Understand the Frequency Domain

When teaching my General Class license class, I find that one of the concepts that students have the hardest time understanding is the frequency domain. Even so, as we move to software-defined radios, it’s an important concept for radio amateurs to understand. Now, DSPDesignLine, a website for electronics engineers working with digital signal processing, is publishing a series of articles labelled a “frequency domain tutorial.” Here are the articles that are online so far:

  • Part 1 discusses the ambiguities of discrete signals.
  • Part 2 introduces quadrature (complex) signals, and explains the nature, and notation, of the spectral diagrams used in DSP.

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