SAR & HAC 규격동향

Embed Size (px)


SAR & HAC 규격동향. Definition of SAR. SAR (Specific Absorption Rate) 송신기로부터 인체에 흡수되는 단위질량 당 전자파의 양을 에너지로 표시한 것 . 단위는 watts per kilogram (W/kg). ICNIRP Guidelines. 국제비전리방사보호위원회 (ICNIRP) 가 전자파 인체노출 한계에 대한 Guideline 을 제시 2 W/kg (10g). 2 W/kg (10g). 유럽 일본. SAR Limits. - PowerPoint PPT Presentation

Text of SAR & HAC 규격동향

  • SAR & HAC

  • SAR (Specific Absorption Rate)


    watts per kilogram (W/kg).

    Definition of SAR

  • ICNIRP Guidelines


    Guideline 2 W/kg (10g)

    SAR LimitOccupational exposure limitGeneral public exposure limitWhole Body0.4 W/kg0.08 W/kgPartial Body (head & trunk)10 W/kg2 W/kgPartial Body(limbs)20 W/kg4 W/kg
  • 2 W/kg (10g) , 1.6 W/kg (1g) .

    1.6 W/kg (1g)


    SAR Limits

    2 W/kg (10g)

  • CE SAR Criteria

    Test Standard : EN50630 2001 Test Method : EN50361 2001 Test scope of SAR Evaluation Only Portable Device, Not Mobile Device Head SAR Measurement only Output power is more than 20mW In case of Mobile Device applying a far field RF

    exposure calculation according to EN50385/ EN50383

  • FCC SAR Criteria

    Test Standard : 47CFR Part 2.1093 Test Method : OET Bulletin 65, Supplement C(July 2001) Test scope of SAR Evaluation Transmitter use distance < 20cm from Body Head and Body SAR Measurements Use distance 20cm applying MPE calculation SAR Evaluation Criteria


    FCC KDB (Knowledge Data Base)

    Handset laptop Multi-transmitter


  • Overview RF Exposure KDBs

    KDB 447498 Mobile and Portable Device RF Exposure Procedures and Equipment Authorization Policies

    General SAR thresholds and conditions

    Simultaneous-Tx() devices

    KDB 616217 or 648474 Simultaneous-Tx() multi-Tx product

    Laptops, tablets, body-worn, and hand-held devices

    KDB 616217 SAR Evaluation Considerations for Laptop

    Computers with Antennas Built-in on Display Screens

    , , test reductions .

    KDB 648474 SAR Evaluation Considerations for Handsets

    with Multiple Transmitters and Antennas


  • RF field



    HAC (Hearing Aid Compatibility) ?

  • 10% 80% 5 2003 7 FCC



  • 1996 ANSI C63 SC8 (medical devices)

    Task Group

    ANSI C63.19-2001 Standard

    2007 Version

    800 ~ 3000 MHz RF-Emission, T-coil mode

    RF Immunity

    ANCI C63.19

  • ANCI C63.19 2007

    2007 Version 2006, 2007 Version 2009 2010 2007 Version . 2006 Version2007 VersionRF Emission 1cm 1.5cmT-coil Rating T Rating Category Level .
  • Operation of Wireless Device and Hearing Aid

  • Organization and use of ANSI C63.19

  • RF E-field Emission, RF H-field Emission Measurement

    RF Emissions Test

  • RF E & H field Emission Measurement of WD

    Example E-field Scan

    The Grid is 5X5 area that is divided into 9 evenly

    sized blocks or sub-grids.

  • RF E & H field Emission Measurement of WD

    M-Rating Determination

    Multiply the peak emissions values by an appropriate probe modulation factor.

    For GSM signal,

    Crest Factor = 26frames X 8times-slots =8.3

    25frames used

    For ideal)

    Probe Modulation Factor = Crest Factor = 2.88

    Peak Field Intensity = 20 log ( Raw X PMF)

  • RF E & H field Emission Measurement of WD

    M Rating Determination : M3, M4 PASS AWF shall be used for the

    standard transmission protocols

    Articulation Weighting Factor (AWF)

  • T-coil signal Test

    Three quantities are measured and evaluated.

    1. Field intensity of desired signal at the center of the audio band.

    2. Frequency response of the desired signal measured

    across the audio band.

    3. Signal quality, which is defined as the difference between

    the desired and undesired magnetic field levels.

  • T-coil Measurement setup in call mode

  • T-coil Measurement setup in call mode



    Base Station Simulator



    AM 1D Probe

  • T-coil Performance

    Axial and Radial Field Intensity

    All Orientations of the magnetic field, in the axial, horizontal

    and Vertical position along the measurement plane

    Shall be -18 dB (A/m) at 1KHz, in 1/3 octave band filter.

    Frequency Response

    Signal quality

  • T-coil Performance

    Frequency response

    Magnetic field frequency response for WDs with a field

    between -15dB (A/m) at 1 kHz

  • T-coil Performance

    Frequency response

    Magnetic field frequency response for WDs with a field

    that exceeds -15dB (A/m) at 1 kHz

  • T-coil Performance

    Signal quality

  • Hearing Aid compatibility

    System performance classification table

  • FCC Requirement for Manufacturers & Service providers

    2008 Manufacturer requirements

    M3 1/3


    2009 2 50% M3

    2008 Service provider requirements

    M3 50% 8

    T3 1/3

    2009 2

    (CDMA, GSM)

  • No differences in form, features, or user capabilities, or that

    only differentiate particular carrier

    Not counted as distinct models

    Change in the hearing aid compatibility rating

    give a new model name/number

    Definition of a Model

    Change in M or T rating

    form, features of capabilities. in change

  • 2007 ANSI C63.19 establishes standards only for certain

    air interfaces in the 800-950 MHz and 1.6-2.5 GHz bands

    Testing cannot be performed, and no rules currently apply, outside these bands/interfaces

    Bands and Modes without Standards

    FCC adopted streamlined process for adopting future

    expansions of Standard

  • handsets must meet standards in all frequency bands,

    all air interfaces. Technical standards exists

    No multi-band/multi-mode phones without standards currently exist. Except for Wi-Fi

    Multi-Band/Multi-Mode Phones

    Multi-band/multi-mode phones with Wi-Fi voice capability

    Be counted as Hearing aid-compatible under FCC rules

    Labeling must disclose that handset is not rated for

    Wi-Fi operation

    ANSI ASC C63 consider new technologies & deciding what

    rules to establish going forward

  • Q&A