MPE Mobile Devices

FCC ID: 2AEB4ALV01

RF Exposure Info

Download: PDF
FCCID_3600468

FCC ID: 2AEB4ALV01 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. .

Test Result of RF Exposure Evaluation LTE mode Power Density Output power to Output power to Limit Band Frequency(MHz) at R=20cm 2 Result antenna (dBm) antenna (mW) 2 (mW/cm ) (mW/cm ) LTE Band 1754.3MHz 23.28 212.8139 0.07529 1.00 PASS 4 LTE Band 784.5MHz 23.33 215.2782 0.03817 0.52 PASS 13 Remark: antenna gain=2.5dBi(Band 4), -0.5dBi(Band 4)


Document Created: 2017-09-12 09:34:56
Document Modified: 2017-09-12 09:34:56
© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC