Chinese first SAR measurement and probe calibration system has been founded in TMC. Till now, there have been four SAR measurement systems in all, DASY4, IndexSAR, ANTENNESSA and the most advanced DASY5 NEO. SAR department of TMC has the ability to perform the SAR test, SAR system calibration, HAC test, and also can evaluate the environment electromagnetism radiation, provide the tissue simulant liquid and perform the RFID device test.

1．SAR test

TMC has the ability to perform the SAR testing follow all the specifications and standards according to the request of the client with the 4 sets of advanced system. And also can provide the test for compatibility between wireless communication devices and hearing aids with the DASY HAC extension. Simultaneously, we can make the tissue simulant liquid of different frequency band with accurate parameter values.

Fig 1. DASY 4 System                            Fig 2. IndexSAR System and the  Probe Calibration System
 

Fig 3. ANTENNESSA System                                 Fig 4. DASY5 NEO System

Fig 5. HAC Extension of DASY System
 
Fig 6. Equipment for making and measuring the tissue simulant liquid


2. SAR System Calibration


DASY5 NEO is the most advanced system for the SAR testing in the world now. It can be operated not only for the SAR testing and HAC testing, but also the SAR system calibration (including probe calibration, DAE calibration and dipole calibration) effectively and accurately.
 
Fig 7.DASY5 NEO System

1) Probe Calibration
DASY5 NEO system can be run for the calibration of many kinds of probes in the air and the lossy media, e.g., Near-Field Probes and Free Space Probes. The frequency of calibration is up to 6GHz. During the probe calibration, it can get  determination of probe sensitivity and linearization of the dynamic response, evaluate probe spatial resolution and boundary effects, analyze probe spherical isotropy and uncertainty.

2) DAE (Data Acquisition Electronics) Calibration
DASY5 NEO system can be run for the calibration of DAE’s connector angle and DC voltage in high and low range. Furthermore, it can also check DAE functional test (common mode sensitivity, channel separation, AD converter values with input shorted, input offset measurement with 10MΩ load).

3) Dipole Calibration
DASY5 NEO system can be run for the calibration of dipoles used for validation of the measurement system at frequencies between 300 and 5800MHz.

3. RFID test

TMC also possesses the first UHF RFID Conformance Tester in China, which has been approved by DARTech and CANS, and now is one of the first group of MET Approved RFID Testing Center (ARTC) globally. TMC can perform UHF HW Conformance Certification and UHF Interoperability Certification, provide RFID product testing and certification service for the client all over the world.


 
Fig 8. RFID Conformance Tester                                        Fig 9ARTC Certificate