4G Cell Phone Jammer The base station radiation, mobile communication base station facilities that emit radiation. Mobile communication system, transmitting and receiving a signal of infinite space rely on mobile station transmit antennas to achieve, in the transmission signal, the transmitting antenna towers have certain amount of electromagnetic radiation intensity. 4g cell phone jammer As for the radiation base body how great the impact of the current international agencies are a lot of this research, no clear conclusion.
Antenna (2) of the base station
Each base station generally has three sectors, each sector will transmit to the one direction, cover a certain range, such as the most general case, a three-sector base station, a sector antenna is aligned with the north which direction, the coverage of 120 degrees, one sector is aligned with another easterly direction, the coverage of 120 degrees, and the direction of a sector of Zhunxi Nan coverage of 120 degrees, so that three sectors of 360 degrees capable of four weeks full coverage.
4g cell phone jammer Each sector has a to multiple antennas, these antennas transmit signals on the one hand, while receiving a signal from a pass over the phone. If the multi-antenna, the larger the sum of the power radiated in general.
A pair of antennas for each sector on the map, each pair of antenna coverage of 120 degrees, three pairs of antenna around 360-degree coverage.
(3) GSM communication base station transmit power is calculated
GSM base station is now using frequency division multiplexing and time division multiplexing manner, thereby increasing the capacity of the base station, that is, a transmitting station having a plurality of frequencies, a frequency of a common emitter circuit board called professional saying carrier frequency, in general, the transmission power of a frequency is generally about 15w to 20W.
In urban areas, due to the large volume of traffic, but also to support mobile Internet and other services, urban most general configuration of each base station sector 6 frequencies above, if the three sectors, the frequency of its configuration is generally 6X3 = 18 frequencies above. If the 18 frequencies such work. It radiated power in 18X15 = 270W or more, if the configuration of multi-frequency words, the transmitted power is even greater. 4g cell phone jammer
Generally the largest mobile phone radiation power was 2W, base 270W radiated power is relatively large, the base station will need a dedicated room and power supply facilities, power consumption is also great, most of the rooms even have to specially configured air conditioning cooling.
Another station is 24 hours are launching mobile phones generally only transmit a signal when a call.
Radiation pattern (4) GSM communication base station
The basic radiation pattern is such that the base station, each sector has a base station radio frequency, this frequency is transmitted at full power 24 hours a day, some of the information that the main emission frequency of the sector. Other frequencies mainly in the conversation when the transmitter, transmit power can be adjusted automatically according to the call's distance.
Radio frequency radiation can be seen as a continuous radiation method, other frequencies are pulsed radiation mode. Now many international research institutions that pulsed radiation way way more dangerous than continuous radiation, but not conclusive. The base station that has a continuous radiation have pulsed radiation.
(5) What are the radiation intensity on the largest residential
After this long-term testing and research center showed that base station antennas can be irradiated directly to the house is often the most affected, in other words, between the antenna and the house did not effectively block electromagnetic field propagation in free space attenuation is small, this time to house the radiation intensity is generally larger.
If housing and base station antennas after the interval of a few houses, and the base station antenna can not irradiated directly to homes, this time, the radiation intensity is much smaller.
A house, the underlying residential electromagnetic field strength to be smaller, high-level residential electromagnetic field strength is larger.
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