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SAR Test Systems


TDK RF Solutions

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Total RF ExpertiseTM  means TDK RF Solutions is your trusted single partner for RF consultation, design, test products, and services.  TDK RF Solutions offers a "single vendor" solution for test facilities by offering both systems and test chambers. We offer the full TDK line of turnkey 3 meter, 5 meter, 10 meter, and compact anechoic chamber solutions based on top-performing TDK Absorber Technologies. TDK RF Solutions builds each facility with high-performance TDK radio wave and microwave absorbing materials selected specifically to match your test requirements and manage the implementation of both systems and chambers to deliver a turnkey test facility that is tightly integrated.



TDK SAR - Specific Absorption Rate Test Systems


TDK Logo




3 kHz - 6 GHz


TDK Specific Absorption Rate Test System (SAR-TS)




  • Robot with probe

  • Twin phantom and integrated table

  • Validation instrumentation in mini-rack

  • Dipole antenna

  • EUT mounting device

  • Shield Room - Anechoic Absorber

  • Turnkey Solution

TDK Specific Absorption Rate Test System (SAR-TS)

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


Considerations for the Evaluation of human exposure to Electromagnetic Fields from Mobile Telecommunication Equipment in the Frequency Range 30 MHz to 6 GHz.


  Last Updated: February 14, 2019
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