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measuring UHF RFID chip impedance

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ali0001

Electrical
Aug 22, 2008
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Hello everybody,
Can any one suggest an easy way to measure the complex impedance of an UHF RFID chip.
Thanks
 
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Sounds difficult.

Normal chip measurements are with a 3 point probe, the probes are like coax, center conductor and two outer grounds, but it's just 3 points. Needs an expensive analyzer and a good calibration kit with data.

The old fashion method of reflectometer measurements can get you magnitude but not comples.

Probably a calcualation is better if you have dimensions.

If it's real low frequency, just an LCR meter would give you something.

kch
 
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