Will the amount of 5G radiation become larger? The authority response came!
Release time:2019-08-28 03:08:50
The Ministry of Industry and Information Technology issued 5G commercial licenses to China Telecom, China Mobile, China Unicom and China Radio and Television.
One problem has once again received much attention. That is -- "The 5G era is coming, will the amount of radiation around me become bigger?"
Recently, Chinese Academy of Engineering academician He Hezhen responded to this question: "Many people will mistakenly believe that the base station has the risk of electromagnetic radiation. The radiation standard of 4G base station in the United States is 600 microwatts per square centimeter. The electromagnetic radiation standard of Chinese base station is only 40 microwatts. The United States is strictly 10 times."
The 5G network is faster than the 4G speed, not by enhancing the signal transmission power of the communication base station, but by expanding the transmission bandwidth. The 5G base station and the 4G base station are all less than 40 microwatts per square centimeter. Moreover, the denser the coverage of the base station, the better the reception of the mobile phone signal, and the smaller the electromagnetic radiation received by the user. Therefore, as more and more communication base stations, the signal is better and the radiation is smaller.
01
Myth 1: The more communication base stations, the greater the radiation?
A: The radiation amount of the communication base station is not as good as that of your home!
Focus on the key! The more the number of communication base stations, the better the mobile phone call effect, and the smaller the electromagnetic radiation generated between the mobile phone and the base station. In fact, the amount of radiation in the communication base station is not as large as that of a house appliance.
A "big block" communication base station does not mean a huge radiation value.
Radiation is actually a way of transmitting energy, and the earth itself is a large magnetic field. In nature, electric lightning strikes, sunspot activity, the atmosphere, the universe, etc. are generating electromagnetic radiation.
In life, radio stations, base station antennas, microwave ovens, computers, televisions, hair dryers, radios, etc., which are inseparable from people's lives, also generate electromagnetic radiation.
For example, in general, the radiation of the hair dryer can reach 100 microwatts per square centimeter, and the radiation amount of the induction cooker can reach 580 microwatts per square centimeter. The wireless router commonly used in the home also has the amount of radiation generated in the range of 1 meter. 60 microwatts per square centimeter or more.
The electromagnetic radiation of the communication base station is less than 40 microwatts/cm 2 according to national standards. In actual implementation, the operator considers the signal superposition and the construction should be controlled within 8 microwatts/cm2.
Compared with these common household appliances, the amount of radiation of the cell site is negligible.
Because the radiation coverage area of the communication base station antenna is wide, the radiation power is scattered over an area of several square kilometers, and the distance from the human body often exceeds 10 meters, which has less impact on the human body. Notebooks, mobile phones and other products are often in close contact with the human body, so the radiation value is even greater.
02
Myth 2: The better the cell phone signal, the bigger the electromagnetic radiation?
Answer: The cell phone signal is good, but the radiation to the human body is smaller!
The more the number of communication base stations, the better the mobile phone call effect, and the smaller the electromagnetic radiation generated by the mobile phone and the base station.
Because there is an intelligent control mechanism between the mobile phone and the base station, the call channel and electromagnetic radiation power between each other are dynamically adjusted.
A communication base station covering a radius of 500 to 700 meters, the farther from the base station than the mobile phone in the range, the stronger the peak transmission power of the corresponding call channel and the mobile phone.
In layman's terms, the better the communication base station coverage, the better the cell phone call signal. If the signal is good, the transmission power of the mobile phone and the base station is small, the corresponding power consumption is low, and the radiation to the human body is also small.
Experiments show that when the mobile phone has one signal left, the amount of radiation for one minute of the call is equivalent to the radiation amount of the base station for one year.
(Scared Xiaobian quickly looked at the phone signal grid...)
Therefore, if you often find that the signal strength of the portable mobile phone shows only one space, you should actively contact the operator and try to build a base station nearby, which not only improves the call connection rate, but also reduces the transmission power of the mobile phone, and the more secure the caller.
03
Misunderstanding 3: The closer to the communication base station, the greater the radiation?
Answer: The communication base station radiation belongs to "black under the lamp", and the distance is not necessarily large.
In recent years, the mobile phone signals of many newly built residential quarters are not good. One of the important reasons is that the old base stations have been removed, and the new base stations are difficult to land.
At present, most of the communication base stations in the city are preferred to be built in relatively spacious public areas such as parks, green spaces, squares, and streetlight poles, so that the distance from the residential community is relatively small, and the construction resistance is relatively small.
Many citizens believe that the closer to the communication base station, the greater the radiation, so they oppose the construction of communication base stations in their own communities or on the roof.
In fact, the electromagnetic waves of the communication base station are mainly emitted in the horizontal direction, and the attenuation in the vertical direction is obvious.
Therefore, the power density is often minimal below the base station. Just like the "oil lamp", the darker the light, the more outward the brightness.
In addition, the intensity of electromagnetic radiation is inversely proportional to the square of the distance. That is to say, the higher the transmitting base station, the smaller the impact on the human body.
04
Myth 4: 4G, 5G communication base station radiation is greater?
Answer: Network speed increase has nothing to do with base station radiation increment!
We all know that 4G networks are faster, but this speed increase is not based on enhancing the signal transmission power of the communication base station, but by expanding the transmission bandwidth, just like widening the highway.
In the 4G era, the frequency bandwidth has been greatly improved. Everyone feels that the network speed is faster, but the radiation standard of the 4G communication base station has not changed, or it is less than 40 microwatts/cm 2 , and the future 5G communication base station is the same.
Moreover, as explained above, the denser the coverage of the communication base station, the better the reception of the mobile phone signal, and the smaller the electromagnetic radiation received by the user.
Looked at these,
Is it more worrying?
One problem has once again received much attention. That is -- "The 5G era is coming, will the amount of radiation around me become bigger?"
Recently, Chinese Academy of Engineering academician He Hezhen responded to this question: "Many people will mistakenly believe that the base station has the risk of electromagnetic radiation. The radiation standard of 4G base station in the United States is 600 microwatts per square centimeter. The electromagnetic radiation standard of Chinese base station is only 40 microwatts. The United States is strictly 10 times."
The 5G network is faster than the 4G speed, not by enhancing the signal transmission power of the communication base station, but by expanding the transmission bandwidth. The 5G base station and the 4G base station are all less than 40 microwatts per square centimeter. Moreover, the denser the coverage of the base station, the better the reception of the mobile phone signal, and the smaller the electromagnetic radiation received by the user. Therefore, as more and more communication base stations, the signal is better and the radiation is smaller.
01
Myth 1: The more communication base stations, the greater the radiation?
A: The radiation amount of the communication base station is not as good as that of your home!
Focus on the key! The more the number of communication base stations, the better the mobile phone call effect, and the smaller the electromagnetic radiation generated between the mobile phone and the base station. In fact, the amount of radiation in the communication base station is not as large as that of a house appliance.
A "big block" communication base station does not mean a huge radiation value.
Radiation is actually a way of transmitting energy, and the earth itself is a large magnetic field. In nature, electric lightning strikes, sunspot activity, the atmosphere, the universe, etc. are generating electromagnetic radiation.
In life, radio stations, base station antennas, microwave ovens, computers, televisions, hair dryers, radios, etc., which are inseparable from people's lives, also generate electromagnetic radiation.
For example, in general, the radiation of the hair dryer can reach 100 microwatts per square centimeter, and the radiation amount of the induction cooker can reach 580 microwatts per square centimeter. The wireless router commonly used in the home also has the amount of radiation generated in the range of 1 meter. 60 microwatts per square centimeter or more.
The electromagnetic radiation of the communication base station is less than 40 microwatts/cm 2 according to national standards. In actual implementation, the operator considers the signal superposition and the construction should be controlled within 8 microwatts/cm2.
Compared with these common household appliances, the amount of radiation of the cell site is negligible.
Because the radiation coverage area of the communication base station antenna is wide, the radiation power is scattered over an area of several square kilometers, and the distance from the human body often exceeds 10 meters, which has less impact on the human body. Notebooks, mobile phones and other products are often in close contact with the human body, so the radiation value is even greater.
02
Myth 2: The better the cell phone signal, the bigger the electromagnetic radiation?
Answer: The cell phone signal is good, but the radiation to the human body is smaller!
The more the number of communication base stations, the better the mobile phone call effect, and the smaller the electromagnetic radiation generated by the mobile phone and the base station.
Because there is an intelligent control mechanism between the mobile phone and the base station, the call channel and electromagnetic radiation power between each other are dynamically adjusted.
A communication base station covering a radius of 500 to 700 meters, the farther from the base station than the mobile phone in the range, the stronger the peak transmission power of the corresponding call channel and the mobile phone.
In layman's terms, the better the communication base station coverage, the better the cell phone call signal. If the signal is good, the transmission power of the mobile phone and the base station is small, the corresponding power consumption is low, and the radiation to the human body is also small.
Experiments show that when the mobile phone has one signal left, the amount of radiation for one minute of the call is equivalent to the radiation amount of the base station for one year.
(Scared Xiaobian quickly looked at the phone signal grid...)
Therefore, if you often find that the signal strength of the portable mobile phone shows only one space, you should actively contact the operator and try to build a base station nearby, which not only improves the call connection rate, but also reduces the transmission power of the mobile phone, and the more secure the caller.
03
Misunderstanding 3: The closer to the communication base station, the greater the radiation?
Answer: The communication base station radiation belongs to "black under the lamp", and the distance is not necessarily large.
In recent years, the mobile phone signals of many newly built residential quarters are not good. One of the important reasons is that the old base stations have been removed, and the new base stations are difficult to land.
At present, most of the communication base stations in the city are preferred to be built in relatively spacious public areas such as parks, green spaces, squares, and streetlight poles, so that the distance from the residential community is relatively small, and the construction resistance is relatively small.
Many citizens believe that the closer to the communication base station, the greater the radiation, so they oppose the construction of communication base stations in their own communities or on the roof.
In fact, the electromagnetic waves of the communication base station are mainly emitted in the horizontal direction, and the attenuation in the vertical direction is obvious.
Therefore, the power density is often minimal below the base station. Just like the "oil lamp", the darker the light, the more outward the brightness.
In addition, the intensity of electromagnetic radiation is inversely proportional to the square of the distance. That is to say, the higher the transmitting base station, the smaller the impact on the human body.
04
Myth 4: 4G, 5G communication base station radiation is greater?
Answer: Network speed increase has nothing to do with base station radiation increment!
We all know that 4G networks are faster, but this speed increase is not based on enhancing the signal transmission power of the communication base station, but by expanding the transmission bandwidth, just like widening the highway.
In the 4G era, the frequency bandwidth has been greatly improved. Everyone feels that the network speed is faster, but the radiation standard of the 4G communication base station has not changed, or it is less than 40 microwatts/cm 2 , and the future 5G communication base station is the same.
Moreover, as explained above, the denser the coverage of the communication base station, the better the reception of the mobile phone signal, and the smaller the electromagnetic radiation received by the user.
Looked at these,
Is it more worrying?