RF exposure report

FCC ID: NLMTRM410S

RF Exposure Info

Download: PDF
FCCID_4174275

RF exposure According to FCC part 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 (㎒) strength(V/m) strength (A/m) (㎽/㎠) (A) Limits for Occupational / Control Exposures 300 – 1 500 -- -- f/300 6 1 500 - 100000 -- -- 5 6 (B) Limits for General Population / Uncontrol Exposures 300 – 1 500 -- -- f/1500 6 1 500 – 100 000 -- -- 1 30 f= frequency in ㎒ Friis transmission formula: Pd = (Pout×G)/(4×pi×R2) Where, Pd = power density in ㎽/㎠ Pout = output power to antenna in ㎽ G = gain of antenna in linear scale Pi = 3.1416 R = distance between observation point and center of the radiator in cm Pd the limit of MPE, 1 ㎽/㎠. 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 where the MPE limit is reached. Results - Worst case - 5.2G Max tune-up Antenna Power density Limit Operation mode Average power gain (㏈i) at 20 ㎝(㎽/㎠) (㎽/㎠) (㏈m) 802.11ac(VHT20) SISO 9.00 2.72 0.00296 1 802.11ac(VHT40) SISO 7.50 2.72 0.00209 1 802.11ac(VHT80) SISO 8.00 2.72 0.00235 1 - 5.3G Max tune-up Antenna Power density Limit Operation mode Average power gain (㏈i) at 20 ㎝(㎽/㎠) (㎽/㎠) (㏈m) 802.11ac(VHT20) SISO 7.50 2.72 0.00209 1 802.11ac(VHT40) SISO 7.00 2.72 0.00187 1 802.11ac(VHT80) SISO 6.50 2.72 0.00166 1

- 5.5G Max tune-up Antenna Power density Limit Operation mode Average power gain (㏈i) at 20 ㎝(㎽/㎠) (㎽/㎠) (㏈m) 802.11ac(VHT20) SISO 8.50 3.45 0.00312 1 802.11ac(VHT40) SISO 8.50 3.45 0.00312 1 802.11ac(VHT80) SISO 7.50 3.45 0.00248 1 - 5.8G Max tune-up Antenna Power density Limit Operation mode Average power gain (㏈i) at 20 ㎝(㎽/㎠) (㎽/㎠) (㏈m) 802.11ac(VHT20) SISO 11.00 5.63 0.00916 1 802.11ac(VHT40) SISO 11.00 5.63 0.00916 1 802.11ac(VHT80) SISO 10.50 5.63 0.00816 1


Document Created: 2019-03-25 02:32:57
Document Modified: 2019-03-25 02:32:57
© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC