Processing

Please wait...

PATENTSCOPE will be unavailable a few hours for maintenance reason on Saturday 31.10.2020 at 7:00 AM CET
Settings

Settings

Goto Application

1. WO2012066562 - 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

Publication Number WO/2012/066562
Publication Date 24.05.2012
International Application No. PCT/IN2011/000763
International Filing Date 04.11.2011
IPC
H04B 7/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
CPC
H01Q 1/245
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
1Details of, or arrangements associated with, antennas
12Supports; Mounting means
22by structural association with other equipment or articles
24with receiving set
241used in mobile communications, e.g. GSM
242specially adapted for hand-held use
245with means for shaping the antenna pattern, e.g. in order to protect user against rf exposure
H01Q 15/0066
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
15Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
0006Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
006Selective devices having photonic band gap materials or materials of which the material properties are frequency dependent, e.g. perforated substrates, high-impedance surfaces
0066said selective devices being reconfigurable, tunable or controllable, e.g. using switches
H01Q 15/0086
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
15Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
0006Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
0086said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials
H04B 1/3838
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details 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
38Transceivers, 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
3827Portable transceivers
3833Hand-held transceivers
3838Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use
H04B 17/12
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
17Monitoring; Testing
10of transmitters
11for calibration
12of transmit antennas, e.g. of the amplitude or phase
H04B 7/0617
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
06at the transmitting station
0613using simultaneous transmission
0615of weighted versions of same signal
0617for beam forming
Applicants
  • PRASAD, Muthukumar [IN]/[IN]
Inventors
  • PRASAD, Muthukumar
Priority Data
3433/CHE/201016.11.2010IN
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(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
(FR) SYSTÈME INTELLIGENT DE RADIOPROTECTION POUR DISPOSITIF MOBILE DESTINÉ À RÉDUIRE LE SAR PAR CRÉATION D'OMBRE ÉLECTROMAGNÉTIQUE À ACCORD DYNAMIQUE DANS LA DIRECTION DE L'USAGER, FONCTIONNANT PAR DÉTECTION DU MILIEU ENVIRONNANT DU DISPOSITIF FONDÉE SUR LES PROPRIÉTÉS, LA POSITION, L'ORIENTATION, LA QUALITÉ DU SIGNAL ET LES MODES EXPLOITATION DU DISPOSITIF
Abstract
(EN)
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.
(FR)
Le système intelligent de radioprotection directionnelle de l'invention est à la fois un concept et une technique qui protègent l'usager contre les rayonnements émis par un dispositif mobile en créant une ombre électromagnétique à accord dynamique dans la direction de l'usager, au moyen d'une approche diagramme de rayonnement dynamique mise en oeuvre par un système RF/antenne. Le système fonctionne principalement par balayage ou par détection du milieu environnant du dispositif de l'usager fondée sur les propriétés et la position du dispositif, l'orientation du dispositif, l'effet de tenue entre la tête et la main de l'usager, des paramètres de qualité du signal et des modes exploitation, avec éloignement simultané des rayonnements vers d'autres directions pour assurer la continuité de la communication. Le système comprend: a) un ensemble capteurs (130) qui détecte un changement du milieu environnant de l'usager fondé sur les propriétés et la position du dispositif, l'orientation du dispositif, des scénarios d'utilisation ou des modes exploitation, et génère en conséquence le signal de déclenchement (230); b) une unité centrale de traitement qui met en oeuvre le signal de commande d'interruption (140) en fonction du signal de déclenchement, de la sensibilité de l'antenne, de la DOA et des paramètres de qualité du signal; c) un régulateur dynamique de puissance ou de rayonnement d'émission directionnelle (120) qui fonctionne sur la base du signal de commande; d) un système d'antennes [par exemple des antennes métamatériaux ou EBG ou plasma accordables] (110) permettant d'obtenir un diagramme de rayonnement dynamique associé au régulateur de puissance d'émission directionnelle (120) qui bloque le rayonnement dans la direction de l'usager (170) de manière à réduire le SAR, mais aussi rétablit le rayonnement selon des paramètres et des configurations propres à optimiser la communication.
Latest bibliographic data on file with the International Bureau