MPE

FCC ID: 2AEB4ALT01

RF Exposure Info

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FCCID_3600777

FCC ID: 2AEB4ALT01 RF Exposure Evaluation Limits 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) Electric field Frequency range Magnetic field strength Power density Averaging time strength 2 (MHz) (A/m) (mW/cm ) (minutes) (V/m) (A) Limits for Occupational/Controlled Exposures 0.3–3.0 614 1.63 *(100) 6 2 3.0–30 1842/f 4.89/f *(900/f ) 6 30–300 61.4 0.163 1.0 6 300–1500 f/300 6 1500–100,000 5 6 (B) Limits for General Population/Uncontrolled Exposure 0.3–1.34 614 1.63 *(100) 30 2 1.34–30 824/f 2.19/f *(180/f ) 30 30–300 27.5 0.073 0.2 30 300–1500 f/1500 30 1500–100,000 1.0 30 f = frequency in MHz 2 Friis transmission formula: Pd = (Pout*G)/(4*pi*r ) Where 2 Pd = power density in mW/cm , 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 2 Pd id the limit of MPE, 1 mW/cm . 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. .

GTS Test Result of RF Exposure Evaluation LTE mode Frequency OUtpUt power Output power Power Band q t Density at Limit Result o antenna esu (MHz) to R=20cm (mW/cm?) ({mW) 2 antenna (dBm) (mW/cm") LTE Band 2 1880.0 23.05 201.8266 0.07140 1.00 PASS LTE Band a 1712.5 23.00 199.5262 0.07058 1.00 PASS LTE Band 12 107.5 23.05 201.8366 0.04403 0.47 PASS Remark: antenna gain=2.5dBi(Band 2), 2.5dBi(Band 4), 0.4dBi(Band 12) WCDMA mode Frequency Output power Qutput power Power Band ; : Density at Limit Result o antenna (MHz) to R=20cm (mW/cm?) esu ({mW) 2 antenna (dBm) (mW/cm") WCDMA 1880.0 22.46 4 pass Band 11 176.1976 0.06233 .00 WCDMA 836.6 22.52 Band V 178.6488 0.03897 0.56 PASS Remark: antenna gain= WCDMA Band II: 2.5¢Bi, WCDMA Band V: 0.40dBi


Document Created: 2017-09-12 09:37:32
Document Modified: 2017-09-12 09:37:32
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