5G Base Station Radiation Is Large? Don’t Worry(1)
The discussion that the radiation of 5G base stations far exceeds that of 4G base stations and even harms health has attracted widespread attention. There are reports that Belgium has banned the construction of 5G base stations because of radiation problems. How big is the 5G base station radiation? Will it harm human health? How does China's 5G base station radiation compare with foreign countries? Let's find out together.
1. How big is the radiation of 5G base stations? How much bigger than a 4G base station?
In order to prevent electromagnetic radiation pollution and protect public health, the national environmental protection, health and other departments have successively formulated regulations and national standards such as "Electromagnetic Environmental Control Limits", and stipulated grading standards for electromagnetic radiation. Comparing the communication electromagnetic radiation standards of various countries and regions, the United States and Japan are both 600 microwatts/square centimeter, the European Union is 450 microwatts/square centimeters, and the Chinese standard electromagnetic radiation limit is 40 microwatts/square centimeters.
In addition, from the perspective of radio technology, the typical value of the radio transmission power spectral density of 5G macro base stations is about 2 watts/MHz. Typical values for 4G macro base stations are around 4 watts/MHz. Typical values for 3G macro base stations are around 10 watts/MHz. It can be seen that compared with 3G/4G base stations, the transmit power spectral density of 5G base stations is basically the same or even lower. In addition, the radio frequency band used by the 5G network is higher and the attenuation is faster, so at the same distance from the base station, the radiation value of the 5G base station is not necessarily higher than that of the 4G base station.
2. Many experts point out that mobile phones emit more radiation than base stations because they are closer to the human body. So, how much damage will the radiation of 5G mobile phones cause to the human body?
The influence of electromagnetic radiation of mobile phone on people mainly includes two aspects, one is thermal effect, and the other is biological effect.
Among them, the thermal effect is a local, short-term temperature change caused by the tissue fluid in the human body absorbing the energy radiated by radio waves due to the close proximity of the mobile phone to the person's head or torso when a person uses a mobile phone to make a call. This is also the reason why we sometimes feel the local heating of the head when we use the mobile phone for a long time to talk. However, this thermal effect will soon disappear through the body's own adjustment after the end of the mobile phone call.
The International Health Organization has formulated standards many years ago to regulate the thermal effect of mobile phone radiation, and China has also issued standards consistent with international standards to regulate the radiation of mobile phones to people. At present, 4G mobile phones and 5G mobile phones follow the same standards and the same limits. Mobile phone radiation mainly depends on two parameters, one is the transmit power of the mobile phone, and the other is the distance between the mobile phone and the human body. The radio transmission power of 5G mobile phones is basically the same as that of 4G mobile phones, so in terms of the thermal effect of mobile phone radiation on people, there is no difference between 5G mobile phones and 4G mobile phones.
As for whether the long-term use of mobile phones will have harmful biological effects on the human body, after more than ten years of follow-up research, there is no unified conclusion by relevant international research institutions. Of course, developing a good habit of using mobile phones, avoiding holding your head close to your head for a long time to make or answering mobile phone calls, using wired headsets to talk as much as possible, keeping the distance between the mobile phone and the human body or using a landline phone, etc., can effectively reduce the number of electromagnetic radiations of mobile phones. to humans.
