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FAIMS apparatus and method for separating ions

  • US 7,084,394 B2
  • Filed: 08/28/2003
  • Issued: 08/01/2006
  • Est. Priority Date: 09/25/2002
  • Status: Expired due to Fees
First Claim
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1. A method of controlling an asymmetric waveform generated as a combination of a plurality of sinusoidal waves including two sinusoidal waves having a frequency that differs by a factor of two, the method comprising the steps of:

  • sampling the generated asymmetric waveform to obtain a set of data points that is indicative of the generated asymmetric waveform;

    normalizing each data point of the set of data points;

    determining at least a value relating to the normalized data points;

    comparing the determined at least a value to template data relating to an ideal asymmetric waveform; and

    ,in dependence upon the comparison, effecting a change to the generated asymmetric waveform.

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