The antenna and telecommunications experts in the Electrical and Electronic Engineers Association (IEEE) have an acknowledgment of people of 5G RF radiation.
On September 21, the National National Helps demonstrations in front of the Swiss Capitol, this activity is not lonely, in fact, protesting 5G technology and deployment of 5G antennas of the demonstration event has swept the Swiss nationwide.
Citizens including many cities, including Aspen, Switzerland Bern, California, San Diego and the United Kingdom of Totters, have been protesting with 5G wireless base stations. They are worried that 5G network nodes may be harmful to humans, animals and plants. Influence. They pointed out that installation antennas in place near human living locations may lead to potential hazards in RF radiation.
The protesters pointed out that there is no sufficient scientific evidence that the 5G signal is safe, especially signals transmitted within the millimeter wave electromagnetic spectrum band. Today's mobile device is less than 6 GHz, while 5G will use a frequency of 6 gHz, including millimeter wave bands between 30GHz to 300 GHz.
Many people are worried about 5G, so that there are some cities to cancel or postpone the installation deployment of 5G base stations.
IEEE future network planned members shoulder the fiveG development and deployment of the pavement of the road, they noticed these negative news reports. In September, the team issued a short papers entitled "5G communication system and its radio frequency radiation limit", which reviews existing RF radiation guidelines.
It has been consulted to the two members of the IEEE Association for their views on the public to 5G RF radiation. The IEEE Association member Rod Waterhouse is a member of the 5G program "Science and Technology Focus" publication, and he participated in the editorial work of the above report. His research direction includes antennas, electromagnetic and microwave photomic works, and he is also the Chief Technology Officer and Joint Founder of Octane Wireless, Hannover, Maryland.
Another interviewer is an IEEE senior member David Witkowski, who is a joint chairman of 5G plan deployment work group. He is an expert in wireless and telecommunications industries, and is an executive director of a non-profit joint venture Silicon Valley, a non-profit joint venture company in Silicon Valley, which is committed to solving communication, education and transportation.
5G science
Waterhouse said that people's 3G and 4G honeycomb network base stations around the world will be open, but the negative impact of 5G may have a healthy impact, mainly due to the architecture of the 5G base station launch tower and 3 / 4G base station. The launch of the 3 / 4G base station is a few kilometers away from each other and placed in a towering building, which is generally away from the dense population. However, 5G base stations are small (small than backpacks), can be placed almost anywhere, such as electric poles, street lights, roofs, which means 5G base station may be in residential, apartments, schools, shops, parks and farms .
Waterhouse continues to explain: "Communication Operation Chamber will integrate these small base stations to the bench, bus stops, etc., so they will be very close to the ground, so that they are closer. Since their coverage is limited, More densely deployed, and the 5G base station will be more than the number of 3 / 4G honeycomb tower around us. For millimeter networks, the 5G honeycomb antenna needs to be placed every 100 meters to 200m. "
Anything will be favorable, these small 5G base stations have a benefit that due to small coverage, their transmission power is lower than the power of today's honeycomb tower.
"If the transmit power of the 5G base station installed on the bus stop and the launch of the mobile phone launch tower currently installed at a 30-meter high position, the concern is not reasonable." Waterhouse said, "But obviously, The true situation is not the case. "
According to Witkowski, 5G replace 4G is used on the 750 MHz band. If there is no change in the antenna, then their coverage is the same, but 5G will provide higher data transfer rates and faster network response times.
According to Witkowski, 5G will be divided into two phases. In the first stage, the 5G device will work within the spectral range of the 4G device operating frequency band (6 GHz or less). He said: "Every 5G user will have more bandwidth and faster data transmission rates. In addition, the 5G base station will not be everywhere, but only deployed in a wide range of area."
In the second phase (he called 5g plus), the bandwidth and data rate will be greatly improved, as there will be more base stations, and they will use the frequency band of millimeter waves.
Witkowski said that US operators have densely deployed in 6GHz below, they will start the deployment of 5G base stations at the K / KA band and millimeter wave band. In addition, some of the current 3G and 4G bands are also replaced with 5G.
"For American operators that can eaten or redistribute frequencies, such as T-Mobile has 600 MHz bands, Sprint has 2.5 GHz band, their deployment strategy will be temporarily regardless of 3G / 4G network, first there is rich These frequency bands add 5G networks. "
Current regulations
Waterhouse pointed out that there are two documents in the international community in the international community. One of the international non-ionized radiation protection committees (ICNIRP) is the introduction in 1998. The second is IEEE C95.1, developed by the IEEE International Electromagnetic Safety Committee. And published in 2005, it is a "IEEE on the human body exposure to electricity, magnetic and electromagnetic fields". IEEEC95.1 covers all spectrums between 3 kHz to 300 GHz, of course, also contains current 5G spectrum. Future network reports detail the various radiation limits listed in these files.
Icnirp and IEEE guidelines will be revised regularly this year, and the local radiation limit of 6 GHz or more is also set lower. In addition to these two international standards, Belgium, India, Russia and other countries have established more stringent restrictions.
Regarding whether the millimeter wave section is safe, Waterhouse explained that since the radio frequency from the honeycomb site is in the range of non-ionizing radiation spectroscopy, such radiation does not damage the human DNA and cause cancer. At present, the only known biological impact of RF to the human body is to heat the human tissue. Excessive exposure to radio frequency radiation can cause overall heat to the risk level. Local radiation will also damage the skin tissue or cornea.
"In fact, the higher the frequency, the actual impact of the human body and the smaller depth of radio frequency penetrate into the human body. So, a benefit of millimeter waves is that it will not even harm your skin because it will be surface from the skin Reflection is back. "
Waterhouse acknowledges that although millimeter waves have been used in many different applications, such as astronomy and military applications, their use effects in telecommunications are unclear. Waterhouse said that regulators must ensure that 5G is safe. He said that people generally believe that millimeter waves are safe, but they should still be supervised.
"Most people in the scientific community don't think there is a problem with 5G radio frequency radiation," Waterhouse said. "But if you don't need to worry, there is also a scientific basis."
Many opponents have insisted that 5G must be secure before the regulator allows deployment. According to Waterhouse, this advocation is too extreme, because it is logically, it is not possible to prove anything 100% to prove anything. Everything has exceptions.
He said: "Let's take a shower, do breakfast, go to work, eat in the restaurant, play in public places, all of which we do may bring risks. Do you want to say" There is no wind cloud "? The problem is that whether it is 3G, 4G or 5G, whether the electromagnetic radiation safety risks can be controlled? Regarding whether electromagnetic radiation safety will affect human health, people have been studied by approximately 60 years ago. Since then Since the beginning, thousands of research reports have concluded electromagnetic radiation without health risks. Few some research claims that some evidence can prove the risk of electromagnetic radiation, but these studies have never been reproduced, Repeatability is precisely a key factor in true science. "
Therefore, we should continue to study the effects of electromagnetic radiation on health, but most evidence suggest that there is no reason to suspend 5G deployment.
Be
Copyright Notice: Circuit City original compilation, translated from IEEE, please indicate the source!
Our other product:
