Installation Guide

Page 6 of 9
• When antenna is installed in the typical notebook/Netbook/laptop computer platform,
the antenna cable shall be positioned away from antenna elements to conform to
configuration tested for compliance.
• When the antennas are installed in the display section of notebook/Netbook/Laptop
computer platform, the display section shall not have metallic components and material
that can influence or change the operating and exposure characteristics of the antennas.
If any one of condition listed above can not comply, please consult with Atheros regulatory
contact person to determine the applicable equipment authorization procedure before
marketing the host device.
Simultaneous transmission of Radio Module with Other Integrated or
Plug-In Radios
Based upon FCC Knowledge Database publication number 616217 D03 (Supplement)
https://fjallfoss.fcc.gov/kdb/GetAttachment.html?id=30257, when there are multiple radios
installed in a host device, RF exposure transmitting assessment shall be performed to determine
the necessary application and test requirements. Certain criteria can be used in determine the
requirement for simultaneous SAR evaluation and whether Class I or Class II permissive
change may apply. A brief summary of the procedures is provided below. OEM integrators
must consult the actual FCC KDB 616217 Supplement document for details:
• Identify all possible combinations of simultaneous transmission configurations for all
transmitters and antennas installed in the display screen and keyboard of the intended
host computer configurations and provide the following information:
o Antenna-to-antenna separation distance
o Antenna-to-user separation distance
• Transmitters/antennas operating from external card slots and/or connectors of the host
computers must be more than 5 cm from any simultaneous transmitting antennas
• If simultaneous transmission radio/module is installed in the host as portable device ( <
20 cm to the body of user) , determine the highest 1-g SAR value of each portable radio
module for applicable simultaneous transmission operating modes and configurations.
• If simultaneous radio is installed in the host as mobile device (> 20 cm to the body of
user) , determine the MPE (power density) according to the highest output power, ,
antenna gain and antenna-to-user separation distance in each frequency band.
• Determine the antenna to antenna separation distances as required for the conditions
below
a) When the [(∑ of the highest measured 1-g SAR for each portable transmitter/antenna
included in the simultaneous transmission configuration) / 1.6 W/kg] + ∑ of [(the
highest MPE for each mobile transmitter/antenna included in the simultaneous
transmission configuration) / (the corresponding MPE limit)] < 1; (where: ∑ excludes
antennas that do not require SAR evaluation, the corresponding MPE limits based upon
frequency band can be found at table 1 of section 1.1310 of CFR 47:
http://ecfr.gpoaccess.gov/cgi/t/text/text-
idx?c=ecfr&sid=788a1f4d7395e22ffa71dc3905fb2f10&rgn=div8&view=text&node=47:1.0
.1.1.2.9.193.10&idno=47)
or