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DS1221A Notch Filter and Demodulator
Improve electromagnetic and radio frequency analysis of contactless solutions
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The DS1221A Notch Filter and Demodulator reduces quantization error and achieves a better signal-to-noise ratio when testing for side channel leakage.
Highlights
When testing for side channel leakage in a contactless solution, a reader’s 13.56 MHz carrier wave introduces significant noise during measurement. The Notch Filter and Demodulator consists of analog filters that reduce the radio frequency signal while preserving the leakage signal from a contactless smart card. As a result, you can reduce the input voltage range of the digital oscilloscope to minimize the quantization error and consequently achieve a better signal-to-noise ratio. While the DS1221A is designed to be used in combination with the High Precision Electromagnetic Probe for electromagnetic radio frequency analysis or Micropross MP300 TCL2 RF antenna for radio frequency analysis, the filter can be used with any side channel test system.
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