RF exposure info

FCC ID: KA2HPW310AVA1

RF Exposure Info

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FCCID_1827859

Report No. 128260R-RF-US-Exp RF Exposure Evaluation declaration Product Name ： Powerline AV+ Wireless N Mini Extender Model No. ： DHP-W310AV FCC ID. ： KA2HPW310AVA1 Applicant : D-Link Corporation Address : No.289, Sinhu 3rd Rd., Neihu District, Taipei City 114, Taiwan, R.O.C. Date of Receipt : 2012/08/13 Date of Declaration : 2012/09/20 Report No. : 128260R-RF-US-Exp Report Version : V1.0 The declaration results relate only to the samples calculated. The declaration shall not be reproduced except in full without the written approval of QuieTek Corporation. Page: 1 of 4

Report No. 128260R-RF-US-Exp 1. RF Exposure Evaluation 1.1. Limits According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency (RF) radiation as specified in 1.1307(b) LIMITS FOR MAXIMUM PERMISSIBLE EXPOSURE (MPE) Frequency Range Electric Field Magnetic Field Power Density Average Time 2 (MHz) Strength (V/m) Strength (A/m) (mW/cm ) (Minutes) (A) Limits for Occupational/ Control Exposures 300-1500 -- -- F/300 6 1500-100,000 -- -- 5 6 (B) Limits for General Population/ Uncontrolled Exposures 300-1500 -- -- F/1500 6 1500-100,000 -- -- 1 30 F= Frequency in MHz Friis Formula Friis transmission formula: Pd = (Pout*G)/(4*pi*r2) Where Pd = power density in mW/cm2 Pout = output power to antenna in mW G = gain of antenna in linear scale Pi = 3.1416 R = distance between observation point and center of the radiator in cm Pd id the limit of MPE, 1 mW/cm2 . If we know the maximum gain of the antenna and the total power input to the antenna, through the calculation, we will know the distance r where the MPE limit is reached. 1.2. Test Procedure Software provided by client enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. The temperature and related humidity: 18℃and 78％ RH. Page: 2 of 4

Report No. 128260R-RF-US-Exp 1.3. Test Result of RF Exposure Evaluation Product Powerline AV+ Wireless N Mini Extender Test Mode Transmit Test Condition RF Exposure Evaluation Antenna Gain Antenna Gain: The maximum Gain measured in fully anechoic chamber is 1.5dBi or 1.41 in linear scale. Output Power into Antenna & RF Exposure Evaluation Distance: IEEE 802.11b WLAN Function Channel Frequency Output Power to Antenna Power Density at R = 20 cm Channel (MHz) (mW) (mW/cm2) 1 2412 18.41 0.0052 6 2437 18.07 0.0051 11 2462 17.30 0.0049 IEEE 802.11g WLAN Function Channel Frequency Output Power to Antenna Power Density at R = 20 cm Channel (MHz) (mW) (mW/cm2) 1 2412 22.08 0.0062 6 2437 21.58 0.0061 11 2462 20.09 0.0056 The power density Pd (4th column) at a distance of 20 cm calculated from the Friis transmission formula is far below the limit of 1 mW/cm2. Page: 3 of 4

Report No. 128260R-RF-US-Exp Product Powerline AV+ Wireless N Mini Extender Test Mode Transmit Test Condition RF Exposure Evaluation Antenna Gain Antenna Gain: The maximum Gain measured in fully anechoic chamber is 1.5dBi or 1.41 in linear scale. Output Power into Antenna & RF Exposure Evaluation Distance: IEEE 802.11n (20MHz) ANT 0+1 WLAN Function Channel Frequency Output Power to Antenna Power Density at R = 20 cm Channel (MHz) (mW) (mW/cm2) 1 2412 39.36 0.0110 6 2437 35.08 0.0098 11 2462 38.11 0.0107 IEEE 802.11n (40MHz) ANT 0+1 WLAN Function Channel Frequency Output Power to Antenna Power Density at R = 20 cm Channel (MHz) (mW) (mW/cm2) 3 2422 36.14 0.0101 6 2437 35.56 0.0100 9 2452 33.81 0.0095 The power density Pd (4th column) at a distance of 20 cm calculated from the Friis transmission formula is far below the limit of 1 mW/cm2. Page: 4 of 4


Document Created: 2012-10-26 13:55:59
Document Modified: 2012-10-26 13:55:59
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