hall, six puts the villa to have no problem." ”

For:......

Based on this understanding, I am afraid there will be a lot of small white users will be fooled to buy their own actual use of high-priced products. So, what exactly is the truth? As the salesman introduced it, does the wireless coverage have anything to do with the number of antennas? Let's find out the answer with a comparison of two of the top wireless routers that also carry 4 antennas: Asus RT-AC87U and a brand router at the same level to spread the signal coverage.

Signal contrast measurement of the same number of antenna routers

The test will be in the Zol 7-storey office area, through the Wirelessmon Professional version of software, to test the number of two antennas, gain the same router, in order to investigate their wireless signal coverage intensity and the ability to wear walls are different. Need to specifically note that in the Zol office area, covering more than 10 wireless hotspots, so the two wireless routers signal anti-jamming capability is also a big test.

So first take a look at the actual test environment diagram.

Map of measured environment

Note: Point A is the placement point of the router; b Point is the first test point, distance from a point 30m, and no barrier between a point; C Point for the second Test point, distance from a point of 16m, and a point between a common wall + wooden door barrier; d point for the third Test point, distance from a point 22m, and a point between the load-bearing wall + iron barrier, belong to the complex test.

Believe that through the two same antenna routers in B, C and D points of the signal coverage intensity test, we will certainly on the "wireless coverage is related to the number of antennas", resulting in an intuitive understanding and comparison.

Now immediately to two of the same level of 4-day router for signal coverage comparison, then are equipped with 4 antennas, and in the same test environment, the results of the test, according to the words of the former salesman, should be the same? is that really the case? Let's take a look at the test scores below.

2.4GHz Band test points measured results:

B Point actual test results:

ASUS RT-AC87U has a signal strength of 86% at point B

A brand router at point B signal strength of 80%

C-point actual test scores:

Asus RT-AC87U at C-point signal strength of 76%

A brand router at C-point signal strength of 72%

D Point actual test score:

ASUS RT-AC87U at D-point signal strength of 50%

A brand router has a signal strength of 40% at D Point