StreamCaster MIMO Radio User Manual
4/30/19
10017C000
Silvus Technologies Confidential
Page
14
1.2
Maximum RF Power Density Limits
The RF Radiation Power Density limit figure recommended by Silvus is based upon guideline levels
published in:
a. IEEE standard C95.1 1999 - IEEE Standard for Safety Levels with respect to Human Exposure to Radio
Frequency Electromagnetic Fields, 3 kHz to 300 GHz.
b. Guidelines for Limiting Exposure to Time-varying Electric, Magnetic & Electromagnetic Fields (up to 300
GHz) published in 1998 by the Secretariat of the International Commission on Non-Ionizing Radiation
Protection (ICNIRP).
Both documents define guideline RF power density limits for "Controlled" and "Uncontrolled"
environments. An uncontrolled environment is defined as one in which the person subjected to the RF
radiation may be unaware of and has no control over the radiation energy received. The uncontrolled
environment conditions can arise, even in the best regulated operations and for this reason the limits
defined for the uncontrolled environment have been assumed for the RF Central recommended limit.
Documents a) and b) also show the RF power density guidelines to be frequency dependent. Different
power density / frequency characteristics are presented in the two documents. To avoid complexity and
to avoid areas of uncertainty, Silvus recommends the use of a single power density limit across the
frequency range 100 kHz to 300 GHz. The 1w/m² power density limit we recommend satisfies the most
stringent of the guidelines published to date.
Footnote: The IICNIRP document may be freely downloaded from the internet at
www.icnirp.de/documents/emfgdl.pdf (PDF file).
