Coax Cable in 5G Technology

In the case of the same coverage area, the number of 5G coax cable is at least several times that of 4G base stations. Due to the high frequency of 5G signals, large attenuation, and poor ability to walk around, the construction of 5G base stations is not a small project.

This year is the first year of 5G. The three major flexible coaxial cable have begun to build 5G base stations, and mobile phone manufacturers are also stepping up production of 5G mobile phones. In particular, the construction of 5G base stations requires huge costs and energy, which can be described as a major project.

Let me talk about why the number of 5G base stations is several times that of 4G base stations under the same coverage area.

1. 5G wireless electromagnetic waves have high frequency, flexible coaxial cable, and poor diffraction ability

Like 4G, 5G also uses wireless electromagnetic waves to transmit signals. Due to the short wavelength of 5G, rf coaxial cable distance, large signal attenuation, weak penetration, and poor ability to go around, this will lead to, in practical applications, 5G macro base stations. The construction of China is more and more extensive than that of 4G.

In the 1980s, the 1G frequency was 800MHz, and the 5G frequency has now reached 4900MHz. According to a relevant person in charge of 5G, the signal range of a 5G base station can cover up to 1 square kilometer, while the current coverage of 4G base stations is about coax cable .The main circle is 3 square kilometers, and only less than half of the range of 4G base stations.

2. In order to save costs, 5G base station equipment is hung in a low position, which affects the coverage of 5G signals

According to a person in charge of a tower in Beijing, "5G signal coverage is small, and it is also related to cost reduction factors." For base stations, the higher the 5G base station is, the larger the signal coverage will be. However, according to the rf coaxial cable, most of the 5G base stations that have been built in Beijing are based on the original base stations.

On these signal towers, the installation sequence of the base stations is basically that the 3G base station antenna is installed on the top of the tower, the 4G base station antenna is installed in the middle, and the 5G base station flexible coaxial cable is installed at the bottom. The person in charge said that disassembling and reinstalling the original base station requires rewiring, which requires a certain cost, and there is a certain chance of damage.

In order to construct 5G macro base stations quickly and at low cost, operators generally install 5G base stations under the original base stations. "The result of this is that the 5G base station antenna is about ten meters shorter than other base station antennas, but you must not underestimate the height of more than ten meters. The coverage of the 5G base station may be due to more than ten meters and the signal coverage. It must be reduced by at least a hundred square meters.

3. The application of 5G is generally indoors, requiring more indoor small base stations

In the 2/3/4G era, the main task of coax cable is to solve the problem of outdoor signal coverage, and they only need to solve the problem of outdoor signal coverage. However, since 5G networks are mainly used in commerce and most of the applications are indoors, it is necessary to build a large number of small base stations to solve indoor signal problems.

These small base stations are small in size, low in power, and small in coverage. To meet indoor use, a very large number of flexible coaxial cable need to be built. This number can be said to be massive. There are so many individual users and commercial users across the country. The number of small base stations may exceed the original number of 4G base stations.

Summary: The arrival of the 5G era, whether it is for personal use or commercial use, is full of expectations. Because of its fast speed, it is favored by the coax cable. However, due to the shortcomings of 5G signal frequency, poor diffraction ability, and small signal coverage, More macro base stations have to be built to transmit signals. The transmission range of 4G base stations is about 3 square kilometers, while the 5G signal is only about 1 square kilometers. Therefore, if you want to achieve the same signal coverage as 4G, you must build 4G. Several times the number of base stations can achieve full signal coverage.