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RF Exposure Info (MPE)
Qualcomm Technologies, Inc. QCNFA725 Wi-Fi 6E BT 5.2 M.2 1418 Module J9C-QCNFA725 J9CQCNFA725 qcnfa725
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Document DEVICE REPORTGetApplicationAttachment.html?id=5369376RF Exposure Report Report No.: SABWIN-WTW-P21040653 FCC ID: J9C-QCNFA725 Test Model: QCNFA725 Received Date: Apr. 20, 2021 Test Date: May 26, 2021 Issued Date: July 16, 2021 Applicant: Qualcomm Technologies, Inc. Address: 5775 Morehouse Drive, San Diego, CA 92121-1714 Issued By: Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch Hsin Chu Laboratory Lab Address: E-2, No.1, Li Hsin 1st Road, Hsinchu Science Park, Hsinchu City 300, Taiwan Test Location: E-2, No.1, Li Hsin 1st Road, Hsinchu Science Park, Hsinchu City 300, Taiwan FCC Registration / Designation Number: 723255 / TW2022 This report is for your exclusive use. Any copying or replication of this report to or for any other person or entity, or use of our name or trademark, is permitted only with our prior written permission. This report sets forth our findings solely with respect to the test samples identified herein. The results set forth in this report are not indicative or representative of the quality or characteristics of the lot from which a test sample was taken or any similar or identical product unless specifically and expressly noted. Our report includes all of the tests requested by you and the results thereof based upon the information that you provided to us. You have 60 days from date of issuance of this report to notify us of any material error or omission caused by our negligence, provided, however, that such notice shall be in writing and shall specifically address the issue you wish to raise. A failure to raise such issue within the prescribed time shall constitute your unqualified acceptance of the completeness of this report, the tests conducted and the correctness of the report contents. Unless specific mention, the uncertainty of measurement has been explicitly taken into account to declare the compliance or non-compliance to the specification. Report No.: SABWIN-WTW-P21040653 Reference No.: BWIN-WTW-P21040653 Page No. 1 / 7 Report Format Version: 6.1.1 Table of Contents Release Control Record .................................................................................................................................. 3 1 Certificate of Conformity...................................................................................................................... 4 2 RF Exposure .......................................................................................................................................... 5 2.1 Limits for Maximum Permissible Exposure (MPE) .............................................................................. 5 2.2 MPE Calculation Formula ................................................................................................................... 5 2.3 Classification ....................................................................................................................................... 5 2.4 Antenna Gain ...................................................................................................................................... 6 2.5 Calculation Result ............................................................................................................................... 7 Report No.: SABWIN-WTW-P21040653 Reference No.: BWIN-WTW-P21040653 Page No. 2 / 7 Report Format Version: 6.1.1 Release Control Record Issue No. Description SABWIN-WTW-P21040653 Original release. Date Issued July 16, 2021 Report No.: SABWIN-WTW-P21040653 Reference No.: BWIN-WTW-P21040653 Page No. 3 / 7 Report Format Version: 6.1.1 1 Certificate of Conformity Product: Wi-Fi 6E BT 5.2 M.2 1418 Module Brand: Qualcomm Test Model: QCNFA725 Sample Status: Engineering sample Applicant: Qualcomm Technologies, Inc. Test Date: May 26, 2021 Standards: FCC Part 2 (Section 2.1091) KDB 447498 D01 General RF Exposure Guidance v06 The above equipment has been tested by Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch, and found compliance with the requirement of the above standards. The test record, data evaluation & Equipment Under Test (EUT) configurations represented herein are true and accurate accounts of the measurements of the sample's EMC characteristics under the conditions specified in this report. Prepared by : Phoenix Huang / Specialist , Date: July 16, 2021 Approved by : Clark Lin / Technical Manager , Date: July 16, 2021 Report No.: SABWIN-WTW-P21040653 Reference No.: BWIN-WTW-P21040653 Page No. 4 / 7 Report Format Version: 6.1.1 2 RF Exposure 2.1 Limits for Maximum Permissible Exposure (MPE) Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm2) Limits For General Population / Uncontrolled Exposure 0.3-1.34 1.34-30 614 824/f 1.63 2.19/f (100)* (180/f2)* 30-300 27.5 0.073 0.2 300-1500 ... ... f/1500 1500-100,000 ... ... 1.0 f = Frequency in MHz ; *Plane-wave equivalent power density Average Time (minutes) 30 30 30 30 30 2.2 MPE Calculation Formula Pd = (Pout*G) / (4*pi*r2) where Pd = power density in mW/cm2 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 2.3 Classification The antenna of this product, under normal use condition, is at least 20 cm away from the body of the user. So, this device is classified as Mobile Device. Report No.: SABWIN-WTW-P21040653 Reference No.: BWIN-WTW-P21040653 Page No. 5 / 7 Report Format Version: 6.1.1 2.4 Antenna Gain Antenna RF Chain Brand Set No. Model Antenna Net Gain (dBi) Frequency Range Cable Antenna Loss (dB) Type Connector Type Cable Length 3.53 2.4~2.4835 GHz 0.76 3.06 5.15~5.25 GHz 1.16 1 Chain0/1 HONGBO 260-25094 3.07 5.25~5.35 GHz 1.18 PIFA i-pex(MHF 4L) 300mm 4.81 5.47~5.725 GHz 1.2 4.2 5.725~5.850 GHz 1.27 5.09 5.850~5.895 GHz 1.29 5.14 5.925~6.425 GHz 1.32 2 Chain0/1 HONGBO 260-25083 5.09 6.425~6.525 GHz 1.35 PIFA i-pex(MHF 4L) 300mm 5.16 6.525~6.875 GHz 1.4 5.12 6.875~7.125 GHz 1.45 3.22 2.4~2.4835 GHz 0.5 3.35 5.150~5.250 GHz 0.76 3.42 5.250~5.350 GHz 0.78 4.77 5.470~5.725 GHz 0.81 4.72 5.725~5.850 GHz 0.85 3 Chain0/1 HONGBO 260-25084 Monopole i-pex(MHF 4L) 200mm 4.71 5.850~5.895 GHz 0.86 4.75 5.925~6.425 GHz 0.87 4.29 6.425~6.525 GHz 0.91 4.81 6.525~6.875 GHz 0.96 4.74 6.875~7.125 GHz 0.98 Note: The above Antenna information is declared by manufacturer and for more detailed features description, please refer to the manufacturer's specifications, the laboratory shall not be held responsible. Report No.: SABWIN-WTW-P21040653 Reference No.: BWIN-WTW-P21040653 Page No. 6 / 7 Report Format Version: 6.1.1 2.5 Calculation Result Operation Mode Max. Power (dBm) WLAN (2.4GHz) 22.50 Max. Power Antenna Gain (mW) (dBi) 177.828 6.54 Distance (cm) 20 Power Density (mW/cm2) 0.15949 Limit (mW/cm2) 1 WLAN (5GHz) 22.00 158.489 7.82 20 0.19087 1 WLAN (6GHz) 19.00 79.433 8.17 20 0.10369 1 Bluetooth 16.00 39.811 3.53 20 0.01785 1 Note: 1. Determining compliance based on the results of the compliance measurement, not taking into account measurement instrumentation uncertainty. 2. 2.4GHz: Directional gain = 3.53dBi + 10log(2) = 6.54dBi 5GHz: U-NII-1: Directional gain = 3.35dBi + 10log(2) = 6.36dBi U-NII-2A: Directional gain = 3.42dBi + 10log(2) = 6.43dBi U-NII-2C: Directional gain = 4.81dBi + 10log(2) = 7.82dBi U-NII-3: Directional gain = 4.72dBi + 10log(2) = 7.73dBi 6GHz: U-NII-5: Directional gain = 5.14dBi + 10log(2) = 8.15dBi U-NII-6: Directional gain = 5.09dBi + 10log(2) = 8.10dBi U-NII-7: Directional gain = 5.16dBi + 10log(2) = 8.17dBi U-NII-8: Directional gain = 5.12dBi + 10log(2) = 8.13dBi 3. This power include tune-up tolerance range that specified in QCNFA725 Tune Up power table. 4. WLAN (2.4GHz) and Bluetooth, BT-LE and BT-EDR are cann't transmit simultaneously. Conclusion: The formula of calculated the MPE is: CPD1 / LPD1 + CPD2 / LPD2 + ......etc. < 1 CPD = Calculation power density LPD = Limit of power density Simultaneously transmission condition. Condition 1 WLAN(2.4GHz) 2 WLAN(2.4GHz) 3 WLAN(6GHz) 4 WLAN(5GHz) Technology WLAN(6GHz) WLAN(5GHz) Bluetooth Bluetooth WLAN 2.4GHz + WLAN 6GHz = 0.15949 / 1 + 0.10369 / 1 = 0.26318 WLAN 2.4GHz + WLAN 5GHz = 0.15949 / 1 + 0.19087 / 1 = 0.35036 WLAN 6GHz + Bluetooth = 0.10369 / 1 + 0.01785 / 1 = 0.12154 WLAN 5GHz + Bluetooth = 0.19087 / 1 + 0.01785 / 1 = 0.20872 Therefore the maximum calculations of above situations are less than the "1" limit. --- END --- Report No.: SABWIN-WTW-P21040653 Reference No.: BWIN-WTW-P21040653 Page No. 7 / 7 Report Format Version: 6.1.1
Related FCC IDs:
- J9C-QCNFA725 - Qualcomm Technologies, Inc. Wi-Fi 6E BT 5.2 M.2 1418 Module [-QCNFA725] Microsoft Word 2013 Microsoft Word 2013