RF Exposure Report

FCC ID: TA8AKRC161742-1

RF Exposure Info

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FCCID_4389927

1 (9) GFTL-19:000828 Uen, Rev A, 2019-07-26 Rapport utfärdad av ackrediterat provningslaboratorium Test report issued by an Accredited Testing Laboratory Ackred. Nr 1761 Provning ISO/IEC 17025 EMF Test Report: Ericsson Radio 4402 B66A (FCC) Document number: GFTL-19:000828 Uen Rev A Date of report: 2019-07-26 Testing laboratory: Ericsson EMF Research Company/Client: Hua Yang Laboratory CBC - Ericsson (China) Ericsson AB Communications Co. Ltd. SE-164 80 Stockholm ET2, No.5 Lize East street Sweden Chaoyang District 100102 Beijing China Tests performed by: Bo Xu Dates of tests: 2019-07-24 (Rev A) Manufacturer and market Ericsson Radio 4402 B66A name(s) of device: Testing has been performed FCC OET Bulletin 65 in accordance with: IEC 62232:2017 Test results: The tested equipment complies with the requirements in respect of all parameters subject to the test. Additional information: Signature: Test Engineer Deputy Quality Manager _____________________ __________________ Bo Xu Paramananda Joshi Experienced Researcher Senior Researcher bo.xu@ericsson.com paramananda.joshi@ericsson.com Tel: +46 10 713 13 84 Tel: +46 10 711 00 06 © Telefonaktiebolaget LM Ericsson AB. This report shall not be reproduced except in full, without written approval of the laboratory.

2 (9) GFTL-19:000828 Uen, Rev A, 2019-07-26 Summary of EMF Test Report1 Equipment under test (EUT) Product name Radio 4402 B66A Product number KRC 161 742/1 Supported bands, Tx frequency B66A (1700/2100) 2110–2180 WCDMA, LTE range (MHz) and standards Duplexing technology FDD Exposure environment General public/uncontrolled, Workers/controlled EIRP2 (dBm) and IEC 62232:2017 55.8 E+ installation class [4] Results RF exposure compliance boundaries, outside of which the exposure is below the general public (GP) and workers (W) exposure limits, are listed below. Dimensions of the box-shaped compliance boundary for general public (GP) and workers (W) exposure for Radio 4402 B66A applicable in the markets employing the FCC exposure limits for maximum output power with 0.6 dB output power tolerance. Dimensions of the box-shaped compliance boundary (m) Mode and output power for Radio 4402 B66A Distance in front Distance behind Width Height of EUT EUT Nominal output power Band Standard3 GP W GP W GP W GP W from the radio B66A W/L 4×5W 1.9 0.9 1.6 0.8 1.3 0.6 0 0 For the power levels specified in the table which include tolerances, and the upward rounding of compliance boundary dimensions to the nearest decimeter, the specified results are conservative. 1 This page contains a summary of the test results. The full report provides a complete description of all test details and results. 2 The stated EIRP values are the maximum EIRP without power tolerance included and are obtained using the antenna patterns provided by the antenna manufacturers. 3 The standards are abbreviated in this report according to: W for WCDMA and L for LTE.

3 (9) GFTL-19:000828 Uen, Rev A, 2019-07-26 1 General information The test results presented in this report define compliance boundaries for Radio 4402 B66A. Outside of these compliance boundaries, the radio frequency (RF) exposure levels are below the exposure limits specified by the Federal Communications Commission (FCC) [1]. The tests were performed by calculations in accordance with the Ericsson RF exposure calculation procedure for base stations [2], which is in conformity with the FCC OET Bulletin 65 [3] and IEC 62232:2017 [4]. It should be noted that the test results presented in this test report are valid for the power level specified in Table 3, including the power tolerance. These data were supplied by the client and may affect the validity of the results. EMF health and safety information to be included in the product documentation is provided in Appendices A, B and C. 2 Equipment under test Table 1 and Table 2 below summarize the technical data for the equipment under test (EUT) and the properties of the integrated antenna. Table 3 lists the nominal peak output power from the radio unit (total peak power from all antenna branches) and the total power delivered to the antenna for the specified configuration. The total power delivered to the antenna includes output power tolerance. Table 1 Technical data for the EUT. Product name and product number Radio 4402 B66A KRC 161 742/1 Supported bands, Tx frequency B66A (1700/2100) 2110–2180 WCDMA, LTE range (MHz), and standards Antenna KRE 105 280/1 Duplexing technology FDD Dimensions, 𝑯 × π‘Ύ × π‘« (mm) 213.5 × 200 × 125 Exposure environment General public/uncontrolled, Workers/controlled 2 EIRP (dBm) and IEC 62232:2017 55.8 E+ installation class [4] Table 2 Properties of the antenna. Product number KRE 105 280/1 Type Internal antenna, directional, 4 Tx Tested band and frequency range (MHz) 2110–2180 4 Gain (dBi) 9.9 Electrical downtilt angle (degree) -8 Number of dual-polarized elements per column 2, 2 Dimensions, 𝑯 × π‘Ύ × π‘« (mm) 200 × 200 × 25 Table 3 EUT configurations with nominal output power levels and total power levels with 0 dB transmission loss and 0.6 dB power tolerance. Band Standard3 Nominal output power from the radio (dBm/W) Total power delivered to antenna (dBm/W) B66A W/L 43.0 / 20 43.6 / 22.9 4 Maximum gain per antenna port.

4 (9) GFTL-19:000828 Uen, Rev A, 2019-07-26 3 Exposure conditions The EUT is intended to be installed on walls, poles, roof-tops, masts, and similar structures making it possible to ensure that the general public has no access to the EMF compliance boundary. Other installation related exposure conditions are not reasonably foreseeable for the EUT. The assessments were conducted for maximum power configurations, i.e., by assuming 100% utilization. Effects of real RBS utilization (time-averaged) is reasonably foreseeable and will significantly reduce the time- averaged power and the RF exposure. This factor was not considered in this assessment, which adds to the conservativeness of the obtained compliance boundaries. 4 EMF compliance boundary calculations The RF exposure was evaluated using calculations performed according to the Ericsson RF Exposure Calculation Procedure for Base Stations [2], which conforms to FCC OET Bulletin 65 [3] and IEC 62232:2017[4]. The calculations were made using the far-field spherical formula. The first step in calculating the compliance boundary was to use the spherical far-field formula to estimate power density: 𝑃a 𝐺(πœƒ, πœ™) 𝑆sph (πœƒ, πœ™) = , 4πœ‹π‘Ÿ 2 where 𝑆,𝑃a , 𝐺, π‘Ÿ, πœƒ, and πœ™ denote the power density, the power accepted by each antenna port, the antenna gain per port, the distance from the antenna, and the angular variables in a spherical coordinate system, respectively. Antenna far-field measurement data were provided by the client for three frequencies, specifically 2110 MHz, 2145 MHz, and 2170 MHz within Band 66A. The procedure described in this session was applied to each of these, and the compliance boundaries were determined as the maximum values for the tested frequencies. The maximum gain values were found to be 9.83 dBi (port A, pol. +45), 9.80 dBi (port B, pol. - 45), 9.63 dBi (port C, pol. +45), and 9.91 dBi (port D, pol. -45), considering all the tested frequencies. The accepted power per port was taken as the total power delivered to the antenna, including tolerances, πœ‹ πœ‹ divided by the number of ports. In the frontal hemisphere (πœ™ ∈ [− , ]), the exposure from antenna ports with 2 2 the same nominal polarizations (denoted ±45) were summed in a correlated way to consider beamforming while the exposure from antenna ports with different nominal polarizations were summed in an uncorrelated πœ‹ πœ‹ manner. Also, in the rear hemisphere (πœ™ ∉ [− , ] ), uncorrelated exposure was assumed [2]. With the two 2 2 antenna panels denoted 1 and 2, the total power density as estimated by the spherical far-field formula is thus given by 2 2 πœ‹ πœ‹ (√𝑆sph,1,+45 + √𝑆sph,2,+45 ) + (√𝑆sph,1,−45 + √𝑆sph,2,−45 ) , πœ™ ∈ [− , ] 𝑆total,sph = 2 2 πœ‹ πœ‹ { 𝑆sph,1,+45 + 𝑆sph,2,+45 + 𝑆sph,1,−45 + 𝑆sph,2,−45 , πœ™ ∉ [− , ] 2 2 The compliance distance for the spherical model, CDsph (πœƒ, πœ™) was obtained by solving the following equation for π‘Ÿ: 𝑆total,sph (π‘Ÿ, πœƒ, πœ™) lim = 1, 𝑆gp,w lim where 𝑆gp,w denotes the FCC power density limits for general public and workers exposure. For the frequency bands of interest, RF EMF exposure limits are given in [1]. Table 4 RF EMF exposure limits on power density for the frequency band used by the EUT [1].

5 (9) GFTL-19:000828 Uen, Rev A, 2019-07-26 Band 𝑺π₯𝐒𝐦 2 𝐠𝐩 (W/m ) 𝑺π₯𝐒𝐦 2 𝐰 (W/m ) B66A (1700/2100) 10 50 5 Results A box-shaped compliance boundary is used, characterized by its width, height, and the compliance distances behind and in front of the EUT, see Figure 1. Outside of this box, the RF exposure is below the exposure limits. Figure 1 Box-shaped structure specifying the compliance boundary for the tested RBS product. In Figure 2, the compliance distance results for general public (blue line) and workers (red line) exposure are given. Also shown are the resulting compliance boundaries (black lines, solid for general public, dashed for workers). The resulting compliance boundary dimensions are given in Table 5 rounded upwards to the nearest decimeter. Figure 2 Compliance boundary for general public (black solid line) and workers (black dashed line) exposure. The blue solid lines correspond to compliance distance results for general public exposure obtained using the spherical model. The solid red lines indicate the corresponding compliance distance results for workers exposure. The EUT is shown from above (left) and from the side (right) with its back plane located at x = 0 m. Mode: B66A (1700/2100) (W/L). Total power delivered to the antenna: 22.9 W.

6 (9) GFTL-19:000828 Uen, Rev A, 2019-07-26 Table 5 Dimensions of the box-shaped compliance boundary for general public (GP) and workers (W) exposure for Radio 4402 B66A applicable in the markets employing the FCC exposure limits for maximum output power with 0.6 dB output power tolerance. Dimensions of the box-shaped compliance boundary (m) Mode and output power for Radio 4402 B66A Distance in front Distance behind Width Height of EUT EUT Nominal output power Band Standard3 GP W GP W GP W GP W from the radio B66A W/L 4×5W 1.9 0.9 1.6 0.8 1.3 0.6 0 0 For the power levels specified in the table which include tolerances, and the upward rounding of compliance boundary dimensions to the nearest decimeter, the specified results are conservative. 6 Uncertainty The input parameters were chosen within their range so as to maximize the calculated compliance boundary dimensions. Consequently, the approach described in Section 4 results in an exposure assessment which is conservative. 7 Conclusion The results in Section 5 show the compliance boundary dimensions for the considered configuration when tested according to FCC OET bulletin 65 [3] and IEC 62232:2017 [4]. Outside of this compliance boundary, the exposure is below the exposure limits [1] The tested equipment complies with the requirements in respect of all parameters subject to the test. 8 References [1] FCC, Code of Federal Regulations CFR title 47, part 1.1310 “Radiofrequency radiation exposure limits”, Federal Communications Commission (FCC), August 1997. [2] Ericsson, GFTE-16:001718 Uen, “Ericsson RF exposure calculation procedure for base stations”. [3] FCC, “Evaluating compliance with FCC guidelines for human exposure to radiofrequency electromagnetic fields. OET Bulletin 65. Edition 97-01.” Federal Communications Commission (FCC), Office of Engineering and Technology, August 1997. [4] IEC 62232:2017, Determination of RF field strength, power density and SAR in the vicinity of radiocommunication base stations for the purpose of evaluating human exposure, June 2017. [5] R. Cicchetti and A. Faraone, “Estimation of the peak power density in the vicinity of cellular and radio base station antennas”, IEEE Trans. Electromagn. Compat., vol. 46, no. 2, pp. 275–290, 2004. [6] Ericsson, LME-12:001904 Uen, “Exposure to radio frequency electromagnetic fields”. 9 Revision history Rev. Date Description A 2019-07-26 First revision

7 (9) GFTL-19:000828 Uen, Rev A, 2019-07-26 Appendix A. Information to be included in the CPI Table A.1 below lists the compliance boundaries (exclusion zones), outside of which the RF EMF exposure from Radio 4402 is below the limits applicable in: – USA (47 CFR 1.1310) Table A.1 Dimensions of the box-shaped compliance boundary for general public (GP) and occupational (O) exposure for Radio 4402 applicable in the markets employing the FCC exposure limits (including 0.6 dB output power tolerance). Dimensions of the box-shaped compliance boundary(1) (m) Mode and output power for Radio 4402 Distance in Distance Width Height front of radio behind radio Nominal output power IEC 62232 Installation Band GP O GP O GP O GP O from the radio class B66A 4×5W E+ 1.9 0.9 1.6 0.8 1.3 0.6 0 0 (1) The compliance boundaries are determined for maximum output power with power tolerance.

8 (9) GFTL-19:000828 Uen, Rev A, 2019-07-26 Appendix B. Guidelines on how to install the product The Radio 4402 B66A product (KRC 161 742/1) shall be installed to make sure that the general public does not have access to the applicable RF EMF compliance boundary. The compliance boundary dimensions were determined for the product transmitting in free space.

9 (9) GFTL-19:000828 Uen, Rev A, 2019-07-26 Appendix C. Guidelines for workers during installation, maintenance, and repair of the product For Radio 4402 B66A (KRC 161 742/1), it is possible to work behind the RBS without any restrictions related to RF EMF exposure if the product is installed so that contributions from other ambient sources (e.g., other RBS products) are not significant and may be neglected. If work needs to be performed within the compliance boundary applicable for workers, the radio equipment shall be powered off, or the power be reduced to a level ensuring that the RF EMF exposure is below the relevant exposure limit for workers. If work is conducted on behalf of Ericsson, minimum EMF related requirements are provided in [6].


Document Created: 2019-07-26 10:44:50
Document Modified: 2019-07-26 10:44:50
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