WO2012066563A3 - Smart radiation protection system for mobile device to reduce sar with actively tunable electromagnetic shielding screen works by sensing device proximity environment with property, position, orientation, signal quality and operating modes - Google Patents

Smart radiation protection system for mobile device to reduce sar with actively tunable electromagnetic shielding screen works by sensing device proximity environment with property, position, orientation, signal quality and operating modes Download PDF

Info

Publication number
WO2012066563A3
WO2012066563A3 PCT/IN2011/000773 IN2011000773W WO2012066563A3 WO 2012066563 A3 WO2012066563 A3 WO 2012066563A3 IN 2011000773 W IN2011000773 W IN 2011000773W WO 2012066563 A3 WO2012066563 A3 WO 2012066563A3
Authority
WO
WIPO (PCT)
Prior art keywords
radiation
user
property
operating modes
electromagnetic shielding
Prior art date
Application number
PCT/IN2011/000773
Other languages
French (fr)
Other versions
WO2012066563A2 (en
Inventor
Muthukumar Prasad
Original Assignee
Muthukumar Prasad
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Muthukumar Prasad filed Critical Muthukumar Prasad
Publication of WO2012066563A2 publication Critical patent/WO2012066563A2/en
Publication of WO2012066563A3 publication Critical patent/WO2012066563A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3827—Portable transceivers
    • H04B1/3833—Hand-held transceivers
    • H04B1/3838—Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/245—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with means for shaping the antenna pattern, e.g. in order to protect user against rf exposure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
    • H01Q15/006—Selective devices having photonic band gap materials or materials of which the material properties are frequency dependent, e.g. perforated substrates, high-impedance surfaces
    • H01Q15/0066—Selective devices having photonic band gap materials or materials of which the material properties are frequency dependent, e.g. perforated substrates, high-impedance surfaces said selective devices being reconfigurable, tunable or controllable, e.g. using switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
    • H01Q15/0086—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Signal Processing (AREA)
  • Support Of Aerials (AREA)
  • Transceivers (AREA)
  • Transmitters (AREA)
  • Telephone Function (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The smart directional radiation protection system is a design and technique to protect the mobile 100 user form radiation utilising actively tunable electromagnetic shielding screen to controls the intensity of radiation 1.80 form antenna on user 170 facing direction to reduce SAR 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) Electromagnetic shielding screen [E.g. fabricated with tunable metamaterial or EBG] 110 capable of controlling the intensity of radiation from antenna 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.
PCT/IN2011/000773 2010-11-16 2011-11-11 Smart radiation protection system for mobile device to reduce sar with actively tunable electromagnetic shielding screen works by sensing device proximity environment with property, position, orientation, signal quality and operating modes WO2012066563A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN3431/CHE/2010 2010-11-16
IN3431CH2010 2010-11-16

Publications (2)

Publication Number Publication Date
WO2012066563A2 WO2012066563A2 (en) 2012-05-24
WO2012066563A3 true WO2012066563A3 (en) 2012-09-13

Family

ID=46084448

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2011/000773 WO2012066563A2 (en) 2010-11-16 2011-11-11 Smart radiation protection system for mobile device to reduce sar with actively tunable electromagnetic shielding screen works by sensing device proximity environment with property, position, orientation, signal quality and operating modes

Country Status (1)

Country Link
WO (1) WO2012066563A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8907847B2 (en) * 2012-05-02 2014-12-09 Hing S. Tong Directional antenna system for portable communication device
CN104053229B (en) 2013-03-14 2018-09-28 南京中兴软件有限责任公司 Mobile terminal, localization method and device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007067512A (en) * 2005-08-29 2007-03-15 Nec Corp Antenna assembly, portable information terminal, program, recording medium
CN101867385A (en) * 2010-06-21 2010-10-20 华为终端有限公司 Wireless communication device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007067512A (en) * 2005-08-29 2007-03-15 Nec Corp Antenna assembly, portable information terminal, program, recording medium
CN101867385A (en) * 2010-06-21 2010-10-20 华为终端有限公司 Wireless communication device

Also Published As

Publication number Publication date
WO2012066563A2 (en) 2012-05-24

Similar Documents

Publication Publication Date Title
GB2500520A (en) Smart directional radiation protection system for wireless mobile device to reduce sar
WO2012085932A3 (en) Smart rf signal quality enhancement system for mobile device with active dynamic radiation pattern achieved by sensing device proximity environment with property, position, orientation, signal quality and operating modes
US8766852B2 (en) Electronic device and control method thereof
WO2012066562A3 (en) Smart radiation protection system for mobile device to reduce sar by forming actively tunable electromagnetic shadow on user facing direction works by sensing device proximity environment with property, position, orientation, signal quality and operating modes
TWI665884B (en) Communication device and communication method
WO2013103948A3 (en) Wireless power transfer through conductive materials
MX340943B (en) Welding parameter control.
TW201212383A (en) Portable device with smart antenna
EP2518584A3 (en) Information processing apparatus and radio wave intensity control method
WO2014084878A3 (en) Sensor fusion algorithm
GB2466584A (en) Radio antenna assembly and apparatus for controlling transmission and reception of RF signals
GB2472745A (en) Coverage optimisation for wireless networks
WO2015054601A3 (en) Multi-sensor compressive imaging
WO2007117951A3 (en) Shielded surgical navigation system that determines the position and orientation of the tracked object with real and virtual dipoles
WO2011014375A3 (en) Antenna diversity for wireless tracking system and method
WO2012066563A3 (en) Smart radiation protection system for mobile device to reduce sar with actively tunable electromagnetic shielding screen works by sensing device proximity environment with property, position, orientation, signal quality and operating modes
GB201207300D0 (en) Apparatus and method for shielding jamming signal
JP2019506120A (en) System and method for generating power waves in a wireless power transfer system
US8928535B2 (en) Electronic apparatus
WO2008065601A3 (en) 3d control of data processing through handheld pointing device
TW201130193A (en) System and method for controlling antenna performance
WO2012076003A3 (en) Target attacking system
WO2015001425A3 (en) Airborne antenna system with controllable null pattern
JP2015175813A (en) Detection interference device
WO2020118180A3 (en) Shielding and/or enhancement of temperature-sensing rfid devices

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11841325

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11841325

Country of ref document: EP

Kind code of ref document: A2