Notch Filter and Demodulator

The DS1221A Notch Filter and Demodulator reduces quantization error and achieves a better signal-to-noise ratio when testing for side channel leakage.

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  • Technology

    Device Security

  • Product type

    Notch filter and demodulator

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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.