Mobile Phone Radiation Shield, SAR and The Iphone 3G Part 1


Mobile Phone Radiation Shield, SAR and The Iphone 3G Part 1

Mobile Phone Radiation Shield

Cell Phone Antenna Radiation

EarthCalm Home Protection

With over 4 billion people on earth extensively using cell phones, the demand for new devices has gone up manifold. There is also a major concern in the minds of iPhone 3GS the users about the radiations emitted by these devices. Recent studies and research work shows significantly higher risks for brain cancer and salivary gland tumors, migraines, vertigo, and behavioral problems among people using cell phones.

Members of Environmental Working Group (EWG) which is carrying out research on the subject, believes that until scientists know a bit more about these radiations, it will be prudent for consumers to buy phones with the lowest emissions. Giving due cognizance to this premise, the new iPhone 3GS by Apple has much better results as far as emission of EM (electromagnetic) energy is concerned than its predecessors.

SAR (Specific Absorption Rate) from a cell phone is the extent to which the user is exposed or subjected to. Radiations are harmful no doubt, and that’s why SAR limits are imposed. Speaking, from health point of view, the lower the SAR, the better a cell phone is. Like all phones, iPhone’s also contain radio transmitters and receivers. When on, iPhone receives and sends out radio frequency (RF) energy through its antenna. iPhone’s antenna is located on the backside near the dock connector.

iPhone is designed and manufactured not to exceed limits for exposure to RF energy value set by the Federal Communications Commission (FCC) of the United States and the recommendations of the Council of the European Union. The SAR limit set by the FCC is 1.6 watts per kilogram (W/kg). The SAR limit set by the Council of the European Union is 2.0 W/kg. Tests for SAR are conducted using standard operating positions (i.e., at the ear and worn on the body) specified by the FCC and the Council of the European Union, with iPhone transmitting at its highest certified power level in all tested frequency bands.

Although SAR is determined at the highest certified power level, the actual SAR level of iPhone while in operation can be well below the maximum value because iPhone has a special feature that adjusts its cellular transmitting power based in part on proximity to the wireless network. In general, the closer an iPhone user is to a cellular base station, the lower the cellular transmitting power level will be.

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