MPE Test Report

FCC ID: RTP-MRLBB1003S

Test Report

Download: PDF
FCCID_1386692

RF EXPOSURE REPORT REPORT NO.: $A990622CO09 MODEL NO.: MRLBB—1003 FCC ID: RTP—MRLBB1003 ACCORDING: FCC Guidelines for Human Exposure IEEE C95.1 APPLICANT: Wistron NeWeb Corp. ADDRESS: 20 Park Avenue II, Hsinchu Science Park,Hsinchu 308, Taiwan, R.O.C. ISSUED BY: Bureau Veritas Consumer Products Services (H.K.) Ltd., Tacyuan Branch Hsin Chu Laboratory LAB ADDRESS: No. 81—1, Lu Liao Keng, 9th Ling,Wu Lung Tsuen, Chiung Lin Hsiang, Hsin Chu Hsien 307, Taiwan Report No.: $A9906220C09 1 Report Format Version 3.0.1

RF Exposure Measurement 1. Introduction In this document, we try to prove the safety of radiation harmfulness to the human body for our product. The limit for Maximum Permissible Exposure (MPE) specified in FCC 1.1310 is followed. The Gain of the antenna used in this product is measured in a Fully Anechoic Chamber (FAC) calibrated for antenna measurement in our lab, and also the maximum total power input to the antenna is measured. Through the Friis transmission formula and the maximum gain of the antenna, we can calculate the distance, away from the product, where the limit of MPE is reached. Although the Friis transmission formula is a far field assumption, the calculated result of that is an over—prediction for near field power density. We will take that as the worst case to specify the safety range. 2. RF Exposure Limit According to FCC 1.1310:; The criteria listed in the following table shall be used to evaluate the environmental impact of human exposure to radio—frequency (RF) radiation as specified in 1.1307(b) LIMITS FOR MAXIMUM PERMISSIBLE EXPOSURE (MPE) Frequency Electric Field Magnetic Field Power Density Average Time Range Strength (V/m) Strength (A/m) (mW/icm?*) {minutes) (MHz) (A)Limits For Occupational / Control Exposures 300—1500 22. F300 6 1500—100,000 5 6 (B)Limits For General Population / Uncontrolled Exposure 300—1500 F/1500 30 1500—100,000 1.0 30 F = Frequency in MHz Report No.: $A9906220C09 2 Report Format Version 3.0.1

3. Friis Formula Friig transmission formula : Pd = (Pout*G) / (4*pi*r") where Pd = power density in mW/cm* Pout = output power to antenna in mW G = gain of antenna in linear scale Pi=3.1416 R = distance between observation point and center of the radiator in cm Pd is the limit of MPE, 1 mW/cm*. If we know the maximum Gain of the antenna and the total power input to the antenna, through the calculation, we will know the MPE value at distance 70cm. Ref. : David K. Cheng, Field and Wave Electromagnetics, Second Edition, Page 640, Eq. (11—133). 4. EUT Operating condition The software provided by Manufacturer enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. 5. Classification The antenna of this product, under normal use condition, is at least 70cm away from the body of the user. So, this device is classified as Mobile Device. Report No.: $A9906220C09 3 Report Format Version 3.0.1

6. TEST RESULTS 6.1 Antenna Gain There are five antennas provided to this EUT, please refer to the following table: Antenna Gain (dBi) . No. fir:nr:g Model name (include cable loss) Ar_:_tenna Connector PO"Tt o For 2.4GHz| For 5GHz |__‘YP® point 1 WNC 5184—6684 5.41 7.02 PIFA U.FL — 2 Laird J9169A 8.00 10.70 Directional Reverse SMA Yes 3 Laird J9170A 10.90 13.50 Directional Reverse SMA Yes 4 Laird J9171A 3.00 4.00 Omni Reverse SMA Yes 5 Laird J9659 2.00 2.00 Omni Reverse SMA Yes Note: 1. From the above antennas, Antenna 1, 3 and 4 were selected as representative antennas for the test and their data were recorded in this report. 2. Antenna 3 only use in 2.4GHz and 5GHz(band 2—4) Report No.: $A9906220C09 4 Report Format Version 3.0.1

6.2 Output Power Into Antenna & RF Exposure value at distance 20cm: For 15.247(2.4GHz) — PIFA Antenna: 802.11b: Channel — Limit of Output Power to Power Density . Channel Frequency 7 Power Density (MH2z) Antenna (mW) (mW/cm"*) (mWicm?) 1 2412 75.5 0.013 1.0 6 2437 96.4 0.016 1.0 1 2462 75.0 0.013 1.0 802.11g: Channel R Limit of Output Power to Power Density . Channel Frequency 2 Power Density (MHz) Antenna {mW) (mW/cm") (mWicm?) 1 2412 307.7 0.052 1.0 6 2437 375.1 0.064 1.0 11 2462 273.8 0.046 1.0 802.11n (20MHz): Channel . Limit of Output Power to Power Density . Channel Frequency 2 Power Density (MHz) Antenna ({mW) (mW/cm") (mWicm?) 1 2412 309.1 0.017 1.0 6 2437 533.3 0.030 1.0 11 2462 246.3 0.014 1.0 802.11n (40MHz): Channel : Limit of Output Power to Power Density . Channel Frequency 2 Power Density (MH2z) Antenna (mW) (mW/cm"*) (mWicimz) 1 2422 178.2 0.010 1.0 4 2437 370.4 0.021 1.0 7 2452 118.2 0.007 1.0 Report No.: $A9906220C09 Report Format Version 3.0.1

For 15.247(2.4GHz) — Directional Antenna: 802.11b: Channel . Limit of Output Power to Power Density . Channel Frequency 2 Power Density (MH2z) Antenna (mW) (mW/cm*) (mWicm?) 1 2412 75.5 0.045 1.0 6 2437 96.4 0.058 1.0 11 2462 75.0 0.045 1.0 802.11g: Channel — Limit of Output Power to Power Density . Channel Frequency 2 Power Density (MH2z) Antenna {mW) (mW/cm") (mWicm?) 1 2412 307.7 0.184 1.0 6 2437 375.1 0.225 1.0 11 2462 273.8 0.164 1.0 802.11n (20MHz): Channel — Limit of Output Power to Power Density . Channel Frequency 2 Power Density (MH2z) Antenna ({mW) (mW/cm"*) (mWiem?) 1 2412 309.1 0.062 1.0 6 2437 533.3 0.107 1.0 11 2462 246.3 0.049 1.0 802.11n (40MHz): Channel . Limit of Output Power to Power Density . Channel Frequency 2 Power Density (MH2z) Antenna (mW) (mW/cm"*) (mWicimz) 1 2422 178.2 0.036 1.0 4 2437 370.4 0.074 1.0 7 2452 118.2 0.024 1.0 Report No.: $A9906220C09 Report Format Version 3.0.1

For 15.247(2.4GHz) — Omni Antenna: 802.11b: Channel : Limit of Output Power to Power Density . Channel Frequency 2 Power Density (MH2z) Antenna (mW) (mW/cm"*) (mWicm?) 1 2412 75.5 0.007 1.0 6 2437 96.4 0.009 1.0 11 2462 75.0 0.007 1.0 802.11g: Channel — Limit of Output Power to Power Density . Channel Frequency 2 Power Density (MH2z) Antenna ({mW) (mW/cm") (mWicm?) 1 2412 307.7 0.030 1.0 6 2437 375.1 0.036 1.0 11 2462 273.8 0.027 1.0 802.11n (20MHz): Channel — Limit of Output Power to Power Density . Channel Frequency Antenna (mW) (mWw,Icmz) Power Denzsny (MHz) {mW/cm") 1 2412 309.1 0.010 1.0 6 2437 533.3 0.017 1.0 1 2462 246.3 0.008 1.0 802.11n (40MHz): Channel R Limit of OQutput Power to Power Density . Channel Frequency 2 Power Density (MHz) Antenna (mW) (mW/cm"*) (mWiem?) 1 2422 178.2 0.006 1.0 2437 370.4 0.012 1.0 7 2452 118.2 0.004 1.0 Report No.: $A9906220C09 Report Format Version 3.0.1

For 15.247(5GHz) — PIFA Antenna: 802.11a: Channel . Limit of Output Power to Power Density . Channel Frequency 2 Power Density (MH2z) Antenna (mW) (mW/cm*) (mWicm?) 149 5745 257.6 0.063 1.0 157 5785 244.4 0.060 1.0 165 5825 213.3 0.052 1.0 802.11n (20MHz): Channel — Limit of Output Power to Power Density . Channel Frequency 2 Power Density (MH2z) Antenna {mW) (mW/cm") (mWicm?) 149 5745 255.7 0.021 1.0 157 5785 177.3 0.014 1.0 165 5825 222.0 0.018 1.0 802.11n (40MHz): Channel — Limit of Output Power to Power Density . Channel Frequency 2 Power Density (MH2z) Antenna ({mW) (mW/cm"*) (mWiem?) 151 5755 257.4 0.021 1.0 159 5795 204.6 0.017 1.0 Report No.: $A9906220C09 Report Format Version 3.0.1

For 15.247(5GHz) — Directional Antenna: 802.11a: Channel : Limit of Output Power to Power Density . Channel Frequency 2 Power Density (MH2z) Antenna (mW) (mW/cm"*) (mWicm?) 149 5745 257.6 0.281 1.0 157 5785 244.4 0.267 1.0 165 5825 213.3 0.233 1.0 802.11n (20MHz): Channel — Limit of Output Power to Power Density . Channel Frequency 2 Power Density (MH2z) Antenna ({mW) (mW/cm") (mWicm?) 149 5745 255.7 0.093 1.0 157 5785 177.3 0.064 1.0 165 5825 222.0 0.081 1.0 802.11n (40MHz): Channel — Limit of Output Power to Power Density . Channel Frequency Antenna (mW) (mWw,Icmz) Power Denzsny (MHz) {mW/cm") 151 5755 257.4 0.094 1.0 159 5795 204.6 0.074 1.0 Report No.: $A9906220C09 Report Format Version 3.0.1

For 15.247(5GHz) — Omni Antenna: 802.11a: Channel : Limit of Output Power to Power Density . Channel Frequency 2 Power Density (MH2z) Antenna (mW) (mW/cm"*) (mWicm?) 149 5745 257.6 0.032 1.0 157 5785 244.4 0.030 1.0 165 5825 213.3 0.026 1.0 802.11n (20MHz): Channel — Limit of Output Power to Power Density . Channel Frequency 2 Power Density (MH2z) Antenna ({mW) (mW/cm") (mWicm?) 149 5745 255.7 0.010 1.0 157 5785 177.3 0.007 1.0 165 5825 222.0 0.009 1.0 802.11n (40MHz): Channel — Limit of Output Power to Power Density . Channel Frequency Antenna (mW) (mWw,Icmz) Power Denzsny (MHz) {mW/cm") 151 5755 257.4 0.011 1.0 159 5795 204.6 0.008 1.0 Report No.: $A9906220C09 10 Report Format Version 3.0.1

For 15.407(5GHz) — PIFA Antenna: 802.11a: Channel . Limit of OQutput Power to Power Density . Channel Frequency 2 Power Density (MHz) Antenna (mW) (mW/cm"*) (mWw.Icmz) 36 5180 6.8 0.002 1.0 40 5200 7.0 0.002 1.0 48 5240 7.0 0.002 1.0 52 5260 7.8 0.002 1.0 60 5300 7.8 0.002 1.0 64 5320 7.6 0.002 1.0 100 5500 7.9 0.002 1.0 116 5580 7.8 0.002 1.0 132 5660 7.5 0.002 1.0 140 5700 8.5 0.002 1.0 802.11n (20MHz): Channel : Limit of Channel Frequency ?At:ffet::nl?(vvn?vrvt)o Pcz:vn%zfiglty Power Denzsity (MHz) {mW/cm") 36 5180 20.9 0.002 1.0 40 5200 22.1 0.002 1.0 48 5240 20.9 0.002 1.0 52 5260 23.8 0.002 1.0 60 5300 23.9 0.002 1.0 64 5320 23.1 0.002 1.0 100 5500 22.6 0.002 1.0 16 5580 24.0 0.002 1.0 132 5660 25.8 0.002 1.0 140 5700 17.2 0.001 1.0 802.11n (40MHz): Channel M Limit of Output Power to Power Density . Channel Frequency 2 Power Density (MH2z) Antenna (mW) (mW/cm"*) (mWicm?) 38 5190 35.3 0.003 1.0 46 5230 34.7 0.003 1.0 54 5270 43.4 0.004 1.0 62 5310 25.9 0.002 1.0 102 5510 10.7 0.001 1.0 110 5550 43.0 0.004 1.0 134 5670 18.7 0.002 1.0 Report No.: $A9906220C09 11 Report Format Version 3.0.1

For 15.407(5GHz) — Directional Antenna: 802.11a: Channel . Limit of Output Power to Power Density . Channel Frequency 2 Power Density (MH2z) Antenna (mW) (mW/cm"*) (mWicm?) 52 5260 7.8 0.009 1.0 60 5300 7.8 0.009 1.0 64 5320 7.6 0.008 1.0 100 5500 7.9 0.009 1.0 16 5580 7.8 0.009 1.0 132 5660 7.5 0.008 1.0 140 5700 8.5 0.009 1.0 802.11n (20MHz): Channel R Limit of Output Power to Power Density . Channel Frequency 2 Power Density (MHz) Antenna ({mW) (mW/cm"*) (mWiem?) 52 5260 23.86 0.009 1.0 60 5300 23.9 0.009 1.0 64 5320 23.1 0.008 1.0 100 5500 22.6 0.008 1.0 116 5580 24.0 0.009 1.0 132 5660 25.8 0.009 1.0 140 5700 17.2 0.006 1.0 802.11n (40MHz): Channel R Limit of Output Power to Power Density . Channel Frequency 2 Power Density (MH2z) Antenna {mW) (mW/cm") (mWicmz) 54 5270 43.4 0.016 1.0 62 5310 25.9 0.009 1.0 102 5510 10.7 0.004 1.0 110 5550 43.0 0.016 1.0 134 5670 18.7 0.007 1.0 Report No.: $A9906220C09 12 Report Format Version 3.0.1

For 15.407(5GHz) — Omni Antenna: 802.11a: Channel . Limit of Output Power to Power Density . Channel Frequency 2 Power Density (MHz) Antenna (mW) (mW/cm"*) (mWw.Icmz) 36 5180 6.8 0.001 1.0 40 5200 7.0 0.001 1.0 48 5240 7.0 0.001 1.0 52 5260 7.8 0.001 1.0 60 5300 7.8 0.001 1.0 64 5320 7.6 0.001 1.0 100 5500 7.9 0.001 1.0 116 5580 7.8 0.001 1.0 132 5660 7.5 0.001 1.0 140 5700 8.5 0.001 1.0 802.11n (20MHz): Channel : Limit of Channel Frequency ?Al::fel::nzo(v:\;vt)o Pczvr:‘%z;glty Power Denzsity (MHz) {mW/cm") 36 5180 20.9 0.001 1.0 40 5200 22.1 0.001 1.0 48 5240 20.9 0.001 1.0 52 5260 23.8 0.001 1.0 60 5300 23.9 0.001 1.0 64 5320 23.1 0.001 1.0 100 5500 22.6 0.001 1.0 16 5580 24.0 0.001 1.0 132 5660 25.8 0.001 1.0 140 5700 17.2 0.001 1.0 802.11n (40MHz): Channel . Limit of Output Power to Power Density . Channel Frequency 2 Power Density (MH2z) Antenna (mW) (mW/cm"*) (mWiem?) 38 5190 35.3 0.001 1.0 46 5230 34.7 0.001 1.0 54 5270 43.4 0.002 1.0 62 5310 25.9 0.001 1.0 102 5510 10.7 0.000 1.0 110 5550 43.0 0.002 1.0 134 5670 18.7 0.001 1.0 Report No.: $A9906220C09 13 Report Format Version 3.0.1

CONCLUSION: Both of the 2.4GHz and 5GHz can transmit simultaneously, the formula of calculated the MPE is: CPD, / LPD; + CPD2 / LPD2 + ......etc. < 1 CPD = Calculation power density LPD = Limit of power density Therefore, the worst—case situation is 0.225 / 1 + 0.281 / 1= 0.506, which is less than "1". This confirmed that the device comply with FCC 1.1310 MPE limit. ——— END ——— Report No.: $A9906220C09 14 Report Format Version 3.0.1


Document Created: 2010-10-29 09:34:53
Document Modified: 2010-10-29 09:34:53
© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC