How to cope with the impact of 5G base station ？
What is 5G base station
The 5G base station is the core device of the 5G network that provides wireless coverage to achieve wireless signal transmission between the wired communication network and the wireless terminal. The architecture and form of the base station directly affect the deployment of 5G networks. In technical standards, the frequency band of 5G is much higher than 2G, 3G, and 4G networks. The current stage of 5G networks mainly work in the 3000-5000MHz frequency band. Because the higher the frequency, the greater the attenuation during the signal communication process, the base station density of the 5G network will be higher.
On April 30, 2020, the world’s highest altitude 5G base station was officially put into use, and the 5G signal “reached the top” top of the world for the first time.
As of the end of 2021, China has built and opened 1.425 million 5G base stations to build the world’s largest 5G network, and the total number of 5G base stations accounted for more than 60%of the world.
What is the impact of 5G base station on satellite receiving
Due to the large -scale completion of 5G base stations, it has a huge impact on satellite receiving. China Mobile obtains two sections of 5G spectrum, 2515MHz ～ 2675MHz, 4800MHz ~ 4900MHz, China Telecom’s 5G frequency is 3400MHz to 3500MHz, and the frequency of 5G of China Unicom is 3500MHz to 3600MHz. From the perspective of the 5G frequency of the above allocation, the 5G spectrum of China Telecom and China Unicom to the downlink frequency of Satellite Expansion C -band 3400MHz ～ 3600MHz will form the same frequency interference. interference.Taking the China Unicom 5G base station with a frequency of 3500MHz to 3600MHz as an example, the system bandwidth is 100MHz, and the information: the launch system is the base station of the AAU device, the maximum useless radiation power spectrum density of 3600MHz ～ 3700MHz band-26dbm/MHz, in 3700MHz to 4200MHz band band band band band The maximum useless radiation power spectrum density is -47DBM/MHz, the maximum gain 25dB of the MIMO5G antenna matrix, and the maximum output power of the 5G base station linear area is 53dBMW, that is, the EIRP theory can reach 78dBMW/100MHz. It can be seen that the strength of the 5G signal is far greater than the strength of the satellite downward signal. The ground receiving system needs to take other response measures to resist the interference of 5G signals.
How to sove?
In order to cope with the impact of 5G base stations on satellite receiving, Anhui Bowei Electronic Technology Co., Ltd. has become the first manufacturer of domestic development and production of anti -5G interference equipment. Product services. The company has been a radio and television industry for more than 28 years, and many top domestic microwave communication experts have been developed. At the same time, there are cases of design and construction, installation of a number of radio and television units, machine rooms, transmission, and terminal cases, familiar with the working principle and fault treatment solution of the radio and television system, and have a lot of rich practical experience in the satellite receiving system. It can provide a complete solution for anti -5G satellite interference.
The following 6 characteristics of anti -5G products in the research and production of Anhui Povy Electronic Technology have the following 6 characteristics:
- Small size, light weight, simple and convenient installation. (Reduce satellite antenna feed source support rod negative to ensure the stability of the original antenna)
- Waterproof, lightning protection design, and product use cycle long.
- HD digital signal transmission, low loss, low noise, high -gain output.
- Perfect solution In the feed antenna, due to the length of the high -frequency head and the filter, the insufficient space needs to be installed with the need to be installed, reducing the system insertion loss and improving the receiving accuracy.
- Combined with the C -band filter in the GL series, the use of single/dual -polarized feeders is the best.
- At present, in the country’s market, it is the first to be special for 5G anti -interference R & D and production. It has the advantages of good indicators, affordable prices, and reducing the cost of anti -interference.
The 5G system has officially started operations. With the increase of users, the transmitting power of 5G base stations will increase to varying degrees. In the future, the problem of 5G signals in the C -band will be disturbed by 5G. Based on the specific situation, the satellite Earth Station must systematically evaluate the transformation facility to minimize the interference that the 5G signal may bring to the minimum, ensuring that satellite radio and television signals are safe and smooth.