PPD-AR5BCB-00021

AR5001 User Guide PRELIMINARY Revision July 2002 FCCID: PPD-AR5BCB-00021 PRELIMINARY ii• AR5001 STA User’s GuideAtheros Communications, Inc. ii •July 2002COMPANY CONFIDENTIAL © 2000–2002 by Atheros Communications, Inc. All rights reserved. ATHEROS, the Atheros logo, 5-UP, Driving the Wireless Future, Atheros Driven, Atheros Turbo Mode, and the Air is Cleaner at 5-GHz are trademarks of Atheros Communications, Inc. All other trademarks are the property of their respective holders. Notice The information in this document has been carefully reviewed and is believed to be accurate. Nonetheless, this document is subject to change without notice, and Atheros Communications, Inc. (Atheros) assumes no responsibility for any inaccuracies that may be contained in this document, and makes no commitment to update or to keep current the contained information, or to notify a person or organization of any updates. Atheros reserves the right to make changes, at any time, in order to improve reliability, function or design and to attempt to supply the best product possible. Atheros does not represent that products described herein are free from patent infringement or from any other third party right. No part of this document may be reproduced, adapted or transmitted in any form or by any means, electronic or mechanical, for any purpose, except as expressly set forth in a written agreement signed by Atheros. Atheros or its affiliates may have patents or pending patent applications, trademarks, copyrights, maskwork rights or other intellectual property rights that apply to the ideas, material and information expressed herein. No license to such rights is provided except as expressly set forth in a written agreement signed by Atheros. ATHEROS MAKES NO WARRANTIES OF ANY KIND WITH REGARD TO THE CONTENT OF THIS DOCUMENT. IN NO EVENT SHALL ATHEROS BE LIABLE FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL SPECULATORY OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OR INABILITY TO USE THIS PRODUCT OR DOCUMENTATION, EVEN IF ADVISED OF THE POSSIBLITY OF SUCH DAMAGES. IN PARTICULAR, ATHEROS SHALL NOT HAVE LIABILITY FOR ANY HARDWARE, SOFTWARE, OR DATA TRANSMITTED OR OTHERWISE USED WITH THE PRODUCT, INCLUDING THE COSTS OF REPAIRING, REPLACING, INTEGRATING, INSTALLING OR RECOVERING SUCH HARDWARE, SOFTWARE OR DATA. ATHEROS SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE AS THEY MIGHT OTHERWISE APPLY TO THIS DOCUMENT AND TO THE IDEAS, MATERIAL AND INFORMATION EXPRESSED HEREIN. Document Number: 984-00016-003 PRELIMINARY Atheros Communications, Inc.•iii COMPANY CONFIDENTIALJuly 2002•iii Document Conventions Text Conventions Notices boldBold type within paragraph text indicates commands, file names, directory names, paths, output, or returned values. Example: The DK_Client package will not function unless you use the wdreg_install batchfile. italicWithin commands, italics indicate a variable that the user must specify. Example: mem_alloc size_in_bytes Titles of manuals or other published documents are also set in italics. Courier The Courier font indicates output or display. Example: Error:Unable to allocate memory for transfer! MenuThe Menu character tag is used for menu items. Example: Choose Edit > Copy. [ ]Within commands, items enclosed in square brackets are optional parameters or values that the user can choose to specify or omit. { }Within commands, items enclosed in braces are options from which the user must choose. |Within commands, the vertical bar separates options. ...An ellipsis indicates a repetition of the preceding parameter. >The right angle bracket separates successive menu selections. Example: Start > Programs > DK > wdreg_install. NOTE:This message denotes neutral or positive information that calls out important points to the text. A note provides information that may apply only in special cases. PRELIMINARY iv•AR5001 STA User’s GuideAtheros Communications, Inc. iv•July 2002COMPANY CONFIDENTIAL D O N O T C O P Y Revision History RevisionDescription of Changes June 2002Initial release. D O N O T C O P Y PRELIMINARY Atheros Communications, Inc.Contents•v COMPANY CONFIDENTIALJuly 2002•v Contents List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii List of Tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix Preface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi About this Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii Additional Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii 1Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 2Windows 2000. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Driver Installation (First-Time Install). . . . . . . . . . . . . . . . . . . . . . 2-1 Driver Installation (Previous Driver Installed) . . . . . . . . . . . . . . . . . 2-6 Driver Uninstallation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14 Device Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17 Selecting Encryption Types. . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23 Infrastructure Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26 Ad Hoc Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28 TCP/IP Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29 D O N O T C O P Y PRELIMINARY vi•AR5001 STA User’s GuideAtheros Communications, Inc. vi•July 2002COMPANY CONFIDENTIAL 3Windows 98 Second Edition . . . . . . . . . . . . . . . . . . . . 3-1 Driver Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .…

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Atheros Communications, Inc. 529 Almanor Avenue Sunnyvale CA 94085 t 408 773 5200 f 408 773 9940 www.atheros.com Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 May 6th, 2002 To Whom It May Concern: This letter authorizes Compliance Engineering Services, Inc as Agent for Atheros Communications, Inc., to sign applications before the Commission and to make representations to the FCC on our behalf. Compliance Engineering Services, Inc is to receive and exchange data between our company and the Commission. This authorization is made pursuant to Section 2.911(c) of the FCC Rules and expires on May 6 th , 2003. I hereby certify on behalf of Atheros Communications, Inc. located at 529 Almanor Ave, Sunnyvale, CA 94085 ("Applicant") that neither Applicant nor any party to the application (officers, directors, and 5% shareholders) is subject to a denial of Federal benefits that includes FCC benefits pursuant to section 5301 of the Anti-Drug Abuse Act of 1988. 21 U.S.C. 853a. Sincerely, Michael Green Manager of Global Product Compliance

Atheros Communications, Inc. 529 Almanor Avenue Sunnyvale CA 94085 t 408 773 5200 f 408 773 9940 www.atheros.com Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 May 6th, 2002 Dear Examiner: I am writing to avoid the possibility of an inadvertent disclosure of proprietary information. The accompanying Form 731 is being filed with the commission on our behalf by a consulting and testing laborato ry. Included as exhibits with the enclosed application are block diagrams, schematics, and a detailed description of the theory of operation of the device. We ask that these portions (block diagrams, schematics, and theory of operation) of our application be withheld from public inspection as provided under FCC section 0.459. These documents contain details of the proprietary operation of product. These details are not readily discernible - even to technically sophisticated individuals - from our hardware and constitute trade secrets. We request therefore that these documents and this letter be segregated from the body of our evaluation report and withheld from public inspection. Thank you for your attention. Please let the undersigned know if the Commission disagrees with our position or requires further justification. Sincerely, Michael Green Manager of Global Product Compliance

Model AR5BCB-00021 This device complies with Part 15 of the FCC Rules and Canadian Standard RSS-210. Operation is subject to the following conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This Class B digital apparatus complies with Canada ICES-003. FCC ID: PPD-AR5BCB-00021 CANADA: © Atheros Communications, Inc. 2001 Label Dimensions and Placement FCCID: PPD-AR5BCB-00021 Label Dimensions = 2.48 x 1.55 in. Label Material = .002in TC/249 White Mylar Label Adhesive = Permanent Label Placement: On Bottom Center of PC Card

Model AR5BCB-00021 This device complies with Part 15 of the FCC Rules and Canadian Standard RSS-210. Operation is subject to the following conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This Class B digital apparatus complies with Canada ICES-003. FCC ID: PPD-AR5BCB-00021 CANADA: © Atheros Communications, Inc. 2001 Label Dimensions and Placement FCCID: PPD-AR5BCB-00021 Label Dimensions = 2.48 x 1.55 in. Label Material = .002in TC/249 White Mylar Label Adhesive = Permanent Label Placement: On Bottom Center of PC Card

SAR COMPLIANCE TESTING OF ATHEROS COMMUNICATIONS MODEL AR5BCB-00021 (FCC ID# PPD-AR5BCB-00021) CARDBUS CARD INSERTED INTO A LAPTOP COMPUTER May 14, 2002 Submitted to:Mr. Jason Zheng Atheros Communications 529 Almanor Avenue Sunnyvale, CA 94085-3512 Submitted by:Om P. Gandhi Professor of Electrical and Computer Engineering University of Utah 50 S Central Campus Dr., Rm. 3280 Salt Lake City, UT 84112-9206 SAR COMPLIANCE TESTING OF ATHEROS COMMUNICATIONS MODEL AR5BCB-00021 (FCC ID# PPD-AR5BCB-00021) CARDBUS CARD INSERTED INTO A LAPTOP COMPUTER I. Introduction The U.S. Federal Communications Commission (FCC) has adopted limits of human exposure to RF emissions from mobile and portable devices that are regulated by the FCC [1]. The FCC has also issued Supplement C (Edition 97-01) to OET Bulletin 65 [2] and a more recent version of the same [3] defining both the measurement and the computational procedures that should be followed for evaluating compliance of mobile and portable devices with FCC limits for human exposure to radiofrequency emissions. We have used the measurement procedure for SAR compliance testing of the Atheros Communications CardBus card (FCC ID: PPD-AR5BCB-00021) inserted into a laptop computer. A photograph of the unit with the CardBus card inserted into the laptop computer is given in Fig. 1. A picture of the Model AR5BCB-00021 CardBus card placed on the laptop is given in Fig. 2. The Atheros Model AR5BCB-00021 CardBus card operates with a nominal conducted RF power output of 21 dBm (126 mW) for the frequency band 5.18-5.825 GHz. For SAR measurements, two configurations of the wireless PC relative to the experimental phantom have been used: a. Since the wireless PC may possibly be placed on a user's lap where the RF antennas would be the closest to the body, a planar phantom model with inside dimensions 12" × 16.5" (30.5 × 41.9 cm) and a base thickness of 2.0 ± 0.2 mm (recommended in [3]) was used for SAR measurements and the wireless PC cards mounted in a portable computer (as in Fig. 1) pressed against the bottom of this phantom (see Fig. 3). b . For a bystander, the "end-on" SAR value is obtained for the PC and the card edge at 90° to the flat phantom with a spacing of 2.5 cm (see Fig. 4). 2 II. Experimental Measurements of SAR Distribution As aforementioned, the measurements of the SAR distributions for the Atheros Communications Model AR5BCB-00021 CardBus Card inserted into a laptop computer (as in Fig. 1), both for the "above-lap" and "end-on" positions, were done with a planar rectangular box phantom made of acrylic of inside dimensions 12" × 16.5" (30.5 × 41.9 cm) shown in Figs. 3 and 4 for "above-lap" and "end-on" positions, respectively. This box phantom of external dimensions 13" × 17.5" (33 × 44.5 cm) is filled with a tissue-simulant fluid up to a depth of 15 cm. As recommended in [3], the base thickness of the box phantom is 2.0 ± 0.2 mm (0.079"). As seen in Figs. 3 and 4, a 1" thick Styrofoam block is used under the base, except for the region of the wireless laptop to prevent bending of the 2 mm thin base. Also for the SAR testing for the "end- on" position, a separation of 1" (2.5 cm) from the end of the PC card to the bottom of the planar phantom is used. The tissue-simulant fluid uses a composition developed at the University of Utah which consists of 68.0% water, 31.0% sugar and 1% HEC. For this composition, we have measured the dielectric properties using a Hewlett Packard (HP) Model 85070B Dielectric Probe in conjunction with HP Model 8720C Network Analyzer (50 MHz-20 GHz). The measured dielectric properties at a mid band frequency of 5.30 GHz are as follows: ε r = 48.5 ± 1.7 and σ = 5.40 ± 0.08 S/m. From the FCC Supplement C [3], we obtain the desired dielectric properties to simulate the body tissue at 5.30 GHz to be ε r = 48.9 and σ = 5.42 S/m. Thus, the measured properties for the body- simulant fluid are close to the desired values. III. Calibration of the E-Field Probe As in some previously reported SAR measurements at 6 GHz [4], we have calibrated the Narda Model 8021 Miniature Broadband Electric Field Probe of tip diameter 4 mm (0.4 to 10 GHz) using a rectangular waveguide WR 159 that was filled with this body-simulant fluid at 5.30 GHz. By comparing the electric fields expected in the tissue from the analytical expressions of the waveguide theory, we obtain a calibration factor of 2.98 (mW/kg)/μV. This is considerably 3 larger than calibration factors of 0.39 and 0.565 (mW/kg)/μV previously reported for the same probe at 835 MHz and 1900 MHz, respectively [5]. This is to be expected since the sensitivity of the diodes used for the Narda Model 8021 Miniature Broadband Electric Field Probe of tip diameter 4 mm is likely to diminish with frequency. I V . The Measured SAR Distributions The SAR distributions were determined using the automated SAR measurement system developed at the University of Utah [5]. As described in [5], this SAR measurement system has been validated using a number of wireless telephones at 835 and 1900 MHz, respectively. The highest SAR region for each of the measurement frequencies (5.18, 5.32, 5.745, and 5.825 GHz) was identified in the first instance by using a coarser sampling with a step size of 8.0 mm over three overlapping areas for a total scan area of 8.0 × 9.6 cm. After identifying the region of the highest SAR, the SAR distribution was measured with a resolution of 2 mm in order to obtain the peak 1 cm 3 or 1-g SAR. As given in [5], the SAR measurements are performed at 4, 6, 8, 10, 12 mm height from the bottom surface of the body-simulant fluid. The SARs thus measured were extrapolated to obtain values at 1, 3, 5, 7 and 9 mm height and used to obtain 1-g SARs. The uncertainty analysis of the University of Utah SAR measurement system is given in Appendix A. The combined standard uncertainty is ± 8.3%. The SAR distributions measured for transmit frequencies of 5.18, 5.32, 5.745, and 5.845 GHz are given in Tables 1-…

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PROJECT: 02U1295 ATHEROS AR5BCB-00021 MPE CALCULATION for 1.5 dBi ANTENNA Formula used in the MPE Calculations: E^2/3770 = S, mW/cm2 Pwatts*Ggain = 10^(PdBm-30+GdBi)/10) E, V/m = (Pwatts*Ggain*30)^.5/d, meters d = ((Pwatts*G*30)/3770*S))^0.5 --------- (A) Since S (mW/cm2) =1.00 from 1.1310 Table 1 P (dBm) = 21.77 EUT output power G (dBi) = 1.50 EUT antenna gain Substitute these parameters into the A above, we have MPE safe distance d (cm) = 4.11 NOTE: For mobile or fixed location transmitters, minimum separation distance is 20 cm, even if calculations indicate MPE distance is less

234IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY, VOL. 41, NO. 3, AUGUST 1999 An Automated SAR Measurement System for Compliance Testing of Personal Wireless Devices Qishan Yu, Om P. Gandhi,Life Fellow, IEEE, Magnus Aronsson,Student Member, IEEE, and Ding Wu Abstract—An automated specific absorption rate (SAR) mea- surement system has been developed for compliance testing of personal wireless devices. Unlike other systems, this system uses a model with a lossy ear-shaped protrusion and the accuracy of this experimental setup has been checked by comparing the peak 1-g SAR’s for ten cellular telephones, five each at 835 and 1900 MHz, with the results obtained using a 15-tissue anatomically based model with the finite-difference time-domain (FDTD) numerical electromagnetic technique. The SAR measurement system uses a three-dimensional (3-D) stepper motor to move a Narda Model 8021 E-field probe to measure the SAR distribution inside a head- shaped tissue-simulant phantom near the radiating device. The head and neck part of the model with an ear-shaped protrusion of 3 mm thickness is made of a lossy outer shell of 5–7 mm thickness of epoxy laced with KCl solution. The phantom is filled with appropriate frequency-specific fluids with measured electrical properties (dielectric constant and conductivity) that are close to the average for gray and white matters of the brain at the center frequencies of interest (835 and 1900 MHz). The implantable E-field probe is calibrated using the FDTD- calculated SAR variations for a slab model at two commonly used frequencies, 835 and 1900 MHz and is checked to have good isotropic characteristics ( 0.23 dB) and a wide dynamic range (0.01–10 W/kg). The system is validated using a 223-mm- diameter sphere model. Peak 1-g SAR’s for ten telephones using different antennas are within 1 dB of those obtained using the FDTD numerical method for the anatomical model of the head and neck region. Index Terms—Experimental phantom with lossy ear, safety compliance testing, validation against computed SAR. I. INTRODUCTION T HE use of cellular telephones and mobile wireless com- munication systems has increased dramatically during the past few years. Meanwhile, there is public concern for safety of RF exposure from these devices. Since the RF exposure is quantified by the mass-normalized rate of electromagnetic energy absorption or the specific absorption rate (SAR), the United States Federal Communications Commission (FCC) requires that the SAR values of new personal wireless devices must meet the prescribed RF safety guidelines [1]. Further- more, since electromagnetic energy absorbed by the human head depends to a large extent on the antenna used for the personal wireless devices [2], knowledge of SAR distributions in the human head can also help the industry to design better antennas to improve the performance of the wireless transceivers. In this regard, we should note that 30–65% of Manuscript received March 10, 1998; revised April 26, 1999. The authors are with the Department of Electrical Engineering, University of Utah, Salt Lake City, UT 84112 USA. Publisher Item Identifier S 0018-9375(99)06718-6. the power radiated by the whip antennas used today is wasted by absorption in the human head and hand [2] and this could be reduced greatly. Recent dosimetric studies on the RF exposure to the human body from personal wireless devices have been carried out by both numerical simulation [3]–[5] and experimental measure- ments [6], [7]. Numerical methods using millimeter resolution anatomically based human body models and computer-aided design (CAD) files of cellular telephones can simulate the human body and the cellular phones in detail, respectively, thus providing highly accurate information about the electro- magnetic coupling of the radiating device to the human body [8]. But the numerical technique requires considerable com- putational resources (memory and computation time) for just one test condition of the device. To alleviate this problem, use of the expanding grid finite-difference time-domain (FDTD) method [9] together with the use of the truncated models of the head [10] has resulted in savings of memory requirements by factors in excess of 20, making it possible to compute the high- resolution SAR distributions using workstations instead of parallel computers [8]. Nevertheless, if a device is to be tested for several orientations relative to the head or slightly variable conditions of the relatively unshielded internal circuitry, an easy, fast experimental procedure with validated accuracy and repeatability is of interest. A major requirement of the experimental setup, however, is that the phantom model be designed such that it gives peak 1-g SAR’s that are in good agreement (within 1 dB) with the values obtained using anatomically based models. While none of the previously developed thin shell phantoms can make this claim in this paper, we present an automated SAR measurement system that meets this requirement and can, therefore, be used for compliance testing at both 835 and 1900 MHz. The system is fully automated by a three-dimensional (3-D) stepper motor system controlled by a computer, with a miniature implantable -field probe that is used to determine spatial SAR variations. Using an ear-shaped protrusion of 3 mm thickness, the head and neck part of the phantom model is made of a lossy shell of 5–7 mm thickness of epoxy laced with KCl solution to simulate the thickness of the human skull. This is important since most of the electromagnetic energy absorption for the region of the highest SAR for anatomically based models occurs either for the ear or the internal tissues beyond the skull, which is on the order of 5–7 mm thick. This and the upper part of the torso are filled with a frequency specific fluid with measured electrical properties (dielectric constant and conductivity) close to the average properties of the brain 0018–9375/99$10.001…

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Operation and Control of Atheros Communications AR5BCB-00021: The Atheros Communications AR5BCB-00021 cardbus card was inserted into a host laptop for SAR testing. This laptop was loaded with Atheros Radio Test (ART) software that enabled control of the device-under-test via menu driven keyboard commands. Device operating conditions that are controlled by the software include channel frequency, data rate, output power, and duty cycle. During the SAR test, the device- under-test was configured for a 126mW (21dBm) output power, 99% duty cycle, 6Mbps data rate. The card’s closed loop power control circuit was enabled by the software to set and maintain a constant 21dBm output power level for each of the tested channel frequencies.

FCC CFR47 PART 15 SUBPART E CERTIFICATION TEST REPORT FOR ATHEROS COMMUNICATIONS, INC. 802.11a WIRELESS LAN CARDBUS CARD MODEL NUMBER: AR5BCB-00021 BRAND NAME: ATHEROS FCC ID: PPD-AR5BCB-00021 REPORT NUMBER: 02U1295 ISSUE DATE: JULY 11, 2002 Prepared for ATHEROS COMMUNICATIONS, INC. 529 ALMANOR AVENUE SUNNYVALE, CA 94085-3512 USA Prepared by COMPLIANCE CERTIFICATION SERVICES 561F MONTEREY ROAD, MORGAN HILL, CA 95037, USA TEL: (408) 463-0885 FAX: (408) 463-0888 REPORT NO: 02U1295-1 DATE: JULY 11, 2002 EUT: 802.11a WIRELESS LAN CARDBUS CARD FCC ID: PPD-AR5BCB-00021 Page 2 of 64 COMPLIANCE CERTIFICATION SERVICES DOCUMENT NO: CCSUP4031A 561F MONTEREY ROAD, MORGAN HILL, CA 95037 USA TEL: (408) 463-0885 FAX: (408) 463-0888 This report shall not be reproduced except in full, without the written approval of CCS. This document may be altered or revised by Compliance Certification Services personnel only, and shall be noted in the revision section of the document. TABLE OF CONTENTS 1. TEST RESULT CERTIFICATION.................................................................................................3 2. EUT DESCRIPTION.........................................................................................................................4 3. TEST METHODOLOGY..................................................................................................................5 4. FACILITIES AND ACCREDITATION..........................................................................................5 4.1. FACILITIES AND EQUIPMENT.................................................................................................5 4.2. LABORATORY ACCREDITATIONS AND LISTINGS.................................................................5 4.3. TABLE OF ACCREDITATIONS AND LISTINGS........................................................................6 5. CALIBRATION AND UNCERTAINTY.........................................................................................7 5.1. MEASURING INSTRUMENT CALIBRATION............................................................................7 5.2. MEASUREMENT UNCERTAINTY..............................................................................................7 5.3. TEST AND MEASUREMENT EQUIPMENT...............................................................................8 6. SETUP OF EQUIPMENT UNDER TEST.......................................................................................9 7. APPLICABLE RULES....................................................................................................................12 8. TEST SETUP, PROCEDURE AND RESULT..............................................................................17 8.1. EMISSION BANDWIDTH..........................................................................................................17 8.2. PEAK POWER............................................................................................................................21 8.3. PEAK POWER SPECTRAL DENSITY.......................................................................................25 8.4. PEAK EXCURSION...................................................................................................................29 8.5. DISCONTINUE TRANSMITTING WITH ABSENCE OF DATA...............................................33 8.6. TYPE OF ANTENNA..................................................................................................................33 8.7. RADIO FREQUENCY EXPOSURE (MPE)...............................................................................34 8.8. FREQUENCY STABILITY..........................................................................................................35 8.9. UNDESIRABLE EMISSION – CONDUCTED MEASUREMENTS...........................................36 8.10. UNDESIRABLE EMISSION – RADIATED MEASUREMENTS................................................46 8.11. POWER LINE CONDUCTED EMISSION.................................................................................59 8.12. SETUP PHOTOS........................................................................................................................61 REPORT NO: 02U1295-1 DATE: JULY 11, 2002 EUT: 802.11a WIRELESS LAN CARDBUS CARD FCC ID: PPD-AR5BCB-00021 Page 3 of 64 COMPLIANCE CERTIFICATION SERVICES DOCUMENT NO: CCSUP4031A 561F MONTEREY ROAD, MORGAN HILL, CA 95037 USA TEL: (408) 463-0885 FAX: (408) 463-0888 This report shall not be reproduced except in full, without the written approval of CCS. This document may be altered or revised by Compliance Certification Services personnel only, and shall be noted in the revision section of the document. 1. TEST RESULT CERTIFICATION COMPANY NAME: ATHEROS C0MMUNICATIONS, INC. 529 ALMANOR AVENUE SUNNYVALE, CA 94085-3512 USA CONTACT PERSON: MICHAEL ROBINSON TELPHONE NO: (408) 773-5200 EUT DESCRIPTION: 802.11a WIRELESS LAN CARDBUS CARD MODEL NUMBER: AR5BCB-00021 DATE TESTED: MAY 7, 2002 – MAY 15, 2002 TYPE OF EQUIPMENT INTENTIONAL RADIATOR EQUIPMENT TYPE 5.15 – 5.35 GHz TRANSCEIVER * MEASUREMENT PROCEDURE ANSI 63.4 / 1992, TIA/EIA 603 PROCEDURE CERTIFICATION FCC RULE CFR 47 PART 15.E * The 5.2 GHz band is applicable to this report; another band of operation (5.8 GHz) is documented in a separate report. Compliance Certification Services, Inc. tested the above equipment for compliance with the requirements set forth in CFR 47, PART 15, Subpart E. The equipment in the configuration described in this report, shows the measured emission levels emanating from the equipment do not exceed the specified limit. Note: This document reports the conditions under which testing was conducted and results of tests performed. This document may not be altered or revised in any way unless done so by Compliance Certification Services and all revisions are duly noted in the revisions section. Any alteration of this document not carried out by Compliance Certification Services will constitute fraud and shall…

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REPORT NO: 02U1295-1 DATE: JULY 11, 2002 EUT: 802.11a WIRELESS LAN CARDBUS CARD FCC ID: PPD-AR5BCB-00021 Page 36 of 64 COMPLIANCE CERTIFICATION SERVICES DOCUMENT NO: CCSUP4031A 561F MONTEREY ROAD, MORGAN HILL, CA 95037 USA TEL: (408) 463-0885 FAX: (408) 463-0888 This report shall not be reproduced except in full, without the written approval of CCS. This document may be altered or revised by Compliance Certification Services personnel only, and shall be noted in the revision section of the document. 8.9. UNDESIRABLE EMISSION – CONDUCTED MEASUREMENTS Conducted RF measurements of the transmitter output were made at the band edges. Also, conducted RF measurements of the transmitter over the 30 MHz to 26.5 GHz band were made in order to identify any spurious signals that require further investigation or measurements on the radiated emissions site. TEST SETUP TEST PROCEDURE The transmitter output is connected to the spectrum analyzer. The resolution bandwidth is set…

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