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IEEE SCC 34 and IEC TC 106 Update: Progress in SAR/MPE Requirements for Evaluation of Wireless Devices. Kathy MacLean Chair, WG4 IEC TC 106; Vice-Chair, IEEE SCC34 President, APREL Laboratories Member of the Board, Spectrum Sciences Institute. e-mail kathym@aprel.com. Contents.

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  1. IEEE SCC 34 and IEC TC 106 Update: Progress in SAR/MPE Requirements for Evaluation of Wireless Devices Kathy MacLean Chair, WG4 IEC TC 106; Vice-Chair, IEEE SCC34 President, APREL Laboratories Member of the Board, Spectrum Sciences Institute e-mail kathym@aprel.com

  2. Contents • Current Climate • Need for Harmonized Standards and Reliable SAR Compliance Measurements • Technology Status • RF Exposure and Measurement Standards Developments • Status of Standards and Harmonization Efforts • IEEE SCC 34 • Overview and structure • SC2/p1528 • IEC TC 106 • Overview and structure • TC 106/PT 62209 • Harmonization – IEEE and IEC • Harmonization – IEC and CENELEC • Implementation/Approval Issues • Harmonization: Desired Outcome for GSC GSC-8, OTTAWA

  3. Need for Harmonized Standards and Reliable SAR Compliance Measurements • High Interest Area of RF Exposure started at RAST-4 (TSACC submission) • public pressure in relation to health effects of wireless devices waxes and wanes – but continues • precautionary principle and similar schemes – effect on measurement approach • increasing establishment and enforcement of varied RF safety limits by regulatory bodies • increasing number of testing laboratories involved in SAR measurements worldwide • increasing number of SAR auditing laboratories (formal and "voluntary") – notified bodies, TCB’s, CAB’s, etc. • recommendations/commitments in place to publish SAR values of wireless devices ("consumer wants to make choices knowing which device causes more SAR") • opinion that documented simple and reliable SAR data could be used in epidemiological studies GSC-8, OTTAWA

  4. RF Exposure and Measurement Standards Developments • IEEE (USA & International) • ICNRP, NCRP... • IEC (International) • CENELEC (Europe) • HC, IC, RABC, Spectrum Sciences Institute (Canada) • Australia/New Zealand Standards(Australia) • MIC (Korea) • ARIB (Japan) • other “derivative” country standards (China, Russia, Mexico…) GSC-8, OTTAWA

  5. IEEE SCC 34 • Work started in 1995 • Executive • Chair, Ronald Petersen • Secretary, Dr. John Osepchuk • Vice-Chair, Kathy MacLean • Subcommittees • SC1 – (Varanelli), small boat radar • SC2 – (Bassen), certification of wireless handsets • SC3 – (Tell), evaluation of RF protective clothing • Possibility of additional SC’s if needed – input solicited • Next meeting concurrent with Bioelectromagnetics Society meeting in Hawaii, 2003 GSC-8, OTTAWA

  6. IEEE SCC 34 SC2 Work on SAR Estimation • Work started in March 1997 • Two working groups (membership from Europe, Asia, North America) • WG 1 (Bassen) Experimental Measurements(> 65 members) • Recommended Practice for Determining the Spatial-Peak Specific Absorption Rate (SAR) in the Human Body Due to Wireless Communications Devices: Experimental Techniques • WG 2 (Beard) Computational Methods • P 1529 Recommended Practice for Determining the Spatial-Peak Specific Absorption Rate (SAR) in the Human Body Due to Wireless Communications Devices: Computational Techniques • Objective is to define both measurement and computations GSC-8, OTTAWA

  7. IEEE SCC 34 SC2 Work on SAR Estimation • Priority was given to WG 1 • Define measurement protocols • Define methods of measurement validation • Define interpretation of SAR data • priority to define characteristics of components used, i.e. probes, phantoms, etc. • Initial scope limited to handsets (head) • First ballot 25/26 approval; second ballot May 2003 • Standard approval expected June 2003 GSC-8, OTTAWA

  8. IEC TC 106 • Mandate for measurement methodologies only: completely limit-independent • Work started in November, 2000 in Montreal • Executive: • Chair Ronald Petersen (USA) • Vice-Chair Herman Leenders (Netherlands) • Secretary Michel Bourdages (Canada) • 5 Working Groups, 7 Project Teams • Two projects now entering CDV stage • “DC –300 GHz Two standards entering CDV (voting) proces • Demarcation between low frequency and high frequency is somewhat arbitrary (0 to approximately 100kHz and 100 kHz to 300 GHz) • Subjects which fall into both ranges will usually be treated in one group (eg. electronic article surveillance responsibility of WG4, high frequency) GSC-8, OTTAWA

  9. IEC TC 106 • WG1 (Deschamps) - Measurement and Calculation Methods for Low Frequency (0 to approx. 100 kHz electric and magnetic fields and induced currents – • WG1 will produce Basic Standards. • WG2 (Roux) - Characterization of Low Frequency Electric and Magnetic Fields Produced by Specific Source • WG2 will produce Product Family Standards. • WG3 (Baron) - Measurement and Calculation Methods for High Frequency (approx. 100 kHz to 300 GHz) Electromagnetic Fields and SAR • WG3 will produce Basic Standards. • WG4 (MacLean) - Characterization of High Frequency Electromagnetic Fields and SAR by Specific Sources • WG4 will produce Product Family Standards. • WG5 (Verholt) - Generic Application of Test Instrumentation and Measurement (Guidelines for product committees) GSC-8, OTTAWA

  10. IEC TC 106/PT 62209 Work on SAR Estimation • Measurement standard • Work started in November, 2000 in Montreal • many common members with IEEE + others • Chair M. Meier, Motorola Germany • PT 62209 Part 1 scope parallel to IEEE p1528 • IEEE SAM phantom adopted (not CENELEC) • 1st part entering CDV stage (voting) • Work begun on Part 2 in 2002 – includes accessories, body mount, handhelds, cameras, frequency extension (30MHz – 6 GHz), etc. (not part of the Part 1 draft for vote). • Part 2 is covered by the Category “D” liaison with IEEE SCC34 GSC-8, OTTAWA

  11. Harmonization – IEEE AND IEC • IEEE SCC 34 and IEC TC 106 have substantial common membership at the working group and project team level • IEC TC 106 PT 62209/IEEE p1528 harmonization has been a priority • Category “D” liaison established for new work between IEC TC 106 PT 62209 and IEEE SCC 34 • A “Category D” liaison involves organizations that can make an effective technical contribution and participate at the working group level or specific project level of the IEC technical committees or subcommittees. Obvious goals are standards harmonization, avoidance of divergence of standards, and minimizing duplication of effort. The work of IEC TC106 and IEEE Standards Coordinating Committee 34 (SCC34) is an example. GSC-8, OTTAWA

  12. Harmonization – CENELEC AND IEC • CENELEC TC 211 was renamed to TC 106x to reflect the migration of technical work related to measurements to IEC TC 106 • Transition plans from CLC to IEC in place now or in development • CLC TC106x standards all being produced in 2 parts (methods and limits) to facilitate transitions • For example, IEC PT 62209, once voted, will be parallel voted in CENELEC and will replace the prEN (for measurement, but not for limits) • Majority of other countries’ standards are derivatives or combinations of CLC, IEC, FCC Supp. C, and/or IEEE – convergence is expected GSC-8, OTTAWA

  13. Implementation/Approval Issues • RF exposure requirements have changed the game for approvals of devices • Integration - own approval ID • Intended use is key test for how to proceed • SAR (reactive near field) vs. MPE • head, hand, body, bystander • voice/data • combinations of usage/configuration • New devices/technologies • Duty cycles, accessories • Exclusions, apparent exclusions, and erring on the side of caution GSC-8, OTTAWA

  14. Implementation/Approval Issues • Devices are getting more complex and smaller • wireless phones, cordless phones, pagers etc. • Body-worn operating configurations are getting popular • wireless phones, cordless phones, 2-way radios etc Product cycle is getting much shorter - more devices • Multiple sources transmitting concurrently • Wireless modems, hand-held organizers, POS - Internet Access • Bluetooth, 802.11 a/b/g/… and other modules/”modules” - more issues – host dependence • need to implement RF exposure procedures for approving bodies to review and approve equipment requiring RF exposure evaluation GSC-8, OTTAWA

  15. Harmonization: Desired Outcome for GSC • The majority of other countries’ standards are already derivatives or combinations of IEC and/or IEEE (plus FCC, CLC) • Scientific and engineering research into measurement methodologies, particularly for new technologies, continues to be very important • IEC TC 106 and and IEEE SCC34 consist of international experts in these fields from the majority of SDO’s • Harmonization of RF safety measurement standards is highly desirable, particularly in light of the rapid development of new wireless technologies • GSC should encourage SDO’s and regulators to consistently globally harmonize their measurement methodologies for human exposure to RF GSC-8, OTTAWA

  16. For more information: • www.iec.ch • http://grouper.ieee.org/scc34/ • www.aprel.com • www.spectrum-sciences.org • Contact kathym@aprel.com GSC-8, OTTAWA

  17. Questions ? GSC-8, OTTAWA

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