Simultaneous Body SAR Values

Simultaneous Body SAR Values

In recent years, there has been growing concern about the potential health effects of exposure to radiofrequency radiation from mobile phones, particularly when held close to the body. SAR testing is an important tool for assessing the potential health risks associated with this type of exposure. The SAR measurement procedure and phantom design aim to provide a standardized and repeatable method for measuring the amount of RF energy absorbed by the body when using a mobile phone.

As with the head SAR measurement, the simultaneous body SAR value is an important metric to consider. This value represents the amount of radiation absorbed by the body when multiple transmitters, such as cellular and WLAN signals, are active simultaneously. To measure this value, SAR testing is performed on both the cellular and WLAN signals separately, and the highest reported SAR result is selected for each test position. These results are then summed together, assuming the antennas are co-located, to determine if the simultaneous SAR is within the safety limit of 1.6 W/kg in the USA.

If the simultaneous SAR value is over the limit, the two results are summed again using the Combined Fast SAR feature of ComSEMCAD X software. This is because the hot spots of the two summed measurements may not be exactly on top of each other, so using the software can produce a more accurate result. If the final value is within the safety limit, the phone is considered safe for use.

It is important to note that SAR values are not the only factor to consider when assessing the potential health effects of mobile phone use. Other factors such as duration of use, distance from the body, and specific absorption rates of different tissues should also be taken into account.

Conclusion

SAR testing is a valuable tool for assessing the potential health risks associated with mobile phone use. The use of a standardized phantom and testing procedure allows for accurate and repeatable measurements of the amount of RF energy absorbed by the body when using a mobile phone. It is important to note that SAR values are just one factor to consider when assessing the potential health effects of mobile phone use, and consumers should take steps to minimize their exposure to radiofrequency radiation, such as using hands-free devices or keeping the phone away from the body.

FAQs

Q1. What is the difference between head and body SAR measurements?

Head SAR measurements are used to assess the potential health risks associated with the use of mobile phones near the head, while body SAR measurements assess the risks associated with using the phone near other parts of the body.

Q2. Are SAR values the only factor to consider when assessing the potential health risks of mobile phone use?

No, SAR values are just one factor to consider. Other factors such as duration of use, distance from the body, and specific absorption rates of different tissues should also be taken into account.

Q3. What is the safety limit for SAR values in the USA?

The safety limit for SAR values in the USA is 1.6 W/kg.

Q4. How can consumers minimize their exposure to radiofrequency radiation?

Consumers can minimize their exposure to radiofrequency radiation by using hands-free devices or keeping the phone away from the body.