RF EXPO INFO 1

FCC ID: ZJU-E19C05

RF Exposure Info

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FCCID_4487970

Contain LTE single module

Contains FCC ID:XMR201605EC25A

So MPE report of LTE part is from FCC ID:XMR201605EC25A

Bay Area Compliance Laboratories Corp.(Taiwan) Report No.: RKS160908001-00A

FCC §1.1310& §2.1091 –MAXIMUM PERMISSIBLE EXPOSURE (MPE)

Applicable Standard
According to subpart§2.1091and subpart §1.1310, systems operating under the provisions of this section
shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in
excess of the Commission’s guidelines.

Limits for Maximum Permissible Exposure (MPE) (§1.1310, §2.1091)

(B) Limits for General Population/Uncontrolled Exposure

Frequency Range Electric Field Magnetic Field Power Density Averaging Time
(MHz) Strength (V/m) Strength (A/m) (mW/cm2) (minutes)

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
1500-100,000 / / 1.0 30

f = frequency in MHz; * = Plane-wave equivalent power density;

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

Calculated Formulary:
Predication of MPE limit at a given distance
S = PG/4πR² = power density (in appropriate units, e.g. mW/cm2);
P = power input to the antenna (in appropriate units, e.g., mW);
G = power gain of the antenna in the direction of interest relative to an isotropic radiator, the power gain
factor, is normally numeric gain;
R = distance to the center of radiation of the antenna (appropriate units, e.g., cm);

Base on ERP/EIRP Calculated Data:

Max Turn-up Power ERP/EIRP Limit Max Antenna Gain
Mode
(dBm) (dBm) (dBi)

WCDMA (Band V) 23.5 38.45 14.95

WCDMA (Band II) 23.5 33 9.5

WCDMA (Band IV) 23.5 30 6.5
LTE
24 33 9.0
(Band II)
LTE
24 30 6.0
(Band Ⅳ)
LTE
24 34.77 10.77
(Band Ⅻ)

FCC Part 27 Page 9 of 34

Bay Area Compliance Laboratories Corp.(Taiwan) Report No.: RKS160908001-00A

To meet MPE requirement, the allowed maximal gain for each band is below:

Frequency Antenna Gain Target Power Evaluation Power MPE
Mode Range Distance Density Limit
(MHz) (dBi) (Numeric) (dBm) (mW) (cm) (mW/cm2) (mW/cm2)
WCDMA
826.4-846.6 10.92 12.36 23.5 223.87 20 0.551 0.551
(Band V)
WCDMA
1852.4-1907.6 13.51 22.44 23.5 223.87 20 1.0 1.0
(Band II)
WCDMA
1712.4-1752.6 13.51 22.44 23.5 223.87 20 1.0 1.0
(Band Ⅳ)
LTE
1850.7-1909.3 13.01 20.00 24 251.19 20 1.0 1.0
(Band II)
LTE
1710.7-1754.3 13.01 20.00 24 251.19 20 1.0 1.0
(Band Ⅳ)
LTE
699.7-715.3 9.69 9.31 24 251.19 20 0.465 0.466
(Band Ⅻ)

Note：

1. The device meets FCC MPE at 20 cm distance.
2. Target Power =the max power including Tune-up tolerance, the tune up power declared by manufacture as:

WCDMA Bands: 22.5±1dBm;
LTE Bands: 22.5±1.5dBm

Output power is conducted. This device is to be used in mobile or fixed applications only. Antenna gain
including cable loss must not exceed:
9.69 dBi of frequency band 699-716MHz
10.92 dBi of frequency band 824-849MHz
6.0dBi of frequency band 1710-1755MHz
9.0 dBi of frequency band 1850-1910MHz

FCC Part 27 Page 10 of 34

Document Created: 2019-10-23 16:06:20
Document Modified: 2019-10-23 16:06:20

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