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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

  • US 20140128032A1
  • Filed: 06/20/2012
  • Published: 05/08/2014
  • Est. Priority Date: 06/20/2011
  • Status: Active Grant
First Claim
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1. The smart active antenna radiation pattern optimising system for wireless mobile device comprise ofa) A sensor system to actively generate trigger signal based on parameters comprising of—

  • particularly with actively sensing the nature or property [permittivity-ε

    , permeability-μ

    , conductivity-σ

    , susceptibility, dielectric, organic, inorganic] of device platform &

    environment, sensing environments—

    dimension, direction, multilayers, range or distance &

    position with respect to device, simultaneously sensing multiple environments surrounding the device, visual &

    infrared sensing, precise user &

    other environment recognition through property sensing, device [antenna] orientation sensing, direction, location &

    altitude sensing, MSP [Mobile sensing Platform], ambient intelligence, operating modes and usage scenarios of the device;

    b) A processing unit for computing the control signal based on parameters comprising of computing environments—

    property, dimension, direction, distance or range, multi layers &

    position with respect to device, precisely sensing effect of environment on antenna [radiation] based on property, precisely sensing human presence based on property with direction, dimension &

    range with respect to device, antenna detuning effects, effect on near &

    far fields, change in impedance, magnitude of radiation pattern distortion, property based user sensing thereby precisely sensing head, body &

    hand hold effects, face &

    iris recognition, SWR or return loss, antenna orientation, excitation phase, actively shared parameters between communicating devices, RSSI, channel capacity and existing signal quality parameters are all compared with predetermined &

    tested correlation table parameters in an active, adoptive and closed loop manner for precisely computing diffraction [limits θ

    ], effect of and effect on environment thereby computing beam width, gain &

    directivity ultimately to optimise antenna radiation pattern to enhance signal quality by directing radiation on feasible &

    right direction, protecting the user by controlling the radiation exposure on user facing direction while maintaining radiations on other directions to sustain communication and to save battery power by controlling radiation in less effective directions;

    c) Smart radiation pattern optimiser that act according to the control signal;

    d) Smart antenna system capable achieving dynamic radiation pattern is coupled with radiation pattern optimiser that actively controls, shapes and optimise the radiation pattern according to above mentioned scenarios;

    Also the system comprise of smart reconfigurable antenna system with the knowledge of relative antenna orientations to actively match the polarisation thereby to increase gain and control Polarisation Loss Factor [PLF];

    e) Smart RF/Transceiver system with signal processing capability which is a combination of transmitter and receiver coupled with radiation pattern optimiser;

    The system utilise signal processing capability &

    algorithms to act according to scenarios;

    f) The system actively sense, shapes &

    controls the radiation on user facing direction and affecting environments while maintaining the radiation on other directions to sustain communication;

    In extreme scenarios where the signal quality is very weak or drops below threshold the present system provides more flexibility by precisely sensing and improving signal quality as well as protecting user by maintaining the radiations on user facing directions according to SAR compliance and standards while altering the intensity on other direction to sustain communication;

    Besides controlling the direction of radiation based on nature of environment and reconfigure antenna system to match polarisation;

    the system actively restores radiation pattern according to scenarios to optimise communication;

    The system actively sense multiple environments surrounding the device and checks for appropriate space &

    environment based on its property, dimension, direction, range, location, position, device orientation, diffraction, usage scenarios, operating modes and signal quality parameters for selecting the best feasible directions to actively shape and optimise the radiation pattern;

    The system utilises sensors with predetermined &

    tested lookup tables to more precisely sense the mobile device in user pockets &

    pouch with orientation;

    g) The system comprise of hard, soft and combination switches according to the design for enabling and disabling the system.

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