FCC SAR Testing & Radio Frequency Exposure

Question 1

What does SAR stand for in the context of FCC device testing?

Accepted Answer

Specific Absorption Rate

Answer

SAR (Specific Absorption Rate) is the rate at which energy is absorbed by the human body when exposed to a radio frequency electromagnetic field.

Question 2

What is the FCC's general population SAR limit for mobile phones operated near the head?

Accepted Answer

1.6 W/kg averaged over 1 gram

Answer

FCC 47 CFR Part 2.1093 sets the SAR limit at 1.6 W/kg averaged over any 1 gram of tissue for the general population/uncontrolled exposure category.

Question 3

Over what mass of tissue is the FCC SAR limit for the head and trunk spatially averaged?

Accepted Answer

1 gram

Answer

The FCC SAR limit of 1.6 W/kg is averaged over any 1 gram of tissue in the shape of a cube, as specified in 47 CFR Part 2.1093.

Question 4

Which IEEE standard specifies the measurement procedures for SAR of wireless mobile handsets?

Accepted Answer

IEEE 1528

Answer

IEEE 1528 (Recommended Practice for Determining the Peak Spatial-Average SAR in the Human Head from Wireless Communications Devices) defines SAR measurement procedures for mobile handsets.

Question 5

What is the primary purpose of the homogeneous liquid filling the head phantom in SAR testing?

Accepted Answer

To simulate the average dielectric properties of human head tissue

Answer

The tissue-simulating liquid is formulated to match the dielectric properties (permittivity and conductivity) of human head tissue at the test frequency, enabling accurate SAR measurements.

FCC - Federal Communications Commission Certified Laboratory Practice Test

FCC - Federal Communications Commission Certified Laboratory Practice Test

FCC SAR Testing & Radio Frequency Exposure