Shulou(Shulou.com)06/02 Report--

Anyone who knows 5G knows that there are two main frequency bands in 5G network, one is sub-6GHz, the other is millimeter wave (Millimeter Waves). In fact, our current LTE networks are based on sub-6GHz, and millimeter wave technology is the key to the realization of the imaginative 5G era. However, some experts said at the 5G summit in Brooklyn this month that terahertz (Terahertz Waves) may make up for the shortcomings of millimeter waves and speed up the implementation of 6G/7G.

Anyone who knows 5G knows that there are two main frequency bands in 5G network, one is sub-6GHz, the other is millimeter wave (Millimeter Waves). In fact, our current LTE networks are based on sub-6GHz, and millimeter wave technology is the key to the realization of the imaginative 5G era.

Unfortunately, in the decades of the development of mobile communications, due to various reasons, millimeter wave has not really entered people's lives.

However, some experts said at the 5G summit in Brooklyn this month that terahertz (Terahertz Waves) may make up for the shortcomings of millimeter waves and speed up the implementation of 6G/7G.

Terahertz waves have unlimited potential.

From the 23rd to 26th of this month, the sixth Brooklyn 5G Summit was held as scheduled, covering 5G deployment, lessons learned, and 5G development prospects.

In addition, University of Dresden professor Gerhard Fettweis and NYU Wireless founder Ted Rappaport also talked about the potential of terahertz waves at the summit.

The two experts said:

Researchers have begun to study terahertz waves, and its frequency will be a key component of the next generation of wireless technology.

In his speech at the summit, Fettweis reviewed previous generations of mobile communications technologies and discussed the potential of terahertz waves to address 5G limitations. He pointed out:

We are about to enter the 5G era, which is of great significance to the application of technologies such as the Internet of things and AR/VR. Although 6G has a lot in common with previous generations of technology, it will also make up for many shortcomings.

So what is the origin of the terahertz wave that experts are so optimistic about?

Terahertz wave was proposed by the United States in 2004 and is listed as one of the "Top Ten Technologies to change the Future World". Its wavelength is between 3 μ m and 1000 μ m, and the frequency is between 300GHz and 3THz, which is higher than the highest frequency used by 5G, that is, millimeter wave 300GHz.

As can be seen from the picture above, the terahertz wave is between radio waves and optical waves, which to some extent gives it different characteristics from other electromagnetic waves. In other words, terahertz wave has the advantages of both microwave communication and optical communication, that is, high transmission rate, large capacity, strong directivity, high security and strong penetration.

Theoretically, in the field of communication, the higher the frequency, the greater the communication capacity. The frequency of terahertz wave is 1 to 4 orders of magnitude higher than that of microwaves currently used, and it can provide wireless transmission rates that microwaves cannot reach. Therefore, it can not only solve the problem that information transmission is limited by bandwidth, but also meet the needs of users for bandwidth.

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