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FCC ID: PPD-AR5B125

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FCC OET BULLETIN 65 SUPPLEMENT C IEEE STD 1528:2003 IC RSS-102 ISSUE 4 SAR EVALUATION REPORT For AR5B125:802.11bgn 1x1 MODEL: AR5B125 FCC ID: PPD-AR5B125 IC: 4104A-AR5B125 REPORT NUMBER: 10U13575-1 ISSUE DATE: March 4, 2011 Prepared for ATHEROS COMMUNICATIONS, INC. 1700 TECHNOLOGY DR SAN JOSE, CA 95110 Prepared by COMPLIANCE CERTIFICATION SERVICES (UL CCS) 47173 BENICIA STREET FREMONT, CA 94538, U.S.A. TEL: (510) 771-1000 FAX: (510) 661-0888

REPORT NO: 10U13575-1 DATE: March 4, 2011 FCC ID: PPD-AR5B125 IC: 4104A-AR5B125 Revision History Rev. Issue Date Revisions Revised By -- March 4, 2011 Initial Issue -- Page 2 of 26 COMPLIANCE CERTIFICATION SERVICES (UL CCS) FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 10U13575-1 DATE: March 4, 2011 FCC ID: PPD-AR5B125 IC: 4104A-AR5B125 TABLE OF CONTENTS 1. ATTESTATION OF TEST RESULTS.................................................................................................. 4 2. TEST METHODOLOGY ...................................................................................................................... 5 3. FACILITIES AND ACCREDITATION.................................................................................................. 5 4. CALIBRATION AND UNCERTAINTY................................................................................................. 6 4.1. MEASURING INSTRUMENT CALIBRATION ............................................................................. 6 4.2. MEASUREMENT UNCERTAINTY.............................................................................................. 7 5. EQUIPMENT UNDER TEST ............................................................................................................... 8 6. ANTENNA LOCATIONS AND SEPARATION DISTANCES .............................................................. 9 6.1. ANTENNA POSITIONED VERTICALLY ..................................................................................... 9 6.2. ANTENNA POSITIONED HORIZONTALLY ............................................................................. 10 7. SYSTEM SPECIFICATIONS ............................................................................................................. 11 8. TISSUE DIELECTRIC PARAMETERS ............................................................................................. 12 8.1. TISSUE PARAMETERS CHECK RESULTS ............................................................................ 13 9. SYSTEM VERIFICATION.................................................................................................................. 14 9.1. SYSTEM CHECK RESULTS .................................................................................................... 14 10. SAR MEASUREMENT PROCEDURES ....................................................................................... 15 11. RF OUTPUT POWER VERIFICATION......................................................................................... 16 12. SUMMARY OF SAR TEST RESULTS ......................................................................................... 17 12.1. Antenna Vertical Up .................................................................................................................. 17 12.2. Antenna Vertical Down.............................................................................................................. 18 12.3. Antenna Horizontal Up .............................................................................................................. 19 12.4. Antenna Horizontal Down.......................................................................................................... 20 12.5. Antenna Horizontal Front .......................................................................................................... 21 12.6. Antenna Horizontal Back (Worst case) ..................................................................................... 22 13. WORST CASE SAR TEST PLOTS .............................................................................................. 23 14. ENHANCED ENERGY COUPLING.............................................................................................. 25 15. ATTACHMENTS ........................................................................................................................... 26 Page 3 of 26 COMPLIANCE CERTIFICATION SERVICES (UL CCS) FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 10U13575-1 DATE: March 4, 2011 FCC ID: PPD-AR5B125 IC: 4104A-AR5B125 1. ATTESTATION OF TEST RESULTS Tested for: ATHEROS COMMUNICATIONS, INC. 1700 TECHNOLOGY DR SAN JOSE, CA 95110 EUT description: AR5B125: 802.11bgn 1x1 Model number: AR5B125 Device category: Portable Exposure category: General Population/Uncontrolled Exposure Date tested: March 1, 2011 FCC / IC Rule Parts Freq. Range [MHz] The Highest 1g SAR mW/g Limit (mW/g) 15.247 / RSS-102 2412 - 2462 0.377 (Antenna Horizontal Back) 1.6 The most conservative antenna-to-user 2 cm separation distances used during the test: (refer to setup diagram in section 6.1and 6.2) Applicable Standards Test Results FCC OET Bulletin 65 Supplement C 01-01, IEEE STD 1528: 2003, Pass IC RSS 102 Issue 4 Compliance Certification Services, Inc. (UL CCS) tested the above equipment in accordance with the requirements set forth in the above standards. All indications of Pass/Fail in this report are opinions expressed by UL CCS based on interpretations and/or observations of test results. Measurement Uncertainties were not taken into account and are published for informational purposes only. The test results show that the equipment tested is capable of demonstrating compliance with the requirements as documented in this report. Note: The results documented in this report apply only to the tested sample, under the conditions and modes of operation as described herein. This document may not be altered or revised in any way unless done so by UL CCS and all revisions are duly noted in the revisions section. Any alteration of this document not carried out by UL CCS will constitute fraud and shall nullify the document. This report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, any agency of the Federal Government, or any agency of any government (NIST Handbook 150, Annex A). This report is written to support regulatory compliance of the applicable standards stated above. Approved & Released For UL CCS By: Tested By: Sunny Shih Devin Chang Engineering Team Leader EMC Engineer Compliance Certification Services (UL CCS) Compliance Certification Services (UL CCS) Page 4 of 26 COMPLIANCE CERTIFICATION SERVICES (UL CCS) FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 10U13575-1 DATE: March 4, 2011 FCC ID: PPD-AR5B125 IC: 4104A-AR5B125 2. TEST METHODOLOGY FCC OET Bulletin 65 Supplement C 01-01, IEEE STD 1528-2003 and the following specific FCC test procedures: - KDB 248227 SAR measurement procedures for 802.11a/b/g transmitters - KDB 616217 D03 SAR Supplemental consideration for Notebook/Netbook/Laptop and Tablet 3. FACILITIES AND ACCREDITATION The test sites and measurement facilities used to collect data are located at 47173 Benicia Street, Fremont, California, USA. UL CCS is accredited by NVLAP, Laboratory Code 200065-0. The full scope of accreditation can be viewed at http://www.ccsemc.com. Page 5 of 26 COMPLIANCE CERTIFICATION SERVICES (UL CCS) FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 10U13575-1 DATE: March 4, 2011 FCC ID: PPD-AR5B125 IC: 4104A-AR5B125 4. CALIBRATION AND UNCERTAINTY 4.1. MEASURING INSTRUMENT CALIBRATION The measuring equipment utilized to perform the tests documented in this report has been calibrated in accordance with the manufacturer's recommendations, and is traceable to recognized national standards. Cal. Due date Name of Equipment Manufacturer Type/Model Serial No. MM DD Year Robot - Six Axes Stäubli RX90BL N/A N/A Robot Remote Control Stäubli CS7MB 3403-91535 N/A DASY4 Measurement Server SPEAG SEUMS001BA 1041 N/A Probe Alignment Unit SPEAG LB (V2) 261 N/A SAM Phantom (SAM1) SPEAG QD000P40CA 1185 N/A SAM Phantom (SAM2) SPEAG QD000P40CA 1050 N/A Oval Flat Phantom (ELI 4.0) SPEAG QD OVA001 B 1003 N/A Dielectronic Probe kit HP 85070C N/A N/A ESA Series Network Analyzer Agilent E5071B MY42100131 8 2 2011 Synthesized Signal Generator HP 83732B US34490599 7 14 2012 E-Field Probe SPEAG EX3DV4 3749 11 13 2011 Thermometer ERTCO 639-1S 1718 7 19 2011 Data Acquisition Electronics SPEAG DAE3 V1 427 7 21 2011 System Validation Dipole SPEAG D2450V2 706 4 19 2012 Power Meter Giga-tronics 8651A 8651404 3 13 2012 Power Sensor Giga-tronics 80701A 1834588 3 13 2012 Amplifier Mini-Circuits ZVE-8G 90606 N/A Amplifier Mini-Circuits ZHL-42W D072701-5 N/A Simulating Liquid SPEAG M2450 N/A Within 24 hrs of first test Note: Per KDB 450824 D02 requirements for dipole calibration, UL CCS has adopted two years calibration intervals. On annual basis, each measurement dipole has been evaluated and is in compliance with the following criteria: 1. There is no physical damage on the dipole 2. System validation with specific dipole is within 10% of calibrated value. 3. Return-loss is within 20% of calibrated measurement 4. Impedance is within 5Ω of calibrated measurement Page 6 of 26 COMPLIANCE CERTIFICATION SERVICES (UL CCS) FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 10U13575-1 DATE: March 4, 2011 FCC ID: PPD-AR5B125 IC: 4104A-AR5B125 4.2. MEASUREMENT UNCERTAINTY Measurement uncertainty for 300 MHz to 3 GHz averaged over 1 gram Component error, % Probe Distribution Divisor Sensitivity U (Xi), % Measurement System Probe Calibration (k=1) @ Body 2450 MHz 5.50 Normal 1 1 5.50 Axial Isotropy 1.15 Rectangular 1.732 0.7071 0.47 Hemispherical Isotropy 2.30 Rectangular 1.732 0.7071 0.94 Boundary Effect 0.90 Rectangular 1.732 1 0.52 Probe Linearity 3.45 Rectangular 1.732 1 1.99 System Detection Limits 1.00 Rectangular 1.732 1 0.58 Readout Electronics 0.30 Normal 1 1 0.30 Response Time 0.80 Rectangular 1.732 1 0.46 Integration Time 2.60 Rectangular 1.732 1 1.50 RF Ambient Conditions - Noise 3.00 Rectangular 1.732 1 1.73 RF Ambient Conditions - Reflections 3.00 Rectangular 1.732 1 1.73 Probe Positioner Mechanical Tolerance 0.40 Rectangular 1.732 1 0.23 Probe Positioning with respect to Phantom 2.90 Rectangular 1.732 1 1.67 Extrapolation, Interpolation and Integration 1.00 Rectangular 1.732 1 0.58 Test Sample Related Test Sample Positioning 2.90 Normal 1 1 2.90 Device Holder Uncertainty 3.60 Normal 1 1 3.60 Output Power Variation - SAR Drift 5.00 Rectangular 1.732 1 2.89 Phantom and Tissue Parameters Phantom Uncertainty (shape and thickness) 4.00 Rectangular 1.732 1 2.31 Liquid Conductivity - deviation from target 5.00 Rectangular 1.732 0.64 1.85 Liquid Conductivity - measurement 0.72 Normal 1 0.64 0.46 Liquid Permittivity - deviation from target 5.00 Rectangular 1.732 0.6 1.73 Liquid Permittivity - measurement -1.59 Normal 1 0.6 -0.95 Combined Standard Uncertainty Uc(y) = 9.50 Expanded Uncertainty U, Coverage Factor = 2, > 95 % Confidence = 19.00 % Expanded Uncertainty U, Coverage Factor = 2, > 95 % Confidence = 1.51 dB Page 7 of 26 COMPLIANCE CERTIFICATION SERVICES (UL CCS) FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 10U13575-1 DATE: March 4, 2011 FCC ID: PPD-AR5B125 IC: 4104A-AR5B125 5. EQUIPMENT UNDER TEST AR5B125: 802.11bgn 1x1 Antenna tested: Manufactured Part number Wistron 81.EBJ15.005 The most conservative antenna-to-user 2.0 cm from antenna-to-user (refer to setup diagram in separation distances used during the section 6.1 and 6.2) test: Antenna-to-antenna physical separation Only one antenna provided. distances used during the test with Vertical placement: Antenna-to-antenna physical separation Only one antenna provided. distances used during the test with Horizontal placement: The most conservative physical Only one antenna provided. separation distance between Main/Aux antennas to avoid SAR distribution overlap: Page 8 of 26 COMPLIANCE CERTIFICATION SERVICES (UL CCS) FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 10U13575-1 DATE: March 4, 2011 FCC ID: PPD-AR5B125 IC: 4104A-AR5B125 6. ANTENNA LOCATIONS AND SEPARATION DISTANCES 6.1. ANTENNA POSITIONED VERTICALLY Setup diagram Flat Phantom SAR probe 2 cm Styrofoam Antenna 50 ohm coaxial cable length: 300 mm > 10 cm WiFi Module Host Computer Test setup: The WiFi module is installed in a host laptop computer during the tests. Test software exercised the radio card. Test software: New Atheros Radio Test (ART2-GUI), Version: 1.6 Page 9 of 26 COMPLIANCE CERTIFICATION SERVICES (UL CCS) FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 10U13575-1 DATE: March 4, 2011 FCC ID: PPD-AR5B125 IC: 4104A-AR5B125 6.2. ANTENNA POSITIONED HORIZONTALLY Setup diagram Flat Phantom SAR probe 2 cm Antenna Styrofoam > 10 cm 50 ohm coaxial cable length: 300 mm WiFi Module Host Computer Test setup: The WiFi module is installed in a host laptop computer during the tests. Test software exercised the radio card. Test software: New Atheros Radio Test (ART2-GUI), Version: 1.6 Page 10 of 26 COMPLIANCE CERTIFICATION SERVICES (UL CCS) FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 10U13575-1 DATE: March 4, 2011 FCC ID: PPD-AR5B125 IC: 4104A-AR5B125 7. SYSTEM SPECIFICATIONS The DASY4 system for performing compliance tests consists of the following items: • A standard high precision 6-axis robot (Stäubli RX family) with controller, teach pendant and software. An arm extension for accommodating the data acquisition electronics (DAE). • A dosimetric probe, i.e., an isotropic E-field probe optimized and calibrated for usage in tissue simulating liquid. The probe is equipped with an optical surface detector system. • A data acquisition electronics (DAE) which performs the signal amplification, signal multiplexing, AD-conversion, offset measurements, mechanical surface detection, collision detection, etc. The unit is battery powered with standard or rechargeable batteries. The signal is optically transmitted to the EOC. • The function of the measurement server is to perform the time critical tasks such as signal filtering, control of the robot operation and fast movement interrupts. • A probe alignment unit which improves the (absolute) accuracy of the probe positioning. • A computer operating Windows 2000 or Windows XP. • DASY4 software. • Remote controls with teach pendant and additional circuitry for robot safety such as warning lamps, etc. • The SAM twin phantom enabling testing left-hand and right-hand usage. • The device holder for handheld mobile phones. • Tissue simulating liquid mixed according to the given recipes. • Validation dipole kits allowing validating the proper functioning of the system. Page 11 of 26 COMPLIANCE CERTIFICATION SERVICES (UL CCS) FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 10U13575-1 DATE: March 4, 2011 FCC ID: PPD-AR5B125 IC: 4104A-AR5B125 8. TISSUE DIELECTRIC PARAMETERS The simulating liquids should be checked at the beginning of a series of SAR measurements to determine of the dielectric parameters are within the tolerances of the specified target values. For frequencies in 300 MHz to 2 GHz, the measured conductivity and relative permittivity should be within ± 5% of the target values. For frequencies in the range of 2–3 GHz and above the measured conductivity should be within ± 5% of the target values. The measured relative permittivity tolerance can be relaxed to no more than ± 10%. Reference Values of Tissue Dielectric Parameters for Head & Body Phantom The body tissue parameters that have not been specified in P1528 are derived from the tissue dielectric parameters computed from the 4-Cole-Cole equations and extrapolated according to the head parameters specified in IEEE Standard 1528. Head Body Target Frequency (MHz) εr σ (S/m) εr σ (S/m) 150 52.3 0.76 61.9 0.8 300 45.3 0.87 58.2 0.92 450 43.5 0.87 56.7 0.94 835 41.5 0.9 55.2 0.97 900 41.5 0.97 55 1.05 915 41.5 0.98 55 1.06 1450 40.5 1.2 54 1.3 1610 40.3 1.29 53.8 1.4 1800 – 2000 40 1.4 53.3 1.52 2450 39.2 1.8 52.7 1.95 3000 38.5 2.4 52 2.73 5800 35.3 5.27 48.2 6 (εr = relative permittivity, σ = conductivity and ρ = 1000 kg/m3) Reference Values of Tissue Dielectric Parameters for Body Phantom (for 3000 MHz – 5800 MHz) In the current guidelines and draft standards for compliance testing of mobile phones (i.e., IEEE P1528, OET 65 Supplement C), the dielectric parameters suggested for head and body tissue simulating liquid are given only at 3.0 GHz and 5.8 GHz. As an intermediate solution, dielectric parameters for the frequencies between 5 to 5.8 GHz were obtained using linear interpolation (see table below). SPEAG has developed suitable head and body tissue simulating liquids consisting of the following ingredients: de-ionized water, salt and a special composition including mineral oil and an emulgators. Dielectric parameters of these liquids were measured suing a HP 8570C Dielectric Probe Kit in conjunction with HP 8753ES Network Analyzer (30 kHz – 6G Hz). The differences with respect to the interpolated values were well within the desired ±5% for the whole 5 to 5.8 GHz range. Body Tissue f (MHz) Reference rel. permitivity conductivity 3000 52.0 2.73 Standard 5100 49.1 5.18 Interpolated 5200 49.0 5.30 Interpolated 5300 48.9 5.42 Interpolated 5400 48.7 5.53 Interpolated 5500 48.6 5.65 Interpolated 5600 48.5 5.77 Interpolated 5700 48.3 5.88 Interpolated 5800 48.2 6.00 Standard (εr = relative permittivity, σ = conductivity and ρ = 1000 kg/m3) Page 12 of 26 COMPLIANCE CERTIFICATION SERVICES (UL CCS) FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 10U13575-1 DATE: March 4, 2011 FCC ID: PPD-AR5B125 IC: 4104A-AR5B125 8.1. TISSUE PARAMETERS CHECK RESULTS Date Freq. (MHz) Liquid Parameters Measured Target Delta (%) Limit ±(%) e' 51.8628 Relative Permittivity (є r): 51.86 52.70 -1.59 5 02/28/2011 Body 2450 e" 14.4179 Conductivity (σ): 1.96 1.95 0.72 5 Liquid Check Ambient temperature: 24 deg. C; Liquid temperature: 23 deg. C; Relative humidity = 37% March 01, 2011 09:26 AM Frequency e' e'' 2410000000. 51.9739 14.2287 2415000000. 51.9550 14.2493 2420000000. 51.9394 14.2734 2425000000. 51.9246 14.2979 2430000000. 51.9101 14.3210 2435000000. 51.8976 14.3469 2440000000. 51.8859 14.3688 2445000000. 51.8720 14.3941 2450000000. 51.8628 14.4179 2455000000. 51.8523 14.4396 2460000000. 51.8368 14.4621 2465000000. 51.8239 14.4815 2470000000. 51.8101 14.4989 2475000000. 51.7920 14.5188 2480000000. 51.7756 14.5358 2485000000. 51.7581 14.5508 The conductivity (σ) can be given as: σ = ωε0 e''= 2 π f ε0 e'' where f = target f * 106 ε0 = 8.854 * 10-12 Page 13 of 26 COMPLIANCE CERTIFICATION SERVICES (UL CCS) FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 10U13575-1 DATE: March 4, 2011 FCC ID: PPD-AR5B125 IC: 4104A-AR5B125 9. SYSTEM VERIFICATION The system performance check is performed prior to any usage of the system in order to verify SAR system accuracy. The system performance check verifies that the system operates within its specifications of ±10%. System Performance Check Measurement Conditions • The measurements were performed in the flat section of the SAM twin phantom filled with Body simulating liquid of the following parameters. • The DASY4 system with an Isotropic E-Field Probe EX3DV3-SN: 3531 was used for the measurements. • The dipole was mounted on the small tripod so that the dipole feed point was positioned below the center marking of the flat phantom section and the dipole was oriented parallel to the body axis (the long side of the phantom). The standard measuring distance was 10 mm (above 1 GHz) and 15 mm (below 1 GHz) from dipole center to the simulating liquid surface. • The coarse grid with a grid spacing of 15 mm was aligned with the dipole. For 5 GHz band - The coarse grid with a grid spacing of 10 mm was aligned with the dipole. • Special 7x7x7 (2.4 GHz) fine cube was chosen for cube integration and Special 8x8x10 (5 GHz) fine cube was chosen for cube integration • Distance between probe sensors and phantom surface was set to 3 mm. For 5 GHz band - Distance between probe sensors and phantom surface was set to 2.5 mm • The dipole input powers (forward power) were 100 mW. • The results are normalized to 1 W input power. Reference SAR Values for HEAD & BODY-tissue from calibration certificate of SPEAG. System Cal. Cal. Freq. SAR Avg (mW/g) Cal. certificate # validation dipole date (GHz) Tissue: Head Body SAR1g: 51.6 52.4 D2450V2 D2450V2-706_Apr10 4/19/10 2.4 SAR10g: 24.4 24.5 9.1. SYSTEM CHECK RESULTS System Measured (Normalized to 1 W) Tolerance Date Tested Target Delta (%) validation dipole Tissue: Body (%) SAR1g : 51.2 52.4 -2.29 D2450V2 03/01/11 ±10 SAR10g : 23.1 24.5 -5.71 Page 14 of 26 COMPLIANCE CERTIFICATION SERVICES (UL CCS) FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 10U13575-1 DATE: March 4, 2011 FCC ID: PPD-AR5B125 IC: 4104A-AR5B125 10. SAR MEASUREMENT PROCEDURES Step 1: Power Reference Measurement The Power Reference Measurement and Power Drift Measurements are for monitoring the power drift of the device under test in the batch process. The Minimum distance of probe sensors to surface determines the closest measurement point to phantom surface. The minimum distance of probe sensors to surface is 2.1 mm. This distance cannot be smaller than the Distance of sensor calibration points to probe tip as defined in the probe properties (for example, 1.2 mm for an EX3DV3 probe type). Step 2: Area Scan The Area Scan is used as a fast scan in two dimensions to find the area of high field values, before doing a fine measurement around the hot spot. The sophisticated interpolation routines implemented in DASY4 software can find the maximum locations even in relatively coarse grids. When an Area Scan has measured all reachable points, it computes the field maximal found in the scanned area, within a range of the global maximum. The range (in dB) is specified in the standards for compliance testing. For example, a 2 dB range is required in IEEE Standard 1528, EN 50361 and IEC 62209 standards, whereby 3 dB is a requirement when compliance is assessed in accordance with the ARIB standard (Japan). If only one Zoom Scan follows the Area Scan, then only the absolute maximum will be taken as reference. For cases where multiple maximums are detected, the number of Zoom Scans has to be increased accordingly. Step 3: Zoom Scan Zoom Scans are used to assess the peak spatial SAR values within a cubic averaging volume containing 1 g and 10 g of simulated tissue. The Zoom Scan measures ≥ 7 x 7 x 9 points within a cube whose base faces are centered on the maxima found in a preceding area scan job within the same procedure. When the measurement is done, the Zoom Scan evaluates the averaged SAR for 1 g and 10 g and displays these values next to the job’s label. Step 4: Power drift measurement The Power Drift Measurement measures the field at the same location as the most recent power reference measurement within the same procedure, and with the same settings. The Power Drift Measurement gives the field difference in dB from the reading conducted within the last Power Reference Measurement. This allows a user to monitor the power drift of the device under test within a batch process. The measurement procedure is the same as Step 1. Step 5: Z-Scan The Z Scan measures points along a vertical straight line. The line runs along the Z-axis of a one- dimensional grid. In order to get a reasonable extrapolation, the extrapolated distance should not be larger than the step size in Z-direction. Page 15 of 26 COMPLIANCE CERTIFICATION SERVICES (UL CCS) FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 10U13575-1 DATE: March 4, 2011 FCC ID: PPD-AR5B125 IC: 4104A-AR5B125 11. RF OUTPUT POWER VERIFICATION Measurement Results Conducted Avg Power Mode Channel # Freq. (MHz) (dBm) (mW) 1 2412 16.4 43.7 802.11b 6 2437 18.2 66.1 11 2462 18.0 63.1 1 2412 14.6 28.8 802.11g 6 2437 18.0 63.1 11 2462 13.8 24.0 1 2412 13.3 21.4 802.11n HT20 6 2437 16.5 44.7 11 2462 12.9 19.5 3 2422 12.3 17.0 802.11n HT40 6 2437 14.5 28.2 9 2452 11.8 15.1 Note(s): 1. SAR tested on the highest output power channel. 2. According to KDB 248227, SAR is not required for 802.11g/HT20/HT40 channels when the maximum average output power is less than 1/4 dB higher than that measured on the corresponding 802.11b channels. Page 16 of 26 COMPLIANCE CERTIFICATION SERVICES (UL CCS) FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 10U13575-1 DATE: March 4, 2011 FCC ID: PPD-AR5B125 IC: 4104A-AR5B125 12. SUMMARY OF SAR TEST RESULTS 12.1. Antenna Vertical Up Test result Avg Pwr Results (mW/g) Mode Channel f (MHz) (dBm) 1g-SAR 10g-SAR 1 2412 16.4 802.11b 6 2437 18.2 0.091 0.066 (1x1) 11 2462 18.0 Notes: 1. SAR tested on the highest output power channel. 2. According to KDB 248227, SAR is not required for 802.11g/HT20/HT40 channels when the maximum average output power is less than 1/4 dB higher than that measured on the corresponding 802.11b channels. Page 17 of 26 COMPLIANCE CERTIFICATION SERVICES (UL CCS) FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 10U13575-1 DATE: March 4, 2011 FCC ID: PPD-AR5B125 IC: 4104A-AR5B125 12.2. Antenna Vertical Down Test result Avg Pwr Results (mW/g) Mode Channel f (MHz) (dBm) 1g-SAR 10g-SAR 1 2412 16.4 802.11b 6 2437 18.2 0.074 0.054 (1x1) 11 2462 18.0 Notes: 1. SAR tested on the highest output power channel. 2. This module is not capable of single antnena transmitting mode in either b/g/H20/H40 3. According to KDB 248227. SAR is not required for 802.11g/HT20/HT40 channels when the maximum average output power is less than 1/4 dB higher than that measured on the corresponding 802.11b channels. Page 18 of 26 COMPLIANCE CERTIFICATION SERVICES (UL CCS) FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 10U13575-1 DATE: March 4, 2011 FCC ID: PPD-AR5B125 IC: 4104A-AR5B125 12.3. Antenna Horizontal Up Test result Avg Pwr Results (mW/g) Mode Channel f (MHz) (dBm) 1g-SAR 10g-SAR 1 2412 16.4 802.11b 6 2437 18.2 0.291 0.171 (1x1) 11 2462 18.0 Notes: 1. SAR tested on the highest output power channel. 2. This module is not capable of single antnena transmitting mode in either b/g/H20/H40 3. According to KDB 248227. SAR is not required for 802.11g/HT20/HT40 channels when the maximum average output power is less than 1/4 dB higher than that measured on the corresponding 802.11b channels. Page 19 of 26 COMPLIANCE CERTIFICATION SERVICES (UL CCS) FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 10U13575-1 DATE: March 4, 2011 FCC ID: PPD-AR5B125 IC: 4104A-AR5B125 12.4. Antenna Horizontal Down Test result Avg Pwr Results (mW/g) Mode Channel f (MHz) (dBm) 1g-SAR 10g-SAR 1 2412 16.4 802.11b 6 2437 18.2 0.082 0.056 (1x1) 11 2462 18.0 Notes: 1. SAR tested on the highest output power channel. 2. This module is not capable of single antnena transmitting mode in either b/g/H20/H40 3. According to KDB 248227. SAR is not required for 802.11g/HT20/HT40 channels when the maximum average output power is less than 1/4 dB higher than that measured on the corresponding 802.11b channels. Page 20 of 26 COMPLIANCE CERTIFICATION SERVICES (UL CCS) FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 10U13575-1 DATE: March 4, 2011 FCC ID: PPD-AR5B125 IC: 4104A-AR5B125 12.5. Antenna Horizontal Front Test result Avg Pwr Results (mW/g) Mode Channel f (MHz) (dBm) 1g-SAR 10g-SAR 1 2412 16.4 802.11b 6 2437 18.2 0.219 0.129 (1x1) 11 2462 18.0 Notes: 1. SAR tested on the highest output power channel. 2. This module is not capable of single antnena transmitting mode in either b/g/H20/H40 3. According to KDB 248227. SAR is not required for 802.11g/HT20/HT40 channels when the maximum average output power is less than 1/4 dB higher than that measured on the corresponding 802.11b channels. Page 21 of 26 COMPLIANCE CERTIFICATION SERVICES (UL CCS) FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 10U13575-1 DATE: March 4, 2011 FCC ID: PPD-AR5B125 IC: 4104A-AR5B125 12.6. Antenna Horizontal Back (Worst case) Test result Avg Pwr Results (mW/g) Mode Channel f (MHz) (dBm) 1g-SAR 10g-SAR 1 2412 16.4 802.11b 6 2437 18.2 0.377 0.230 (1x1) 11 2462 18.0 Notes: 1. SAR tested on the highest output power channel. 2. This module is not capable of single antnena transmitting mode in either b/g/H20/H40 3. According to KDB 248227. SAR is not required for 802.11g/HT20/HT40 channels when the maximum average output power is less than 1/4 dB higher than that measured on the corresponding 802.11b channels. Page 22 of 26 COMPLIANCE CERTIFICATION SERVICES (UL CCS) FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 10U13575-1 DATE: March 4, 2011 FCC ID: PPD-AR5B125 IC: 4104A-AR5B125 13. WORST CASE SAR TEST PLOTS Page 23 of 26 COMPLIANCE CERTIFICATION SERVICES (UL CCS) FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

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REPORT NO: 10U13575-1 DATE: March 4, 2011 FCC ID: PPD-AR5B125 IC: 4104A-AR5B125 14. ENHANCED ENERGY COUPLING According to KDB 616217 in referencing to KDB 447498, the test configuration with the highest 1-g SAR must be used to determine if additional SAR evaluation is required due to enhanced energy coupling at increased separation distances. From the test results below, additional 1-g SAR evaluation is not required. Antenna-to-Phantom Test configuration Band Peak SAR (mW/g) E-field (V/m) Lower than Initial (%) distance (cm) Initial 2 0.091 7.33 1 2.5 0.08 6.68 82.9% Vertical Up 2.4 GHz 2 3 0.06 6.14 70.1% 3 3.5 0.05 5.54 57.1% 4 4 0.04 5.13 48.9% Initial 2 0.074 6.39 1 2.5 0.06 5.90 85.3% Vertical Down 2.4 GHz 2 3 0.06 5.53 74.9% 3 3.5 0.05 5.02 61.7% 4 4 0.03 4.35 46.5% Initial 2 0.291 12.43 1 2.5 0.22 10.81 75.6% Horizontal Up 2.4 GHz 2 3 0.17 9.52 58.6% 3 3.5 0.14 8.59 47.8% Initial 2 0.082 6.95 1 2.5 0.06 5.92 72.7% Horizontal Down 2.4 GHz 2 3 0.05 5.21 56.3% 3 3.5 0.04 4.89 49.6% Initial 2 0.219 11.67 Horizontal Front 2.4 GHz 1 2.5 0.15 9.75 69.9% 2 3 0.11 8.18 49.1% Initial 2 0.377 15.19 Horizontal Back 2.4 GHz 1 2.5 0.23 11.92 61.6% 2 3 0.17 10.09 44.1% Page 25 of 26 COMPLIANCE CERTIFICATION SERVICES (UL CCS) FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.

REPORT NO: 10U13575-1 DATE: March 4, 2011 FCC ID: PPD-AR5B125 IC: 4104A-AR5B125 15. ATTACHMENTS No. Contents No. of page (s) 1 System Check Plots 2 2 SAR Test Plots 7 3 Certificate of E-Field Probe - EX3DV3 SN 3531 11 4 Certificate of System Validation Dipole - D2450 SN:706 9 END OF REPORT Page 26 of 26 COMPLIANCE CERTIFICATION SERVICES (UL CCS) FORM NO: CCSUP4031B 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 771-1000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of UL CCS.


Document Created: 2011-03-07 13:27:55
Document Modified: 2011-03-07 13:27:55
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