| 摘要 |
The smart directional radiation protection system is a design and technique to protect the user form mobile device radiations by forming actively tunable electromagnetic shadow on user facing direction with dynamic radiation pattern approach manipulated by RF/Antenna system that works mainly by scanning or detecting user device proximity environment with property & position sensing, device orientation, user head & hand hold effect, signal quality parameters and operating modes while maintaining the radiations on other directions to sustain communication. The smart directional radiation protection system consist of (a) a sensor system 130 to determine the change in user proximity with its property & position sensing, device orientation, usage scenarios or operating modes and accordingly generate the trigger signal 230; (b) a processing unit for manipulation of interrupt control signal 140 according to trigger signal, antenna sensitivity, DOA and signal quality parameters; (c) An active directional transmit power or radiation controller 120 that works based on control signal; (d) Antenna system [E.g. Tunable - metamaterial or EBG or plasma antennas] 110 capable of achieving dynamic radiation pattern coupled with directional transmit power controller 120 that controls the radiation on user 170 facing direction to reduce SAR and also restores radiation according to parameters and configurations to optimise communication. |
