WO2022214859A1 - Structure pour réduire l'émission de rayonnement à partir d'un dispositif - Google Patents

Structure pour réduire l'émission de rayonnement à partir d'un dispositif Download PDF

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Publication number
WO2022214859A1
WO2022214859A1 PCT/IB2021/054296 IB2021054296W WO2022214859A1 WO 2022214859 A1 WO2022214859 A1 WO 2022214859A1 IB 2021054296 W IB2021054296 W IB 2021054296W WO 2022214859 A1 WO2022214859 A1 WO 2022214859A1
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WO
WIPO (PCT)
Prior art keywords
radiation
piece
cover
predefined
reduce
Prior art date
Application number
PCT/IB2021/054296
Other languages
English (en)
Inventor
Amit Yoshi
Original Assignee
Amit Yoshi
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 Amit Yoshi filed Critical Amit Yoshi
Publication of WO2022214859A1 publication Critical patent/WO2022214859A1/fr

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
    • H01Q17/001—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems for modifying the directional characteristic of an aerial
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
    • H01Q17/005—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems using woven or wound filaments; impregnated nets or clothes
    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/18—Telephone sets specially adapted for use in ships, mines, or other places exposed to adverse environment
    • H04M1/185—Improving the rigidity of the casing or resistance to shocks

Definitions

  • Embodiments of a present disclosure relate to reducing emission of radiations from a device, and more particularly to a structure to reduce radiation emission from the device.
  • the exposure of the human body to radiations with different frequencies is increasing.
  • the radiations are harmful to the human body, and hence prolonged exposure of the human body to such radiations causes several diseases such as cancer, skin diseases, degenerative diseases, and the like.
  • the different types of radiation that are harmful to the human body are microwaves, radio waves, electrical waves, magnetic waves, and the like.
  • a method includes designing of ear covers made of a material which shields the radiations emitted by a device such as a mobile phone used for calling purpose as the device would be closer to ears while calling.
  • a device such as a mobile phone used for calling purpose
  • a device such as a mobile phone used for calling purpose
  • the ear covers are troublesome to wear.
  • such an approach provides limited protection from the radiations as only ears are protected and other parts of the human body remain exposed to the radiations that are emitted b the device while performing non-calling activities such as browsing, playing games, watching videos, and the like.
  • a method includes designing solid metal plates to cover a back of the device or a front of the device to reduce the emission of radiation from the device.
  • shape and size of the solid metal plates are fixed and it also blocks the radiations which are needed by the device to perform several operations, thereby making the approach less flexible, less reliable, and less efficient.
  • a structure to reduce radiation emission from a device includes an anti-radiation shield configured to be incorporated inside of a back cover of the device.
  • the anti-radiation shield includes at least one of a piece of a predefined shape and at least two pieces mechanically coupled with each other to form the predefined shape.
  • the anti-radiation shield is composed of material.
  • the material includes at least one of a laminated metal foil, a metal sheet, an anti-radiation fabric, a carbon fiber fabric, and a metal mesh.
  • the anti-radiation shield includes a predefined thickness.
  • the anti-radiation shield is configured to cover one or more target regions on the device to reduce the radiation emission from the corresponding one or more target regions.
  • the anti-radiation shield includes one or more openings to enable access to one or more connectors of the device.
  • a structure to reduce radiation emission from a device includes an anti-radiation sheet.
  • the anti-radiation sheet includes a first piece of a first predefined shape.
  • the first piece is configured to be incorporated on a first surface of a front flip section of a device cover covering a screen of the device.
  • the first piece is configured to reduce the radiation emission from the corresponding screen of the device.
  • the structure also includes a second piece of a second predefined shape mechanically coupled to the first piece at a first predefined height.
  • the second piece is configured to be incorporated on a first surface of a first section of the device cover covering a left side of the device.
  • the second piece is configured to reduce the radiation emission from the left side of the device.
  • the structure also includes a third piece of a third predefined shape mechanically coupled to the second piece at a second predefined height, wherein the third piece is configured to be incorporated on a first surface of a second section of the device cover covering a left portion of a backside of the device.
  • the third piece is configured to reduce the radiation emission from the left portion of the backside of the device.
  • the anti-radiation sheet is composed of one or more layers of material.
  • the material includes an anti-radiation fabric, a carbon fiber fabric, and a metal mesh.
  • the anti-radiation sheet comprises a predefined thickness.
  • a structure to reduce radiation emission from a device includes an anti-radiation shield.
  • the anti radiation shield is configured to be incorporated on a first surface of a back cover section of a device cover.
  • the anti -radiation shield is configured to cover one or more target regions on the device to reduce the radiation emission from the corresponding one or more target regions.
  • the structure also includes an anti-radiation sheet.
  • the anti-radiation sheet is configured to be incorporated on a first surface of a front flip section of the device cover.
  • the anti-radiation sheet is configured to reduce the radiation emission from at least one of a screen, a left side, and a left portion of a backside of the device.
  • FIG. la is a schematic representation of an isometric view of a structure to reduce radiation emission from a device in accordance with an embodiment of the present disclosure
  • FIG. lb is a schematic representation of an isometric view of the structure to reduce the radiation emission from the device of FIG. la in accordance with another embodiment of the present disclosure
  • FIG. 2 is a schematic representation of an isometric view of an exemplary embodiment of the structure of FIG. la with a back cover in accordance with an embodiment of the present disclosure
  • FIG. 3a is a schematic representation of a front view of the structure of FIG. la with the back cover in accordance with an embodiment of the present disclosure
  • FIG. 3b is a schematic representation of a top view of the structure of FIG. la in accordance with an embodiment of the present disclosure
  • FIG. 4 is a schematic representation of an isometric view of a structure to reduce radiation emission from a device in accordance with another embodiment of the present disclosure
  • FIG. 5 is a schematic representation of an exemplary embodiment of an isometric view of the structure of FIG. 4 with a device cover in accordance with an embodiment of the present disclosure
  • FIG. 6a is a schematic representation of a front view of the structure of FIG. 4 with the device cover in accordance with an embodiment of the present disclosure
  • FIG. 6b is a schematic representation of a top view of the structure of FIG. 4 in accordance with an embodiment of the present disclosure.
  • FIG. 7 is a schematic representation of a front view of a structure to reduce radiation emission from a device with a device cover in accordance with yet another embodiment of the present disclosure.
  • Embodiments of the present disclosure relate to a structure to reduce radiation emission from a device.
  • the term “radiation” is defined as energy that comes from a source and travels through space, and may be able to penetrate various materials.
  • the device emits one or more radiations such as radiofrequency energy, microwave energy, electrical energy, magnetic energy, and the like.
  • the one or more radiation emitted by the devices is harmful to the human body and hence the emission may have to be prevented or reduced.
  • the structure described hereafter in FIG. la is the structure to reduce the radiation emission from the device.
  • FIG. la is a schematic representation of an isometric view of a structure (10) to reduce radiation emission from a device in accordance with an embodiment of the present disclosure.
  • FIG. lb is a schematic representation of an isometric view of the structure (10) to reduce the radiation emission from the device of FIG. la in accordance with another embodiment of the present disclosure.
  • the device may include a cellphone, tablet, a personal digital assistant (PDA), and the like. Basically, people use a cover or a casing to cover the device for multiple reasons such as, but not limited to, for better grip, to protect a screen of the device, to protect from dirt and spills, to personalize a look of the device, or the like.
  • the cover may include a back cover, a device cover with a front flip cover, the back cover or the device cover with an additional holder at the back, or the like.
  • such a cover is not capable of preventing or reducing one or more radiations emitted by the device, wherein the device emits the one or more radiations as a result of the device performing one or more operations.
  • the one or more operations may include making a voice call for communication purposes, making a video call for communication purposes, performing non-call-related activities, and the like.
  • the structure (10) disclosed in the present disclosure according to FIG. la and FIG. lb when incorporated in the cover used to cover the device, the radiation emission from the device may be reduced.
  • the non-call-related activities may include browsing videos, streaming music, background data download, and the like.
  • FIG. 2 is a schematic representation of an exemplary embodiment of an isometric view of the structure (10) of FIG. la with a back cover (20) in accordance with an embodiment of the present disclosure.
  • FIG. 3a is a schematic representation of a front view of the structure (10) of FIG. la with the back cover (20) in accordance with an embodiment of the present disclosure.
  • FIG. 3b is a schematic representation of a top view of the structure (10) of FIG. la in accordance with an embodiment of the present disclosure.
  • the structure (10) includes an anti -radiation shield (30) configured to be incorporated inside of the back cover (20) of the device.
  • anti radiation shield is defined as a shield which is composed of a material which is capable of absorbing, deflecting, preventing, reducing, or the like the one or more radiations emitted by the device when incorporated inside of the back cover of the device.
  • the anti-radiation shield (30) includes at least one of a piece of a predefined shape and at least two pieces mechanically coupled with each other to form the predefined shape.
  • the predefined shape may include an L-shape (FIG. la).
  • the predefined shape may include a shape of flat strips (FIG. lb).
  • the at least two pieces of the anti-radiation shield (30) may include a bottom piece and a left side piece.
  • the at least two pieces may include a predefined width.
  • a predefined width of the bottom piece may include about 0.5 inches to about 1 inch.
  • a predefined width of the left side piece may include about 0.5 inches to about 1.5 inches.
  • the anti-radiation shield (30) is composed of material.
  • the material includes at least one of a laminated metal foil, a metal sheet, an anti-radiation fabric, a carbon fiber fabric, a metal mesh, and the like.
  • the anti radiation shield (30) includes a predefined thickness.
  • the laminated metal foil may include at least one of Copper, Aluminum, Nickel, and the like.
  • the predefined thickness of the laminated metal foil may include about 100 microns to about 500 microns. In one exemplary embodiment, the predefined thickness of the laminated metal foil may be greater than 500 microns.
  • the laminated metal foil may be flexible and easily moldable. Also, in an embodiment, a performance of the laminated metal foil may be satisfactory in reducing an emission of microwave radiations from the device up to about 95 percent (%).
  • the metal sheet may include at least one of Copper, Aluminum, Nickel, Mu-metal, and the like.
  • the predefined thickness of the metal sheet may include about 0.1 millimeters (mm) to about 0.5 mm. In one exemplary embodiment, the predefined thickness of the metal sheet may be greater than 0.5 mm.
  • the anti-radiation fabric may be defined as a fabric made out of a composite material which is capable of absorbing, deflecting, preventing, reducing or the like the one or more radiations emitted by the device. In such embodiment, the material being a fabric, the anti-radiation fabric may be highly flexible and easily moldable into any required form. In one exemplary embodiment, the performance of the anti-radiation fabric may be greater than that of the laminated metal foil and the metal sheet.
  • the readings taken for microwave radiation emission may be exceeding a maximum calibrated reading in a microwave meter, which is 9.99 milliwatt per centimeter square (mW/cm 2 ).
  • a general estimation may include the device being capable of emitting over about 100 mW/cm 2 of the radiation.
  • the readings are several times above a permissible limit of about 5 mW/cm 2 . Further, the measurement process was continued for about 120 seconds and then the corresponding readings were obtained.
  • the radiation emission measurements are taken while browsing videos as video streaming consumes a lot of data and also leads to a lot of electrical radiation emission and magnetic radiation emission while downloading them using a cellular network connection.
  • the Wi-Fi data may have to be disabled in the device, and the device may have to use the cellular network.
  • the readings taken for the magnetic radiation emission may be in the range of about 70 microteslas (uT) to about 80 uT. In real- time, the reading may go up to about 100 uT.
  • the reading taken for the electrical radiation emission may be in the range of about 170 volts per meter (v/m) to about 180 v/m. This proves that the one or more target regions are indeed receiving harmful levels of the microwave radiations, the electrical radiations, and the magnetic radiations while downloading or uploading data using the cellular network.
  • the radiation emission measurements are taken while browsing videos.
  • the Wi-Fi data may have to be disabled in the device, and the device may have to use the cellular network.
  • the readings taken convey that, the readings for the microwave radiation emission dropped below the permissible limit of about 5 mW/cm 2 , that is: to a range of about 0.5 mW/cm 2 to about 2.5 mW/cm 2 .
  • the readings below the 5 mW/cm 2 are considered to be safe. Therefore, an average reduction of over 95% in the microwave radiation emission may be recorded by incorporating the anti-radiation shield (30). Also, the readings for the magnetic radiation emission dropped to a range of about 40 uT to about 50 uT and the readings for the electrical radiation emission dropped to a range of about 110 v/m to about 120 v/m. Therefore, an average reduction of over 50 % in the magnetic radiation emission and the electrical radiation emission may be recorded by incorporating the anti radiation shield (30). Further, the measurement process was continued for about 120 seconds and then the corresponding readings were obtained.
  • the carbon fiber fabric is defined as a fabric made out of carbon fiber.
  • the carbon fiber fabric may be very effective in shielding the microwave energy, the electrical energy, and the magnetic energy.
  • the metal mesh may be made from a material including copper or aluminum as the corresponding material are effective in blocking the microwave energy.
  • the anti-radiation shield (30) is configured to cover the one or more target regions on the device to reduce the radiation emission from the corresponding one or more target regions.
  • target region is defined as a region on the device which emits the one or more radiations as a result of the device performing the one or more operations.
  • the one or more target regions may include at least one of a left side of the device, a bottom side of the device, a left section on a backside of the device, a bottom section on the backside of the device, and the like.
  • the anti-radiation shield (30) includes one or more openings to enable access to one or more connectors of the device.
  • the one or more openings may be provided on a surface of the anti-radiation shield (30) which covers the bottom side of the device.
  • the one or more connectors may include a Universal Serial Bus (USB) connector, an earphone connector, a speaker opening, and the like.
  • USB Universal Serial Bus
  • a size of the one or more openings may be much smaller than a wavelength of the one or more radiations emitted by the device, and hence chances of leaking of the one or more radiations from the one or more openings may be negligible.
  • dimensions of the anti-radiation shield (30) may vary.
  • FIG. 4 is a schematic representation of an isometric view of a structure (10) to reduce the radiation emission from the device in accordance with another embodiment of the present disclosure.
  • FIG. 5 is a schematic representation of an exemplary embodiment of an isometric view of the structure (10) of FIG. 4 with a device cover (40) in accordance with an embodiment of the present disclosure.
  • the term “device cover” is defined as a cover that includes a front flip section (50) to cover the screen of the device along with a back cover section (60) that covers the backside of the device.
  • the device cover (40) maybe not capable of preventing or reducing the one or more radiations emitted by the device.
  • the structure (10) disclosed in the present disclosure according to FIG. 4 when incorporated on a first surface (70) of the device cover (40), the radiation emission from the device may be reduced.
  • the first surface (70) may be defined as a surface of the device cover (40) facing the device and not away from the device.
  • FIG. 6a is a schematic representation of a front view of the structure (10) of FIG. 4 with the device cover (40) in accordance with an embodiment of the present disclosure.
  • FIG. 6b is a schematic representation of a top view of the structure (10) of FIG. 4 in accordance with an embodiment of the present disclosure.
  • the structure (10) includes an anti-radiation sheet (80).
  • anti -radiation sheet is defined as a sheet which is composed of a material which is capable of absorbing, deflecting, preventing, reducing or the like the one or more radiations emitted by the device when incorporated into the first surface (70) of the device cover (40).
  • the anti-radiation sheet (80) includes a first piece (90) of a first predefined shape.
  • the first predefined shape may include a rectangular shape.
  • the first piece (90) is configured to be incorporated on a first surface (100) of the front flip section (50) of the device cover (40) covering the screen of the device.
  • the first surface (100) may be defined as a surface of the front flip section (50) of the device cover (40) facing the screen of the device.
  • the first piece (90) incorporated on the first surface (100) of the front flip section (50) of the device cover (40) may cover the corresponding first surface (100) completely.
  • the first piece (90) incorporated on the first surface (100) of the front flip section (50) of the device cover (40) may cover the corresponding first surface (100) partially.
  • the first piece (90) is configured to reduce the radiation emission from the corresponding screen of the device.
  • the screen is also one of the one or more target regions on the device.
  • the structure (10) also includes a second piece (110) of a second predefined shape mechanically coupled to the first piece (90) at a first predefined height.
  • the second predefined shape may include the rectangular shape.
  • the second piece (110) is configured to be incorporated on a first surface (120) of a first section (130) of the device cover (40) covering a left side of the device.
  • the first surface (120) may be defined as a surface of the first section (130) of the device cover (40) facing the left side of the device.
  • the second piece (110) incorporated on the first surface (120) of the first section (130) of the device cover (40) may cover the corresponding first surface (120) completely.
  • the second piece (110) incorporated on the first surface (120) of the first section (130) of the device cover (40) may cover the corresponding first surface (120) partially.
  • the second piece (110) is configured to reduce the radiation emission from the left side of the device.
  • the structure (10) also includes a third piece (140) of a third predefined shape mechanically coupled to the second piece (110) at a second predefined height.
  • the third predefined shape may include the rectangular shape.
  • the third piece (140) is configured to be incorporated on a first surface (150) of a second section (160) of the device cover (40) covering a left portion of a backside of the device.
  • the first surface (150) may be defined as a surface of the second section (160) of the device cover (40) facing the left portion of the backside of the device.
  • the third piece (140) incorporated on the first surface (150) of the second section (160) of the device cover (40) may cover the corresponding first surface (150) completely.
  • the second piece (110) incorporated on the first surface (150) of the second section (160) of the device cover (40) may cover the corresponding first surface (150) partially.
  • the third piece (140) is configured to reduce the radiation emission from the left portion of the backside of the device.
  • the second predefined height is greater than the first predefined height.
  • the second piece (110) and the third piece (140) along with the first piece (90) may form a curvature of the anti-radiation sheet (80) on a left of the device.
  • the anti-radiation sheet (80) is composed of one or more layers of material.
  • the material includes the anti-radiation fabric, the carbon fiber fabric, the metal mesh, and the like.
  • the anti-radiation sheet (80) includes a predefined thickness.
  • the readings taken for microwave radiation emission may be exceeding a maximum calibrated reading in a microwave meter, which is 9.99 mW/cm 2 .
  • a general estimation may include the device being capable of emitting over about 100 mW/cm 2 of the radiation.
  • the readings are several times above a permissible limit of about 5 mW/cm 2 to about 10 mW/cm 2 .
  • the radiation emission measurements are taken while a voice call using a cellular network connection.
  • the Wi-Fi data, the VoWiFi data, and the mobile data may have to be disabled in the device, and the device may have to use the cellular network.
  • the readings taken for the magnetic radiation emission may be in the range of about 20 uT to about 40 uT. In real-time, the reading may go up to about 250 uT.
  • the reading taken for the electrical radiation emission may be in the range of about 300 v/m to about 400 v/m. This proves that the one or more target regions are indeed receiving harmful levels of the microwave radiations, the electrical radiations, and the magnetic radiations while making a voice call using the cellular network.
  • the radiation emission measurements are taken while making a voice call.
  • the Wi-Fi data, the VoWiFi data, and the mobile data may have to be disabled in the device, and the device may have to use the cellular network.
  • the readings taken convey that, the readings for the microwave radiation emission dropped below the permissible limit of about 5 mW/cm 2 , that is: to a range of about 0.5 mW/cm 2 to about 4 mW/cm 2 .
  • the readings below the 5 mW/cm 2 are considered to be safe. Therefore, an average reduction of over 95% in the microwave radiation emission may be recorded by incorporating the anti-radiation shield (30).
  • the readings for the magnetic radiation emission dropped to a range of about 0.5 uT to about 5 uT and the readings for the electrical radiation emission dropped to a range of about 5 v/m to about 10 v/m.
  • the back cover section (60) of the device cover (40) may have to be removed and the backside of the device may have to be kept open to enable a free flow of one or more signals which are to be received by the device for the device to perform the one or more operations.
  • the device cover (40) may have been made from one or more layers of synthetic materials such as thermoplastic polyurethane (TPU), artificial leather, or the like.
  • FIG. 7 is a schematic representation of a front view of the structure (10) to reduce radiation emission from the device with the device cover (40) in accordance with yet another embodiment of the present disclosure.
  • the device cover (40) may include the front flip section (50) and the back cover section (60)
  • the structure (10) includes the anti-radiation shield (30).
  • the anti-radiation shield (30) is configured to be incorporated on a first surface (170) of the back cover section (60) of the device cover (40).
  • the anti-radiation shield (30) is configured to cover the one or more target regions on the device to reduce the radiation emission from the corresponding one or more target regions.
  • the structure (10) also includes the anti radiation sheet (80).
  • the anti-radiation sheet (80) is configured to be incorporated on the first surface (100) of the front flip section (50) of the device cover (40).
  • the anti radiation sheet (80) is configured to reduce the radiation emission from at least one of a screen, a left side, and a left portion of a backside of the device.
  • Various embodiments of the present disclosure enable covering of only the one or more target regions by keeping other regions on the device open such as regions surrounding the antenna of the device, thereby making the structure more efficient.
  • the structure is flexible and is mouldable in requested forms and shapes, thereby making the structure more reliable and convenient for use.
  • the structure not only shields harmful microwaves but also the magnetic waves and the electrical waves to an extent which is better than conventional approaches, thereby making the structure more efficient.
  • the structure provides protection to a groin area and an eye region of a human body from the one or more radiations that get leaked from form left side of the device while keeping the device in a pocket or while placing the device next to a face as the left side of the device is covered by the structure.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

L'invention concerne une structure permettant de réduire l'émission de rayonnement à partir d'un dispositif. La structure comprend un écran anti-rayonnement (30) conçu pour être incorporé à l'intérieur d'un couvercle arrière (20) du dispositif. L'écran anti-rayonnement (30) comprend au moins un élément d'une forme prédéfinie et au moins deux pièces couplées mécaniquement l'une à l'autre pour former la forme prédéfinie. L'écran anti-rayonnement (30) est composé d'un matériau comprenant au moins l'une d'une feuille métallique stratifiée, d'une feuille métallique, d'un tissu anti-rayonnement, d'un tissu de fibre de carbone et d'un treillis métallique. L'écran anti-rayonnement (30) comprend une épaisseur prédéfinie. L'écran anti-rayonnement (30) est conçu pour couvrir une ou plusieurs régions cibles sur le dispositif pour réduire l'émission de rayonnement à partir de la ou des régions cibles correspondantes. L'écran anti-rayonnement (30) comprend une ou des ouverture(s) pour permettre l'accès au ou aux connecteur(s) du dispositif.
PCT/IB2021/054296 2021-04-05 2021-05-19 Structure pour réduire l'émission de rayonnement à partir d'un dispositif WO2022214859A1 (fr)

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IN202141016041 2021-04-05
IN202141016041 2021-04-05

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017122220A1 (fr) * 2016-01-11 2017-07-20 Ranga Reddy Seelam Boîtier de téléphone mobile

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017122220A1 (fr) * 2016-01-11 2017-07-20 Ranga Reddy Seelam Boîtier de téléphone mobile

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BHATTACHARJEE SUMANA: "Protective Measures to Minimize the Electromagnetic Radiation", ADVANCE IN ELECTRONIC AND ELECTRIC ENGINEERING, RESEARCH INDIA PUBLICATIONS, 1 January 2014 (2014-01-01), pages 375 - 380, XP055979048, [retrieved on 20221108] *

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