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RF Lighting Background

Explore the history of RF lighting regulations in the 2.45 GHz ISM band, including the involvement of different parties and proposed rules. Learn about the impact on different wireless communication systems and the proposed emission limits.

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RF Lighting Background

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  1. RF Lighting Background • Apr. ‘98: FCC NPRM (ET Docket 98-42) • Rules for RF lighting in 2.45 GHz ISM Band • No limit on in-band emissions in 2.45 GHz ISM band • IEEE 802.11 submitted comments in opposition • Nov. ‘98: OET Recommendation to Commission • OET recommends adoption of proposed rules • OET felt that Part 15 community had no standing in Part 18 matter • Dec. ‘98: Part 15 direct appeal to Commission • Commission delayed approval of proposed rule • directed parties (RF Lighting / Part 15) to seek resolution • Jan. ‘99: Part 15 and RF Lighting Interests met • Part 15 proposed 20 mV/m @ 3 m limit --- immediately rejected • Part 15 provided data on impact of RF lights on ISM radios • Mar. ‘99: Part 15 Submitted Alternative Proposal Jim Zyren, Harris Semiconductor

  2. Communincations Interests Part 15 Harris Symbol 3COM Ericsson Bluetooth Promoters Metricom Part 15 Coalition IEEE 802.11 Mobile Satellite Service (MSS) AirTouch RF Lighting Interests Fusion Lighting Interested Parties Jim Zyren, Harris Semiconductor

  3. Original Proposal (January ‘99) Limit: Uniform 20 mV/m @ 3m across entire band (2400 - 2500 MHz) Corresponds to: +86 dBuV/m @ 3 m +75 dBuV/m @ 10m 20 mV/m @ 3m 2400 MHz 2500 MHz Jim Zyren, Harris Semiconductor

  4. 2478.5 - 2483.5 MHz 100 dBuV/m @ 10 m II III I 60 dBuV/m @ 3 m 2400 MHz 2483.5 MHz 2500 MHz Region I:2400 - 2478.5 MHz. RF lighting restricted to Part 15, Class A limit. Region II:2478.5 - 2483.5 MHz. RF Light emission limit of 100 dBuV/m @ 10 m (equivalent to 330 mVm @ 3m). Consistent with CISPR15 limits. Region III: 2483.5 - 2500 MHz. RF lighting restricted to Part 15, Class A limit. This portion of the band includes satellite services. Proposed RF Light PSD (2/23/99) Jim Zyren, Harris Semiconductor

  5. 2478.5 - 2483.5 MHz DSSS Ch. 11 DSSS Ch. 1 DSSS Ch. 6 2400 MHz 2483.5 MHz Impact on DSSS WLANs Jim Zyren, Harris Semiconductor

  6. 2478.5 - 2483.5 MHz Proposed RF Lighting Band Affected FHSS Channels FHSS Ch. 79 FHSS Ch. 80 FHSS Ch. 77 FHSS Ch. 78 FHSS Ch. 75 FHSS Ch. 76 Impact on FHSS WLANs Jim Zyren, Harris Semiconductor

  7. 2483.5 - 2500 MHz Band Proposed RF Lighting Band 2478.5 - 2483.5 MHz Mobile Satellite Services 2483.5 MHz 2500 MHz Impact on 2483.5 - 2500 MHz Band Jim Zyren, Harris Semiconductor

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