RF exposure

FCC ID: 2AH3ORCE20

RF Exposure Info

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FCCID_3950946

RF Exposure Report

FCC-ID: 2AH3ORCE20

RF Exposure Measurement

The limit for Maximum Permissible Exposure (MPE) specified in FCC 1.1310 is followed. The
gain of the antennas used in the product is extracted from the Antenna data sheets provided
and also the maximum total power input to the antenna is measured. Through the Friis
transmission formula and the maximum gain of the antenna, we can calculate the distance,
away from the product, where the limit of MPE is reached.
Although the Friis Transmission formula is far field assumption, the calculated result of that is
an over-prediction for near field power density. It is taken as worst case to specify the safety
range.

RF Exposure Limit

According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the
environmental impact of the human exposure to radio-frequency (RF) radiation as specified in
1.1307 (b)

Frequency Range Electric Field Magnetic Field Power Density
(MHz) Strength (V/m) Strength (A/m) (mW/cm²)
Limits for Occupational / controlled Exposures
300 - 1500 -- -- F/300
1500 – 100000 -- -- 5.0
Limits for General population / Uncontrolled Exposure
300 - 1500 -- -- F/1500
1500 – 100000 -- -- 1.0

Limits for Maximum Permissible Exposure (MPE)

F= Frequency in MHz

Friss Formula

Friss 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 the center of radiator in cm

If we know the maximum gain of the antenna and the total output power to the antenna,
through calculation, we will know MPE value at distance 20cm.

EUT Operation condition

EUT was enabled to transmit and receive at lowest, middle and highest channels.

Classification

The antenna of this product, under normal use condition, is at least 20cm away from the body of the
user. Warning statement to the user for keeping at least 20cm or more separation distance from the
antenna should be included in the User manual. So, this device is classified as Mobile device.
BT4.1+EDR
Mode 2402-2480MHz
Detector PEAK
GFSK 8±1dBm
π/4-DQPSK 7±1dBm
8DPSK 7±1dBm

ANT Gain (G)
Antenna gain :4.5dBi (gain of antenna in linear scale=2.82)

Output
Output
ANT Gain(gain Channel Power to Power
Power to Limit
Protocol of antenna in Frequency Antenna Antenna
Density
(mW/cm²)
linear scale) (MHz) (dBm)
(mW)
(mW/cm²)

GFSK 2.82 2480 9 7.9433 0.00446 1
π/4-DQPSK 2.82 2480 8 6.3096 0.00354 1
8DPSK 2.82 2480 8 6.3096 0.00354 1

BT4.1
Mode 2402-2480MHz
Detector PEAK
GFSK 6±1dBm
ANT Gain (G)
Antenna gain :4.5dBi (gain of antenna in linear scale=2.82)

Output
Output
ANT Gain(gain Channel Power to Power
Power to Limit
Protocol of antenna in Frequency Antenna Antenna
Density
(mW/cm²)
linear scale) (MHz) (dBm)
(mW)
(mW/cm²)

GFSK 2.82 2480 7 5.0119 0.00281 1

2.4G WIFI
Mode 802.11b/g/n20:
2412-2462MHz
802.11n40:
2422-2452MHz
Detector PEAK
802.11b 15±1dBm
802.11g 16±1dBm
802.11n20 18±1dBm

ANT Gain (G)
Antenna number: 2
Antenna A gain : 4.5dBi
Antenna B gain : 4.5dBi
MIMO technology Directional gain= 7.51dBi
(gain of antenna in linear scale=5.64)

Output
Output
ANT Gain(gain Channel Power to Power
Power to Limit
Protocol of antenna in Frequency Antenna
Antenna
Density
(mW/cm²)
linear scale) (MHz) (dBm)
(mW)
(mW/cm²)

802.11 b 5.64 2437 16 39.8107 0.04469 1
802.11 g 5.64 2437 17 50.1187 0.05626 1
802.11 n20 5.64 2462 19 79.4328 0.08917 1

5G WIFI
ANT Gain (G)
Mode IEEE 802.11a/ n/ac(HT20)
5.180GHz-5.240GHz
IEEE 802.11n/ac(HT40)
5.190GHz-5.230GHz
IEEE 802.11ac(HT80) 5.210GHz
Detector PEAK
802.11a/n/ac(HT20) 15±1dBm
802.11 n/ac(HT40) 13±1dBm
802.11 ac(HT80) 12±1dBm

ANT Gain (G)
Antenna number: 2
Antenna A gain : 4.5dBi
Antenna B gain : 4.5dBi
MIMO technology Directional gain= 7.51dBi
(gain of antenna in linear scale=5.64)

ANT Channel Output Output
Power
Gain(gain of Frequenc Power to Power to Limit
Protocol Antenna Density
antenna in y Antenna (mW/cm² )
(dBm) (mW/cm²)
linear (MHz) (mW)
802.11 scale)
a/n/ac(HT20)
7.51 5200 16 39.8107 0.05951 1

802.11
n/ac(HT40)
7.51 5230 14 25.1189 0.03755 1

802.11
ac(HT80)
7.51 5210 13 19.9526 0.02983 1

5G WIFI
ANT Gain (G)
Mode IEEE 802.11a/ n/ac(HT20)
5.260GHz-5.320GHz
IEEE 802.11n/ac(HT40)
5.270GHz-5.310GHz
IEEE 802.11ac(HT80) 5.290GHz
Detector PEAK
802.11a/n/ac(HT20) 13±1dBm
802.11 n/ac(HT40) 12±1dBm
802.11 ac(HT80) 11±1dBm

ANT Gain (G)
Antenna number: 2
Antenna A gain : 4.5dBi
Antenna B gain : 4.5dBi
MIMO technology Directional gain= 7.51dBi
(gain of antenna in linear scale=5.64)
ANT Output Output
Channel Power to Power
Gain(gain of Power to Limit
Protocol Frequency Antenna Density
antenna in Antenna (mW/cm²)
(MHz) (dBm) (mW/cm²)
linear (mW)
802.11 scale)
a/n/ac(HT20)
7.51 5320 14 25.1189 0.03755 1

802.11
n/ac(HT40)
7.51 5310 13 19.9526 0.02983 1

802.11 ac(HT80) 7.51 5290 12 15.8489 0.02369 1

5G WIFI
ANT Gain (G)
Mode IEEE 802.11a/ n/ac(HT20)
5.550GHz-5.700GHz
IEEE 802.11n/ac(HT40)
5.510GHz-5.670GHz
IEEE 802.11ac(HT80)
5.530GHz-5.610GHz
Detector PEAK
802.11a/n/ac(HT20) 14±1dBm
802.11 n/ac(HT40) 13±1dBm
802.11 ac(HT80) 10±1dBm

ANT Gain (G)
Antenna number: 2
Antenna A gain : 4.5dBi
Antenna B gain : 4.5dBi
MIMO technology Directional gain= 7.51dBi
(gain of antenna in linear scale=5.64

Output
Power to
Output
ANT Gain(gain Channel Antenna Power
Power to Limit
Protocol of antenna in Frequency (dBm) Density
Antenna (mW/cm²)
linear scale) (MHz) (mW/cm²)
(mW)

802.11
7.51 5500 15 31.6228 0.04727 1
a/n/ac(HT20)
802.11
7.51 5510 14 25.1189 0.03755 1
n/ac(HT40)

802.11
7.51 5530 11 12.5893 0.01882 1
ac(HT80)

5G WIFI
ANT Gain (G)
Mode IEEE 802.11a/
n/ac(HT20)5.745GHz-5.825GHz
IEEE 802.11a/
n/ac(HT40)5.755GHz-5.795GHz
IEEE 802.11ac(HT80) 5.775GHz
Detector PEAK
802.11
12±1dBm
a/n/ac(HT20)
802.11
10±1dBm
n/ac(HT40)
802.11
10±1dBm
ac(HT80)

ANT Gain (G)
Antenna number: 2
Antenna A gain : 4.5dBi
Antenna B gain : 4.5dBi
MIMO technology Directional gain= 7.51dBi
(gain of antenna in linear scale=5.64)

Output Output
ANT Gain(gain Channel Power to Power
Power to Limit
Protocol of antenna in Frequency Antenna Antenna Density (mW/cm²)
linear scale) (MHz) (dBm) (mW)
(mW/cm²)

802.11
a/n/ac(HT20)
7.51 5745 13 19.9526 0.02983 1
802.11
n/ac(HT40)
7.51 5755 11 12.5893 0.01882 1

802.11
ac(HT80)
7.51 5775 11 12.5893 0.01882 1

Document Created: 2018-07-31 03:56:22
Document Modified: 2018-07-31 03:56:22

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