RF Exposure Info MPE

FCC ID: W7OMRF24J40MDME

RF Exposure Info

Download: PDF

FCCID_2208625

Maximum Permissible Exposure Statement
For the

Microchip Technology Inc.

IEEE 802.15.4 RF Transceiver Module with PA/LNA

February 21, 2014

Prepared for:

Microchip Technology Inc.

2355 W. Chandler Blvd.

Chandler, Arizona 85224

Prepared By: Reviewed By:

H.B. Compliance Solutions

5005 S. Ash Avenue, Suite A-10

Tempe, Arizona 85282 Hoosamuddin Bandukwala

Cert # ATL-0062-E

Certificates and reports shall not be reproduced except in full, without the written permission of H.B Compliance Solutions, LLC.

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 (mW/cm2)
P = output power at the antenna terminal (mW)
G = gain of transmit antenna (numeric)
R = distance from transmitting antenna (cm)
Maximum peak output power at antenna input terminal = 20.6 (dBm)
Maximum peak output power at antenna input terminal = 114.81 (mW)
Antenna gain (typical) = 5 (dBi)
Maximum antenna gain = 3.16 (numeric)
Prediction distance = 200 (cm)
Prediction frequency = 2405 (MHz)
MPE limit for uncontrolled exposure at prediction frequency = 1.0 (mW/cm^2)
Power density at prediction frequency = 0.07217 (mW/cm^2)
To solve for the minimum mounting distance required;

R = √ (PG/4πS)
R = √ (114.81 x 3.16 / 4π x 0.07217) = 20 cm (Based on continuous transmission)

END OF TEST REPORT

HBCS MPE Report # EMC_13052_2 Page 2 of 2

Document Created: 2014-02-21 14:34:07
Document Modified: 2014-02-21 14:34:07

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