Eliminate misunderstanding: the more wireless route antennas, the better the signal? (1)

Eliminate misunderstanding: the more wireless route antennas, the better the signal? (1)

A strange consumption habit exists in the daily consumption behaviors of most consumers. when the price is almost the same, consumers prefer products with a "large quantity. In addition, the phenomenon of follow-up is also very serious. Many facts did not go to the research, and they took the plunge. "I will buy more products if I buy more products ". Fans of the "Car god party" and "heavy doors" are the most representative groups. Similarly, the majority of consumers who buy wireless routers fall into a misunderstanding that "the antenna has more wireless signals," and blindly follow suit, and even become "the only day line quantity party ", does the number of antennas affect wireless signals?

Why does a wireless router have multiple antennas?

Just as the aunts shop in supermarkets to buy food, the "no price increases" sign is the most attractive to them. "More", "big", and "cheap" have a profound impact on people's desire to buy food. The same is true for consumers of wireless routers. The "God logic" of "built-in antennas must be inferior to external antennas" has always had a decisive impact on consumers' Consumption Ideas. Some wireless router manufacturers have even changed the built-in antenna design to an external antenna design to win the favor of consumers. This is like a car manufacturer following Chinese consumers, adding an "ass" to the original beautiful hatchback and turning it into a sedan car ".

Are so many antennas really useful?

When we open the wireless router product page of the e-commerce website, we can find that the top 10 wireless router products in sales volume have more than half of the wireless routers with three or more antennas. This phenomenon shows that when consumers buy a wireless router, the multi-antenna (more than two) wireless router is very delicious to consumers. Multi-antenna has its advantages, but in actual application, if the number of antennas exceeds three, it is generally meaningless in residential scenarios.

Complex home environment, direct signal transmission is not allowed

Generally, the use environment in the home is complex. Both household appliances and walls block wireless signals, so that there is almost no direct signal from the transmitting end to the receiving end. Wireless signals transmitted from various items in the home form "multi-path transmission". Data transmitted from different routes to the receiving end may be delayed, as a result, we will intuitively feel that the network has changed to a "card.

MIMO technology "Saving the world"

As a result, the "MIMO" technology has emerged to save the world. The MIMO transmission technology requires the support of multiple antennas. routers can divide data into multiple copies from different antennas and integrate the data at the receiving end. Take 2x2MIMO as an example. Just like two people working at the same time, the original work efficiency is doubled, increasing the wireless speed and significantly improving the communication quality.

How does multi-antenna make sense? Be alert

The above MIMO technology for "saving the world" has already emerged. In this way, the more antennas, the better the wireless signal and transmission. In fact, it is MIMO's "Multi-Inbound and extra-large" that makes multiple antennas powerful. Both two antenna products and three antenna products are designed to match the X * x mimo mode. For example, the current mainstream M wireless router must be in the 2x2MIMO mode, that is, the two antennas are enough. If three or more antennas exist in the 2x2MIMO product, the manufacturer will mislead consumers. Although 2x3MIMO or 2xXMIMO is used, this type of mode has very poor performance and is very unstable.

MIMO Wireless Technology