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Understanding Error Vector Magnitude (EVM)

April 8, 2024
Learn about digital modulation schemes used in modern radio frequency communications technologies along with the basics of error vector magnitude (EVM). Discover the uses of constellation diagrams in troubleshooting common root causes of EVM

Achieving higher data throughput is based primarily on either increased bandwidth and/or higher modulation order. Higher order modulation requires higher modulation accuracy; therefore quantifying modulation accuracy is critical in the design, test, and debugging of modern radio frequency communications technologies. Learn about digital modulation schemes used in modern radio frequency communications systems (APSK and QAM), the fundamentals of EVM, basics of constellation diagrams and how constellation diagrams can be used to diagnose or troubleshoot the common root causes of EVM.

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