A4RG020MN_TestRpt_PD Report_0828

FCC ID: A4RG020MN

RF Exposure Info

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FCCID_4417766

RF EXPOSURE EVALUATION REPORT Report No. : FA8N0616-06C RF EXPOSURE EVALUATION REPORT FCC ID : A4RG020MN Equipment : Phone Model Name : G020M, G020N Applicant : Google LLC 1600 Amphitheatre Parkway, Mountain View, California, 94043 USA Manufacturer : Google LLC 1600 Amphitheatre Parkway, Mountain View, California, 94043 USA Standard : FCC 47 CFR Part 2 (2.1093) We, SPORTON INTERNATIONAL INC have been evaluated this device in accordance with 47 CFR Part 2.1093 and it complies with applicable limit. The test results in this report apply exclusively to the tested model / sample. Without written approval of SPORTON INTERNATIONAL INC. EMC & Wireless Communications Laboratory, the test report shall not be reproduced except in full. Approved by: Cona Huang / Deputy Manager SPORTON INTERNATIONAL INC. EMC & Wireless Communications Laboratory No. 52, Huaya 1st Rd., Guishan Dist., Taoyuan City, Taiwan (R.O.C.) TEL : 886-3-327-3456 Page 1 of 15 FAX : 886-3-328-4978 Issued Date : Aug. 28, 2019 Form version: 180516

RF EXPOSURE EVALUATION REPORT Report No. : FA8N0616-06C Table of Contents 1. Summary ........................................................................................................................................................................ 4 2. Guidance Applied .......................................................................................................................................................... 4 3. Equipment Under Test (EUT) Information ................................................................................................................... 5 3.1 General Information ............................................................................................................................................... 5 4. RF Exposure Limits....................................................................................................................................................... 6 4.1 Uncontrolled Environment ...................................................................................................................................... 6 4.2 Controlled Environment.......................................................................................................................................... 6 5. System Description and Setup .................................................................................................................................... 7 5.1 EUmmWave Probe / E-Field 5G Probe .................................................................................................................. 8 5.2 Data Acquisition Electronics (DAE) ........................................................................................................................ 9 5.3 Scan configuration ................................................................................................................................................. 9 6. Test Equipment List ...................................................................................................................................................... 9 7. System Verification Source .........................................................................................................................................10 8. Power Density System Verification ............................................................................................................................11 9. System Verification Results ........................................................................................................................................11 9.1 Computation of the Electric Field Polarization Ellipse ...........................................................................................12 9.2 Total Field and Power Flux Density Reconstruction ..............................................................................................12 9.3 Test Positions ........................................................................................................................................................13 10. RF Exposure Evaluation Results ..............................................................................................................................13 11. Uncertainty Assessment ...........................................................................................................................................14 12. References ..................................................................................................................................................................15 Appendix A. Plots of System Performance Check Appendix B. Plots of Power Density Measurement Appendix C. DASY Calibration Certificate Appendix D. Sim-Tx Analysis Appendix D. Setup Photo TEL : 886-3-327-3456 Page 2 of 15 FAX : 886-3-328-4978 Issued Date : Aug. 28, 2019 Form version: 180516

RF EXPOSURE EVALUATION REPORT Report No. : FA8N0616-06C History of this test report Report No. Version Description Issued Date FA8N0616-06C 01 Initial issue of report Jul. 10, 2019 FA8N0616-06C 02 Update section 1 Aug. 28, 2019 TEL : 886-3-327-3456 Page 3 of 15 FAX : 886-3-328-4978 Issued Date : Aug. 28, 2019 Form version: 180516

seortrow cas. _RF EXPOSURE EVALUATION REPORT Report No. : FABNO616—06C 1. Summary The maximum measured average power density found during testing for Google LLC, Phone, are as follows. en ndalone transmission Simultaneous transmission h with Standalone transmissio other transmitters Highest Total Power Density, Limit (FCC part 1.310) i B RF avera(gmlql%/gvmezr) 4cm (mW/cm) Summation of Exposure Ratio 60GHz Transmitter 0.00704 2. Guidance Applied The Power Density testing specification, method, and procedure for this device is in accordance with the following standards: FCC 47 CFR Part 2.1091 FCC 47 CFR Part 2.1093 FCC KDB 865664 D02 SAR Reporting v01r02 FCC KDB 447498 DO1 General RF Exposure Guidance v06 FCC KDB 648474 D04 SAR Evaluation Considerations for Wireless Handsets v01r08 TCBC workshop notes IEC Draft TR 63170 TEL : 886—3—327—3456 Page 4 of 15 FAX : 886—3—328—4978 Issued Date : Aug. 28, 2019 Form version: 180516

RF EXPOSURE EVALUATION REPORT Report No. : FA8N0616-06C 3. Equipment Under Test (EUT) Information 3.1 General Information Product Feature & Specification Equipment Name Phone Model Name G020M, G020N FCC ID A4RG020MN GSM850: 824.2 MHz ~ 848.8 MHz GSM1900: 1850.2 MHz ~ 1909.8 MHz WCDMA Band II: 1852.4 MHz ~ 1907.6 MHz WCDMA Band IV: 1712.4 MHz ~ 1752.6 MHz WCDMA Band V: 826.4 MHz ~ 846.6 MHz LTE Band 2: 1850.7 MHz ~ 1909.3 MHz LTE Band 4: 1710.7 MHz ~ 1754.3 MHz LTE Band 5: 824.7 MHz ~ 848.3 MHz LTE Band 7: 2502.5 MHz ~ 2567.5 MHz LTE Band 12: 699.7 MHz ~ 715.3 MHz LTE Band 13: 779.5 MHz ~ 784.5 MHz LTE Band 17: 706.5 MHz ~ 713.5 MHz Wireless Technology and LTE Band 25: 1850.7 MHz ~ 1914.3 MHz Frequency Range LTE Band 26: 814.7 MHz ~ 848.3 MHz LTE Band 38: 2572.5 MHz ~ 2617.5 MHz LTE Band 41: 2498.5 MHz ~ 2687.5 MHz LTE Band 66: 1710.7 MHz ~ 1779.3 MHz LTE Band 71: 665.5 MHz ~ 695.5 MHz WLAN 2.4GHz Band: 2412 MHz ~ 2472 MHz WLAN 5.2GHz Band: 5180 MHz ~ 5240 MHz WLAN 5.3GHz Band: 5260 MHz ~ 5320 MHz WLAN 5.5GHz Band: 5500 MHz ~ 5720 MHz WLAN 5.8GHz Band: 5745 MHz ~ 5825 MHz Bluetooth: 2402 MHz ~ 2480 MHz NFC : 13.56 MHz 60 GHz Low Power Transmitter: 60GHz:58-63.5GHz GSM/GPRS/EGPRS RMC/AMR 12.2Kbps HSDPA HSUPA Mode DC-HSDPA LTE: QPSK, 16QAM, 64QAM WLAN: 802.11a/b/g/n/ac HT20 / HT40 / VHT20 / VHT40 / VHT80 Bluetooth BR/EDR/LE NFC:ASK GSM / (E)GPRS Dual Transfer Class B – EUT cannot support Packet Switched and Circuit Switched Network simultaneously but can mode automatically switch between Packet and Circuit Switched Network. EUT Stage Identical Prototype Reviewed by: Jason Wang Report Producer: Wan Liu TEL : 886-3-327-3456 Page 5 of 15 FAX : 886-3-328-4978 Issued Date : Aug. 28, 2019 Form version: 180516

RF EXPOSURE EVALUATION REPORT Report No. : FA8N0616-06C 4. RF Exposure Limits 4.1 Uncontrolled Environment Uncontrolled Environments are defined as locations where there is the exposure of individuals who have no knowledge or control of their exposure. The general population/uncontrolled exposure limits are applicable to situations in which the general public may be exposed or in which persons who are exposed as a consequence of their employment may not be made fully aware of the potential for exposure or cannot exercise control over their exposure. Members of the general public would come under this category when exposure is not employment-related; for example, in the case of a wireless transmitter that exposes persons in its vicinity. 4.2 Controlled Environment Controlled Environments are defined as locations where there is exposure that may be incurred by persons who are aware of the potential for exposure, (i.e. as a result of employment or occupation). In general, occupational/controlled exposure limits are applicable to situations in which persons are exposed as a consequence of their employment, who have been made fully aware of the potential for exposure and can exercise control over their exposure. The exposure category is also applicable when the exposure is of a transient nature due to incidental passage through a location where the exposure levels may be higher than the general population/uncontrolled limits, but the exposed person is fully aware of the potential for exposure and can exercise control over his or her exposure by leaving the area or by some other appropriate means. The criteria listed in Table 1 shall be used to evaluate the environmental impact of human exposure above 6GHz to radio frequency (RF) radiation as specified in §1.1310. 2 General Population Basic restriction for power density for frequencies between 1.5GHz and 100 GHz is 1.0 mW/cm = 10 2 W/m Table 1 TEL : 886-3-327-3456 Page 6 of 15 FAX : 886-3-328-4978 Issued Date : Aug. 28, 2019 Form version: 180516

RF EXPOSURE EVALUATION REPORT Report No. : FA8N0616-06C 5. System Description and Setup The system to be used for the near field power density measurement  SPEAG DASY6 system  SPEAG cDASY6 5G module software  EUmmWVx probe  5G Phantom cover TEL : 886-3-327-3456 Page 7 of 15 FAX : 886-3-328-4978 Issued Date : Aug. 28, 2019 Form version: 180516

RF EXPOSURE EVALUATION REPORT Report No. : FA8N0616-06C 5.1 EUmmWave Probe / E-Field 5G Probe The probe design allows measurements at distances as small as 2 mm from the sensors to the surface of the device under test (DUT). The typical sensor to probe tip distance is 1.5 mm. Frequency 750 MHz – 110 GHz Probe Overall Length 320 mm Probe Body Diameter 8.0 mm Tip Length 23.0 mm Tip Diameter 8.0 mm Probe’s two dipoles length 0.9 mm – Diode loaded Dynamic Range < 20 V/m - 10000 V/m with PRE-10 (min < 50 V/m - 3000 V/m) Position Precision < 0.2 mm Distance between diode sensors and 1.5 mm probe’s tip Minimum Mechanical separation 0.5 mm between probe tip and a Surface E-field measurements of 5G devices and other mm-wave transmitters Applications operating above 10GHz in < 2 mm distance from device (free-space) Power density, H-field and far-field analysis using total field reconstruction. Compatibility cDASY6 + 5G-Module SW1.0 and higher TEL : 886-3-327-3456 Page 8 of 15 FAX : 886-3-328-4978 Issued Date : Aug. 28, 2019 Form version: 180516

seonron cas. _RF EXPOSURE EVALUATION REPORT Report No. : FASNO616—06C 5.2 Data Acquisition Electronics (DAE) The data acquisition electronics (DAE) consists of a highly sensitive electrometer—grade preamplifier with auto—zeroing, a channel and gain—switching multiplexer, a fast 16 bit AD—converter and a command decoder and control logic unit. Transmission to the measurement server is accomplished through an optical downlink for data and status information as well as an optical uplink for commands and the clock. The input impedance of the DAE is 200 MOhm; the inputs are symmetrical and floating. Common mode rejection is above 80 dB. 5.3 Scan configuration Fine—resolution scans on 2 different planes are performed to reconstruct the E— and H—fields as well as the power density; the z—distance between the 2 planes is setto ¥ /4. The (x, y) grid step is also set 2 /4, the grid extent is set to sufficiently large to identify the field pattern and the peak. 6. Test Equipment List ® ® SPEAG 5G Verification Source 60 GHz 1009 Apr. 24, 2019 Apr. 23, 2020 SPEAG EUmmWV Probe Tip Protection EUmmWV3 9441 Jun. 12, 2019 Jun. 11, 2020 SPEAG Data Acquisition Electronics DAE4 1399 Nov. 16, 2018 Nov. 15, 2019 RCPTWN Thermometer HTC—1 TMS60—2 Nov. 12, 2018 Nov. 11, 2019 Rohde & Schwarz Spectrum Analyzer FSV40 101408 Jul. 30, 2018 Jul. 29, 2019 Custom Microwave Standard Hom antenna M15RH V91113—A NCR NCR TEL : 886—3—327—3456 Page 9 of 15 FAX : 886—3—328—4978 Issued Date ; Aug. 28, 2019 Form version: 180516

seortrow cas. _RF EXPOSURE EVALUATION REPORT Report No. : FABNO616—06C 7. System Verification Source The System Verification sources at 30 GHz and above comprise horn—antennas and very stable signal generators. PCAS Ka—band horn antenna Calibrated frequency: 30 GHz at 10mm from the case surface Frequency accuracy + 100 MHz E—field polarization linear Harmonics —20 dBc Total radiated power 14 dBm Power stability 0.05 dB Power consumption 5W Size 00 x 100 x 100 mm Weight 1 kg TEL : 886—3—327—3456 Page 10 of 15 FAX : 886—3—328—4978 Issued Date : Aug. 28, 2019 Form version: 180516

RF EXPOSURE EVALUATION REPORT Report No. : FA8N0616-06C 8. Power Density System Verification The system performance check verifies that the system operates within its specifications. The EUT is replaced by a calibrated source, the same spatial resolution, measurement region and the test separation used in the calibration was applied to system check. Through visual inspection into the measured power density distribution, both spatially (shape) and numerically (level) have no noticeable difference. The measured results should be within 10% of the calibrated targets. Settings for measurement of verification sources Verification Setup photo 9. System Verification Results 5G Measured Targeted Frequency Probe DAE Distance Deviation Date Verification 4 cm² 4 cm² (GHz) S/N S/N (mm) (%) Source (W/m²) (W/m²) 2019/7/5 60 60GHz_1009 9441 1399 10 256 247 3.64% TEL : 886-3-327-3456 Page 11 of 15 FAX : 886-3-328-4978 Issued Date : Aug. 28, 2019 Form version: 180516

RF EXPOSURE EVALUATION REPORT Report No. : FA8N0616-06C 9.1 Computation of the Electric Field Polarization Ellipse For the numerical description of an arbitrarily oriented ellipse in three-dimensional space, five parameters are needed: the semi-major axis (a), the semi-minor axis (b), two angles describing the orientation of the normal vector of the ellipse (∅, θ), and one angle describing the tilt of the semi-major axis (ψ). For the two extreme cases, i.e., circular and linear polarizations, three parameters only (a, ∅ and θ) are sufficient for the description of the incident field. Illustration of the angles used for the numerical description of the sensor and the orientation of an ellipse in 3-D space. For the reconstruction of the ellipse parameters from measured data, the problem can be reformulated as a nonlinear search problem. The semi-major and semi-minor axes of an elliptical field can be expressed as functions of the three angles (∅, θ and ψ). The parameters can be uniquely determined towards minimizing the error based on least-squares for the given set of angles and the measured data. In this way, the number of free parameters is reduced from five to three, which means that at least three sensor readings are necessary to gain sufficient information for the reconstruction of the ellipse parameters. However, to suppress the noise and increase the reconstruction accuracy, it is desirable that the system of equations be over determined. The solution to use a probe consisting of two sensors angled by r1 and r2 toward the probe axis and to perform measurements at three angular positions of the probe, i.e., at β1, β2 and β3, results in over-determinations by a factor of two. If there is a need for more information or increased accuracy, more rotation angles can be added. The reconstruction of the ellipse parameters can be separated into linear and non-linear parts that are best solved by the Givens algorithm combined with a downhill simplex algorithm. To minimize the mutual coupling, sensor angles are set with a shift of 90 degree (r2 = r1 + 90 degree), and to simplify, the first rotation angle of the probe (β1) can be set to 0 degree 9.2 Total Field and Power Flux Density Reconstruction Computation of the power density in general requires knowledge of the electric and magnetic field amplitudes and phases in the plane of incidence. Reconstruction of these quantities from pseudo-vector E-field measurements is feasible, as they are constrained by Maxwell's equations. SPEAG have developed a reconstruction approach based on the Gerchberg-Saxton algorithm, which benefits from the availability of the E-field polarization ellipse information obtained with the EUmmWV2 probe. The average of the reconstructed power density is evaluated over a circular area in each measurement plane. Two average power density values can be computed, the average total power density and the average incident power density, and the average total power density is used to determine compliance. The software post-processing reports to values, “S avg tot” and “S avg inc”. “S avg tot” represents average total power density (all three xyz components included), and “S avg inc” represents average normal power density. The average total power density “S avg tot” is reported to determine the device compliance. TEL : 886-3-327-3456 Page 12 of 15 FAX : 886-3-328-4978 Issued Date : Aug. 28, 2019 Form version: 180516

seorton cas. _RF EXPOSURE EVALUATION REPORT Report No. : FABNO616—06C 9.3 Test Positions Measurement Plane Bucad Transmitter Left Side esps Top Side Eoncuiscd 10mm 10mm 10mm 10mm Test Required Note: 1. Bottom side was not necessary due to the transmitter antenna to the edge is higher 25mm 10. RF Exposure Evaluation Results When operation on the head, the 60GHz transmitter is disabled _z 2. The PD test was performed of a 10mm separation between sensor and EUT surface (the probe tip is 0.5mm to the EUT surface). 3. According to TCBC Workshop in October 2018, 4 cm*2 averaging area may now be considered. 4. Using test software, the device under test was configured to transmit maximum power and at 100% duty cycle, at the 60G frequency. The actual RF signalis a wideband signal and is limited to transmit at 10% duty cycle. Therefore the measured maximum 4cm*2 average power density was scaled to account for the 10% duty factor Front 10mm 25.6000 Back 10mm 5.1000 Right Side 10mm 5.0300 Left Side 10mm 6.8300 Top Side 10mm 12.6000 Test Engineer : Steven Chang and Tom Jiang TEL : 886—3—327—3456 Page 13 of 15 FAX : 886—3—328—4978 Issued Date : Aug. 28, 2019 Form version: 180516

seortrow cas. _RF EXPOSURE EVALUATION REPORT Report No. : FA8SNO616—06C 11. Uncertainty Assessment The budgetis valid for evaluation distances > A/21. For specific tests and configurations, the Uncertainty could be considerably smaller. Probe Calibration I|1|1|1|1|1|1|z|1|m|m|m|z 8 Hemispherical Isotropy 8| Linearity 8| System Detection Limits 8]}8]} Modulation Response Readout Electronics 8|81 Response Time Integration Time 81818181 RF Ambient Noise RF Ambient Reflections Probe Positioner Probe Positioning 818| Savg Reconstruction Power Drift Input Power TEL : 886—3—327—3456 Page 14 0f 15 FAX : 886—3—328—4978 Issued Date : Aug. 28, 2019 Form version: 180516

RF EXPOSURE EVALUATION REPORT Report No. : FA8N0616-06C 12. References [1] FCC 47 CFR Part 2 “Frequency Allocations and Radio Treaty Matters; General Rules and Regulations” [2] FCC KDB 447498 D01 v06, “Mobile and Portable Device RF Exposure Procedures and Equipment Authorization Policies”, Oct 2015 [3] FCC KDB 865664 D02 v01r02, “RF Exposure Compliance Reporting and Documentation Considerations” Oct 2015. [4] FCC KDB 648474 D04 v01r03, “SAR Evaluation Considerations for Wireless Handsets”, Oct 2015. TEL : 886-3-327-3456 Page 15 of 15 FAX : 886-3-328-4978 Issued Date : Aug. 28, 2019 Form version: 180516


Document Created: 2019-09-03 15:23:52
Document Modified: 2019-09-03 15:23:52
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