What technologies do routers need to truly achieve dual-band?

The router's wireless connection rate needs to reach Gigabit. It needs to support the 802.11ac standard. One of the features of the 802.11ac standard is to support a higher 80/160MHz bandwidth, which means support for 2.4GHz and 5GHz dual bands, because early 802.11 n only supports two bandwidths of 20MHz and 40MHz.

Then start with the frequency. The so-called frequency is the period of change of things. GHz means that the radio wave will change 1 billion times per second. Back to the junior high school physics textbook: "The frequency is inversely proportional to the wavelength. The lower the frequency, the longer the wavelength; the higher the frequency, the shorter the wavelength.

This means that when the information is carried on a radio wave, the higher the frequency, the more data is carried in the same time, and the faster the network speed.

However, the problem is that the higher the frequency, the greater the signal attenuation.

A formula often used by communication engineers when doing network planning

The 2.4GHz attenuation is slow, the wall penetration performance is good, and the coverage is large; the 5GHz attenuation is fast, the wall penetration performance is poor, and the coverage is small.

In addition, the large coverage of 2.4GHz also means that the range of interference sources is large. You will find a large number of wireless networks working in the 2.4GHz band in the vicinity of the WiFi analyzer, which will cause mutual interference and affect the Internet experience.

Both have their own advantages and disadvantages. How to complement the advantages and disadvantages of these two to achieve the ultimate Gigabit Internet experience, which is the key to measuring the performance of a dual-band WiFi router.http://www.yeacommtech.com/


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