With the continuous iteration of WiFi technology, high-speed wireless networks have become another basic demand for people in addition to water and electricity at home. This also has led to a series of problems around the purchase of home routers, of which "strong signal" is the most concerned problem for most consumers. Many merchants have seized this psychology of consumers, and used words such as "super power" and "king through the wall" to attract users to buy, but in fact, such words are suspected of misleading consumers, because the WiFi signal can not pass through the wall at all.
There may be friends to say, since the signal strength and power of the router are related, then the direct high-power network is not the end of the matter. Unfortunately, this is not feasible in our country ~ our country stipulates that the maximum transmission power of wireless routers on the market cannot exceed 100mW, that is, 0.1W, which is also for the sake of the user's health.
From this point of view, the so-called "high power" advertised by the merchant is actually self-defeating, after all, the maximum power limit is there, and everyone's level is actually similar.
Since this road is not feasible, how can we effectively enhance the WiFi signal, before clarifying this problem, let's first review the characteristics of the WiFi signal in the transmission.
The antennas used in the routers in our home are omnidirectional antennas, and the signal is uniformly radiated at 360 ° in the horizontal direction, if the router is regarded as a whole, then the signal is probably radiated in this way.
The advantage of this is that the WiFi signal can be evenly covered in all directions, but correspondingly, its signal strength is not as good as that of the directional antenna. However, considering the home scene, this design is also very reasonable. In actual propagation, WiFi signals (essentially electromagnetic waves) are reflected, refracted, diffracted, diffusely reflected, and penetrated after encountering different obstacles. Among them, the impact of refraction is the smallest, can be ignored, the impact of penetration is the largest, especially the cement wall and brick wall in the home, which can directly attenuate the WiFi signal strength of the 2.4G band to one thousandth, not to mention the 5G band with poorer penetration, one more wooden door, one more corner, will make its signal strength drop significantly.
This is also why I told you at the beginning that "WiFi signals cannot pass through the wall at all", after all, the signal attenuated to one in a thousand is no different from disconnecting the network. Therefore, the transmission of WiFi signals in the home mainly depends on reflection, diffraction, diffuse reflection, etc., after all, our room can not use solid iron doors or stone doors, so the router placed in the living room can always find some gaps to transmit the signal to the bedroom.
Some users like to put the router and the optical cat together in the weak current box for aesthetic purposes, which is a very wrong behavior. You know, the impact of metal obstacles on WiFi signals is very huge, and it can easily reduce the signal strength to one in ten thousand, which is why even if it has reached 2022, mobile phones will still have no signal in the elevator. So don't underestimate the thin tin door of the weak current box, it is simply a nightmare for WiFi signals.
Therefore, when buying a router, don't believe in what "through the wall king", "through the wall treasure" and other words, more or pay attention to the configuration, performance and interface of the router itself, do not covet cheap, a penny for a penny.
For users who do not plan to upgrade their routers for the time being, I recommend enhancing the WiFi signal by starting from the position and angle of placement. First of all, choose an open place, try to keep the surrounding objects as high as possible, and avoid obstruction, so that the WiFi signal radiates as far as possible to the surrounding area. Pay attention to avoid microwave ovens, Bluetooth speakers, wireless keyboards and mice and other devices to avoid interference.
Then there are the antennas of the router, although for the router with external antennas, the antennas can be rotated and adjusted, but in fact, due to the signal direction mentioned above, these antennas are still vertical when the signal is the best.
As shown in the image above, pointing the router antenna at you doesn't bring a signal boost, but instead makes you cover the weakest part of its signal. Therefore, our router only needs to be as the manufacturer's packaging draws, and it is the best state to stand each antenna upright.
For friends who have a budget to upgrade the router, under the current technology, a single router can not do the whole house signal coverage without dead ends, especially the more complex rooms and large apartments of more than 100 square meters, each wall, each corner will cause a significant attenuation of the signal, so if you want to enhance the signal in some rooms far away from the router location, buying multiple routers that support Mesh technology for networking is undoubtedly the most effective solution. It should be noted that at present, the mesh technology of each brand can only be matched with other products to play the best effect, and different brands are not interoperable.
Well, this time about wiFi small knowledge and tips will be introduced here, if you have other questions, welcome to leave a message in the comment area ~
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