RF Exposure Info

FCC ID: PPD-AR5B91

RF Exposure Info

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FCCID_1051907

Compliance Certification Services Inc. Report No.: 80911007 FCC ID: PPD-AR5B91 IC: 4104A-AR5B91 Date of Issue: December 30, 2008 APPENDIX I RADIO FREQUENCY EXPOSURE LIMIT Systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy levels in excess of the Commission's guidelines. See §15.247(i) and §1.1307(b)(1) of this chapter. According to RSS-Gen §5.5, before equipment certification is granted, the applicable requirements of RSS-102 shall be met. EUT Specification EUT 802.11n 1x2 PCIe Minicard transceiver WLAN: 2.412GHz ~ 2.462GHz WLAN: 5.18GHz ~ 5.32GHz / 5.50GHz ~ 5.70GHz Frequency band (Operating) WLAN: 5.745GHz ~ 5.825GHz Bluetooth: 2.402GHz ~ 2.480 GHz Portable (<20cm separation) Device category Mobile (>20cm separation) Occupational/Controlled exposure (S = 5mW/cm2) Exposure classification General Population/Uncontrolled exposure (S=1mW/cm2) Single antenna Multiple antennas Antenna diversity Tx diversity Rx diversity Tx/Rx diversity IEEE 802.11b mode: 22.64 dBm IEEE 802.11g mode: 24.90 dBm Max. output power IEEE 802.11n HT20 mode: 25.65 dBm IEEE 802.11n HT40 mode: 25.59 dBm Antenna gain (Max) 3.62 dBi (Numeric gain: 2.30) MPE Evaluation* Evaluation applied SAR Evaluation N/A Remark: 1. The maximum output power is 25.59 dBm (362.64mW) at 2437MHz (with 2.30 numeric antenna gain.) 2. DTS device is not subject to routine RF evaluation; MPE estimate is used to justify the compliance. 3. For mobile or fixed location transmitters, no SAR consideration applied. The maximum power density is 1.0 mW/cm2 even if the calculation indicates that the power density would be larger. TEST RESULTS No non-compliance noted. Page 210 Rev. 00

Compliance Certification Services Inc. Report No.: 80911007 FCC ID: PPD-AR5B91 IC: 4104A-AR5B91 Date of Issue: December 30, 2008 Calculation 30 × P × G E2 Given E= & S= d 3770 Where E = Field strength in Volts / meter P = Power in Watts G = Numeric antenna gain d = Distance in meters S = Power density in milliwatts / square centimeter Combining equations and re-arranging the terms to express the distance as a function of the remaining variables yields: 30 × P × G S= 3770d 2 Changing to units of mW and cm, using: P (mW) = P (W) / 1000 and d (cm) = d(m) / 100 Yields 30 × (P / 1000 ) × G P×G S= = 0.0796 × Equation 1 3770 × (d / 100 ) 2 d2 Where d = Distance in cm P = Power in mW G = Numeric antenna gain S = Power density in mW / cm2 Page 211 Rev. 00

Compliance Certification Services Inc. Report No.: 80911007 FCC ID: PPD-AR5B91 IC: 4104A-AR5B91 Date of Issue: December 30, 2008 Maximum Permissible Exposure IEEE 802.11 g mode: EUT output power = 309.02mW Numeric Antenna gain = 2.30 Substituting the MPE safe distance using d = 20 cm into Equation 1: Yields: S = 0.000199 × P × G Where P = Power in mW G = Numeric antenna gain S = Power density in mW / cm2 Æ Power density = 0.141mW / cm2 IEEE 802.11n HT20 mode: EUT output power = 367.28mW Numeric Antenna gain = 2.30 Substituting the MPE safe distance using d = 20 cm into Equation 1: Yields: S = 0.000199 × P × G Where P = Power in mW G = Numeric antenna gain S = Power density in mW / cm2 Æ Power density = 0.1681 mW / cm2 IEEE 802.11n HT40 mode: EUT output power = 362.64mW Numeric Antenna gain = 2.30 Substituting the MPE safe distance using d = 20 cm into Equation 1: Yields: S = 0.000199 × P × G Where P = Power in mW G = Numeric antenna gain S = Power density in mW / cm2 Æ Power density = 0.1659mW / cm2 (For mobile or fixed location transmitters, the maximum power density is 1.0 mW/cm2 even if the calculation indicates that the power density would be larger.) Page 212 Rev. 00


Document Created: 2008-12-31 14:34:28
Document Modified: 2008-12-31 14:34:28
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