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Specific Absorption Rate Test Systems
The TDK SAR System
The TDK RF Solutions Specific absorption rate
(SAR) Measurement System is designed to measure electromagnetic fields and
calculated SAR over a customer-specified frequency range. All tests are
conducted in a shielded test room.
SAR Measurements
SAR testing deals with the thermal effects
of human exposure to RF electromagnetic fields. The SAR is a value that
corresponds to the relative amount of RF energy absorbed by the user of a
device in close proximity to the body. The purpose of testing is to verify
that the RF energy emitted by a device is within permissible limits for
public exposure as defined by test standards.
System Components
The TDK SAR Measurement System is
comprised of the following subsystems:
Measurement System
The measurement system is an easy to use,
flexible package optimized for dosimetric evaluation of radio products.
The package includes Data Acquisition Electronics and system control
computer.
Probes and Measurement
Accessories
Several types of broadband probes and
support accessories are offered based on test requirements. These can
include probes to measure fields inside fluids simulating body tissue to
test radiated emissions from mobile radio equipment, and probes to measure
current distribution on radio products in free space.
Position Controller and Positioning
Robot
The automated robot positions the probe
inside the tissue-simulating liquid over a precisely defined volume. The
robot is controlled by a multiprocessor positioning device.
SAR Accessories
A twin phantom Specific Anthropomorphic
Mannequin houses the tissue-simulating fluid and is adapted in shape and
size to represent the flattened ear of a mobile phone user. It enables the
evaluation of left and right hand phone usage. Additional accessories are
provided to implement an effective SAR system.
System Verification and Support
The validation system enables test
engineers to perform a battery of tests to verify the system operates
within its specifications to ensure the accuracy of the complete
measurement system, components, and software.
System Controller with Application
Software
The SAR system is controlled by a high-end
computer; system software consists of robot control, field measurements
with variable output selections, field scans for SAR applications,
visualization, predefined compliance testing for 1g and 10g SAR
measurements, system validation, and various acquisition modes.
SAR Test Standards
The TDK RF Solutions SAR test system
covers European, Asian, and North American standards that deal with SAR
testing:
| ENV
50166-2 |
Human
Exposure to Electromagnetic Fields 10 kHz to 300 GHz |
FCC OET
Bulletin 65
(Ed. 97-01) Supplement C |
Federal
Communication Commission Office of Engineering & Technology;
Evaluating Compliance with FCC Guidelines for Human Exposure to RF
Electromagnetic Fields |
| FCC
96-326 |
Guidelines
for Evaluating the Environmental Effects of RF Radiation |
| ANSI/IEEE
C95.1-1999 |
IEEE
Standard for Safety Levels with Respect to Human Exposure to RF
Electromagnetic Fields 3 kHz to 300 GHz |
| ETSI TR
134 925 |
Universal
Mobile Telecommunication System (UMTS); SAR requirements and
regulations in different regions |
| IEEE
Std-1528-200X(Draft) |
Recommended
Practices for Determining the Spatial-Peak SAR in the Human Body Due
to Wireless Communication Devices: Experimental Techniques |
| prEN
50361:200 (Draft) |
Human
Exposure to Electromagnetic Fields High-Frequency 300 MHz to 3 GHz |
| ES59005 |
Considerations
for the Evaluation of human exposure to Electromagnetic Fields from
Mobile Telecommunication Equipment in the Frequency Range 30 MHz to
6 GHz. |
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To place an order or to learn more about the TDK RF Solutions products
that best meet your needs, contact your TDK RF Solutions sales
representative:
TDK RF Solutions Inc.
1101 Cypress Creek Rd.
Cedar Park, Texas 78613 USA
Phone:
+1 (512) 258-9478
Fax: +1 (512) 258-0740
E-mail: info@tdkrf.com
Specifications subject to change without
notice.
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