Protecting the Signal
Enhancing Far Field Intensity
Your cell phone can be an important safety device. So protecting your phone's signal strength at all times is not just desirable, but essential. In free space, your phone can radiate in all directions. But when the phone is placed next to your head, between 48-68% of the Near Field Intensity (NFI) (see link) is absorbed by your head. The remainder of the signal which is not absorbed by the head "diffracts" around the user and can be used to communicate with the cell tower. This energy that continues toward the cell tower is measured as Far Field Intensity (FFI). This is the "good" kind of radiation that you do not want to reduce. Unfortunately, when NFI is absorbed by your head, it is not only a health risk; it also impedes the very FFI necessary to communicate with the cell tower.
Pong redirects EMR away from the user's head where it can then propagate as FFI toward the cell tower.
TRP increased .12 dB, SAR reduced 64%
The above 3D plots were developed from actual tests conducted at CETECOM, an independent, FCC certified test facility. The phone under test was the iPhone 3GS. The plot on the left shows the actual reduction of FFI (dark blue "dent") caused by the absorption of the EMR by the head. Once a Pong device is placed on the phone, the FFI deficit (light blue) improves from the EMR which has been redirected away from the user and propagated to the side of the head opposite the phone. The resulting increase in FFI enhances the omnidirectional capabilities of your phone and may actually improve your signal .