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Electro Magnetic Radio Exposure (EMR) Mobile users are concerned about EMR exposure

Electro Magnetic Radio Exposure (EMR) Mobile users are concerned about EMR exposure. All DAS systems and mobiles must fulfil the international standards (EN 50385 WHO/EU (ICNIRP) levels: 6min measurements (average) 4,5 W/m2 @ GSM 900 9,0 W/m2 @ GSM 1800 10 W/ m2 @ UMTS)

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Electro Magnetic Radio Exposure (EMR) Mobile users are concerned about EMR exposure

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  1. Electro Magnetic Radio Exposure (EMR)Mobile users are concerned about EMR exposure • All DAS systems and mobiles must fulfil the international standards (EN 50385 WHO/EU (ICNIRP) levels: 6min measurements (average) 4,5 W/m2 @ GSM 900 9,0 W/m2 @ GSM 180010 W/m2 @ UMTS) • Always try to minimize the exposure of the users • The main source for EMR exposure is the mobile due to proximity to the user • A Mobile will typical expose the user with 200 times the power compared with a LGC DAS antenna at 50cm distance • Mobiles on the outdoor network has to power up to react the base station • Mobiles on a traditional Coax DAS need to power up to compensate for the loss on the cables • Mobiles operating on a LGC system will use the lowest possible power -- LGC has no loss Due to the proximity of the mobile, the mobile is the main source of EMR exposure

  2. Reduce RF Exposure Of The Users With LGC Mobile using high power in an office connected to the outdoor network Mobile on low power in an office connected to an LGC in-building system 1 mW <-> 10 mW 100 mW <-----> 2.000 mW Mobile need high output power to reach the outdoor network Mobile use only low output power when connected to an LGC in-building system

  3. Reduce RF Exposure Of The Users With LGC • Traditional systems use lossy cables Decreasing the data speed Mobile has to compensate for the loss in the cables Increasing the mobile transmit power • The LGC system has no loss Better data performance Reduce the MS radiation up to factor 2000 This is the mobile transit power in an office environment with 1-50 meter distance between the mobile and the DAS antenna

  4. EMR & Indoor GSM • WHO/EU (ICNIRP) levels: • 4,5 W/m2 @ GSM 900. • 9,0 W/m2 @ GSM 1800 • . 10 W/m2 @ UMTS • Indoor EMR measurements • 1800 MHz / Indoor omni 18dBm Measurement results • ”0cm” distance (SAR to be used) • 0.630 W/m2 (@ 6 min mean) 7% EU • 4.597 W/m2 (max @ 6 min.) • 50cm distance • 0.0109 W/m2 (@ 6 min mean) 0,12% EU • 0.1567 W/m2 (max @ 6 min) • 200cm distance • 0.0067 W/m2 (@ 6 min mean) 0,07% EU • 0.0221 W/m2 (max @ 6 min)

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