Example of Phase Modulated Signal (IMAGE)

National Institute of Standards and Technology (NIST)

Example of Phase Modulated Signal

Caption

Wireless communications often use a format called phase shifting or phase modulation, in which the signals are shifted relative to one another in time. In this example, the communications signal (blue) contains periodic reversals relative to the reference signal (red). These reversals are the blips that look like cats' ears. The information (or data) is encoded in this modulation.

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Holloway/NIST

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