Time Domain and Frequency Domain

• Frequency domain: measured by Spectrum Analysiszer
  Tells us how properties (amplitudes) change over frequencies:

• Time Domain: measured by Oscilloscope
  Tells us how properties(such as Amplitude(Power), Phase, and so on) change over time:

• Samples:
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• Property of transforms:
  They convert a function from one domain to another with no loss of information

  • Fourier Transform:
    converts a function from the time (or spatial) domain to the frequency domain
    In 1807, Jean Baptiste Joseph Fourier showed that any periodic signal could be represented by a series of sinusoidal functions