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7 Misconceptions About NFC Testing

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Re: NFC testing
Pi_Huang_LitePoint   8/12/2015 4:56:10 PM
For Initiator test, the tester needs to emulate a Target device. It will capture the polling messages for transmitter signal quality analysis, and also respond by load modulate the field for receiver test. The key measurements are field strength, frequency error, modulation index and receiver sensitivity

For Target test, the tester needs to emulate a Initiator device. It will send polling messages of certain standard to initiate the communication. Device Under Test will respond to the polling in load modulation, which is then capture by the tester. The key measurements are load modulation amplitude, frame delay time, modulation index and receiver sensitivity.

Nick Balmez
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NFC testing
Nick Balmez   8/11/2015 12:45:47 AM
I assume it is a set of tests for the Host (Initiator) and another set for the Device (Target), also I ssume LitePoint test system test both.

What are the differences between the Host testing and the Device testing?

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Re: What kind of tests?
Cschmidek   12/22/2014 7:31:48 PM
When verifying the functionality of wireless devices in production, the focus should be on physical layer performance (i.e., the radio operation), since analog operation is far more likely be impacted by changes in external component, manufacturing variation, or a combination of the two.

Key NFC performance parameters to verify in both Initiator and Target operating modes include the following:

1)   Resonant Frequency (Initiator and Target)—determines if the DUT is operating at the proper frequency; Q-factor should also be captured in these sweeps to determine that the device can efficiently transfer energy,

2)   Field Strength generated by the Initiator—determines if the Initiator can adequately energize the Target,

3)   Receiver Sensitivity—ensure devices can perform at an acceptable operating distance; measure minimum detectable Load Modulation Amplitude by the Initiator and minimum detectable Field Strength by the Target,

4)   Signal Quality—as measured by Load Modulation Amplitude

5)   Response Time of Target—as measured by Frame Delay Time, and

6)   A Basis Functional Test of Initiator and Target—cover NFC-A, NFC-B, NFC-F, and Peer-to-Peer modes (assuming the Device Under Test (DUT) supports all these modes). 

LitePoint's IQnfc Test System, with its Universal Test Head and multi-mode support, can cover all the above tests (and more) in less than 10 seconds.

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What kind of tests?
MeasurementBlues   12/9/2014 10:31:44 AM
What kind of tests should be performed in production? Transmit power? Frequency? Range?

The last page mentions parametric tests. What sort of parametric tests should be performed?

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