RF Exposure Report

FCC ID: AHLALP

RF Exposure Info

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FCCID_2377369

ID: AHLALP

1. Maximum Permissible Exposure (MPE)

Standard Applicable
According to §1.1307(b)(1), systems operating under the provisions of this section shall
be operated in a manner that ensure that the public is not exposed to radio frequency
energy level in excess of the Commission’s guideline.

This is a Mobile device, the MPE is required.

According to §1.1310 and §2.1091 RF exposure is calculated.

Limits for Maximum Permissive Exposure (MPE)

Frequency Range Electric Field Magnetic Field Power Density Averaging Time
(MHz) Strength (V/m) Strength (A/m) (mW/cm2) (minute)
Limits for General Population/Uncontrolled Exposure
0.3-1.34 614 1.63 *(100) 30
1.34-30 824/f 2.19/f *(180/f2 ) 30
30-300 27.5 0.073 0.2 30
300-1500 / / F/1500 30
1500-15000 / / 1.0 30

F = frequency in MHz
* = Plane-wave equipment power density

ID: AHLALP

Maximum Permissible Exposure (MPE) Evaluation

2.4GHz mode:
The worst case of Average power: refer to FCC test report for detail measurement date.
Power measurement:
802.11b
Cable loss = 0 Output Power Limit
CH Frequency Detector (dBm)
(MHz) PK AV
(dBm) (dBm)
1 2412 14.98 12.47
6 2437 14.83 12.32 30
11 2462 14.79 12.34
Prediction of MPE limit at a given distance
Equation from page 18 of OET Bulletin 65, Edition 97-01
S=PG/4πR2
Where: S = Power density
P = Power input to antenna
G = Power gain of the antenna in the direction of interest relative to an isotropic
radiator
R = Distance to the center of radiation of the antenna

Maximum peak output power at antenna input terminal: 12.47 (dBm)
Maximum peak output power at antenna input terminal: 17.66037821 (mW)
Duty cycle: 100 (%)
Maximum Pav : 17.66037821 (mW)
Antenna gain (typical): 5.65 (dBi)
Maximum antenna gain: 3.672823005 (numeric)
Prediction distance: 20 (cm)
Prediction frequency: 2412 (MHz)

MPE limit for uncontrolled exposure at prediction 1 (mW/cm2)
Power density at predication frequency at 20 (cm) 0.0129107 (mW/cm^2)
Measurement Result
The predicted power density level at 20 cm is 0.0129 mW/cm2. This is below the
uncontrolled exposure limit of 1 mW/cm2 at 2412MHz.

ID: AHLALP

5150MHz – 5250MHz Mode:
The worst case of Average power N HT20 mode: refer to FCC test report for detail
measurement date.

Power measurement:
3*3 MIMO
Output Chain (dBm)Combine
Mode Freq(MHz) channel Chain Chain Output Power Limit(dBm) Result
chain B
A C (dBm)
5180 36 6.53 6.77 6.41 11.34 16.98 Pass
N HT20 5200 40 6.46 6.57 6.3 11.22 16.98 Pass
5240 48 6.73 6.56 6.41 11.34 16.98 Pass
Prediction of MPE limit at a given distance
Equation from page 18 of OET Bulletin 65, Edition 97-01
S=PG/4πR2
Where: S = Power density
P = Power input to antenna
G = Power gain of the antenna in the direction of interest relative to an isotropic
radiator
R = Distance to the center of radiation of the antenna

Maximum peak output power at antenna input terminal: 11.34 (dBm)
Maximum peak output power at antenna input terminal: 13.61444682 (mW)
Duty cycle: 100 (%)
Maximum Pav : 13.61444682 (mW)
Antenna gain (typical): 5.83 (dBi)
Maximum antenna gain: 3.828247433 (numeric)
Prediction distance: 20 (cm)
Prediction frequency: 5180 (MHz)

MPE limit for uncontrolled exposure at prediction frequency: 1 (mW/cm2)
Power density at predication frequency at 20 (cm) distance 0.0103741 (mW/cm^2)

Measurement Result
The predicted power density level at 20 cm is 0.0104mW/cm2. This is below the
uncontrolled exposure limit of 1 mW/cm2 at 5180MHz.

ID: AHLALP

5725MHz – 5850MHz Mode:
The worst case of Average power N HT40 mode: refer to FCC test report for detail
measurement date.

Power measurement:
3*3 MIMO
Output Chain (dBm) Combine
Mode Freq(MHz) channel Chain chain Chain Output Power Limit(dBm) Result
A B C (dBm)
5755 151 6.72 6.74 6.55 11.44 30
N HT40 5775 155 6.6 6.35 6.59 11.29 30 Pass
5815 163 6.62 6.44 6.56 11.31 30 Pass
Prediction of MPE limit at a given distance
Equation from page 18 of OET Bulletin 65, Edition 97-01
S=PG/4πR2
Where: S = Power density
P = Power input to antenna
G = Power gain of the antenna in the direction of interest relative to an isotropic
radiator
R = Distance to the center of radiation of the antenna

Maximum peak output power at antenna input terminal: 11.44 (dBm)
Maximum peak output power at antenna input terminal: 13.93156803 (mW)
Duty cycle: 100 (%)
Maximum Pav : 13.93156803 (mW)
Antenna gain (typical): 5.83 (dBi)
Maximum antenna gain: 3.828247433 (numeric)
Prediction distance: 20 (cm)
Prediction frequency: 5755 (MHz)

MPE limit for uncontrolled exposure at prediction 1 (mW/cm2)
Power density at predication frequency at 20 (cm) 0.0106157 (mW/cm^2)
Measurement Result
The predicted power density level at 20 cm is 0.0106mW/cm2. This is below the
uncontrolled exposure limit of 1 mW/cm2 at 5755MHz.

ID: AHLALP

Zigbee and Z-Wave mode: both of Zigbee and Z-wave meet FCC 15.249 requirement, the
MPE and SAR is not required.

Document Created: 2019-10-16 17:32:08
Document Modified: 2019-10-16 17:32:08

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