SMART ACTIVE ANTENNA RADIATION PATTERN OPTIMISING SYSTEM FOR MOBILE DEVICES ACHIEVED BY SENSING DEVICE PROXIMITY ENVIRONMENT WITH PROPERTY, POSITION, ORIENTATION, SIGNAL QUALITY AND OPERATING MODES

摘要

The smart dynamic radiation pattern optimising system is a design and technique to actively shape & optimise the radiation pattern of mobile device controlled by smart RF/Antenna system with signal processing capability that works by sensing the change in device proximity environment with nature or property, orientation, position, location with signal quality parameters to protect the user by controlling radiation exposure, enhance RF signal quality and to save battery power. Mobile devices are handled in different proximity environment which influence the antenna performance due to electromagnetic interaction based on environments properties that leads to detuning, radiation pattern distortion, impedance mismatch etc which in turn degrades the signal quality. Also change in device orientation according to usage leads to power loss due to polarization mismatch. So when the signal quality degrades the system will sense & compute in an adaptive closed loop manner to actively optimise the radiation pattern according to scenarios. The design consist of (a) a sensor system (220) to determine the change in proximity environment [close vicinity] with property sensing, direction & position, device (antenna) orientation, user head & hand hold effect, usage scenarios or operating modes, location and accordingly generate the trigger signal (230); (b) a processing unit (150) for computing the interrupt control signal (140) according to trigger signal & existing signal quality parameters; (c) Smart active radiation pattern optimiser (120) that works based on control signal; (d) Antenna system (110) capable of achieving dynamic radiation pattern coupled with radiation pattern optimiser that actively shapes and controls the radiation pattern accordingly to improve signal quality and also restores radiation according to scenarios to optimise communication. Other aspects of the present invention are the same sensor system (220) is utilised to develop an application that guides the user locate & position the mobile device in living space to achieve optimised performance and also to protect the mobile device from theft.