![]() The author used some of my figures to create a true „horror“ case of mobile radiation, where radiation in the kilowatt range would hit humans. In is general consensus in medical and biological research that the only impact of microwave radiation, as the one used in mobile networks, is by heating up the target object. The impact from the light bulb on your body will be more than a million times higher. Since hat home your distance to a light bulb will be 2-3 meters. The received power is 50 dBm – 82.5 dB = -32 dBm, which is less than one µW.Ī light bulb has about 60W energy consumption, and the emitted light and heat will be in that range. Path loss can be calculated to as =82.5dB. Height above ground is thus some 30 m, and we assume a position in 100 m distance from the antenna. (µW is the 1 millionth part of a Watt)Ī 5G macro cell antenna will be placed up on a tower or on the roof of a high building. ![]() Subtraction of path loss from transmission power gives 24dBm – 45dB = -21dBm, which corresponds to approximately 8 µW. We assume a distance of 10 m and get a path loss of 7.3+37.6=44.9dB. Let us quickly apply that to a user, standing in a relatively small distance to the transmitter:Ī Small Cell is comparable to a WLAN access point, and you can come pretty close. A typical 2G, 3G, or 4G antenna has got a transmission power of 20W (43 dBm). Let us try it out: Antenna transmission power is anywhere between 250mW (expressed as 24 dBm) for a Small Cell, and 120W for the largest 5G MIMO arrays (which is 50 dBm). The formula in very simple terms says: the radiation power goes down almost with 4 th power of distance. There are variants for different environments (city, rural) and frequencies, but they all show the same pattern. The Okumura-Hata formulas are internationally accepted and part of the mobile phone standards and acceptance rules. This is a formula due to the Japanese scientists Okumura and Hata, who have done endless series of measurements and have compiled them into empirical formulas. Where r is the distance from the source to the measurement point in meters. See the post from Mateusz Buczkowski in this blog for a general introduction of the concept of path loss.įor a frequency of 1 GHz (typical range for mobile phone networks) the path loss measured in Decibel units is The power of electromagnetic radiation goes down with distance extremely fast when moving away from the transmitter. My first statement here is: Major exposition of humans from mobile radio technology is from handheld phones, not from base stations! ![]() I’d like to deal with the reality of mobile network radiation in this post. It is about time to put things back into perspective. Each time a tower for a cellular network is built or planned to be built in a city or near a rural settlement, there is a new discussion about health issues of mobile phone or network radiation. Public opinion is first and foremost against the cell phone towers as they are the visible landmarks of the technology. This time it is quite a bit heavier than in the past, mainly due to the existence of social networks, which tend to spread alleged “bad news” and alarming stories literally at light speed. This is nothing new: this phenomenon is with us since the 1990s those alarming claims have been made around the launch of UMTS (3G) in the year 2000, and with the start of LTE in 2010, too. Announcements of a new mobile network technology generation (5G) have triggered a series of alarming claims about connected health threats.
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