RF Engineering

Intermodulation Interference: Analysis and Mitigation Techniques

Intermodulation (IM) interference plagues land mobile radio systems and RF engineers alike. It occurs when two or more signals mix in a non-linear device, creating new, unwanted signals that can disrupt communications. IM can degrade system performance, cause dropped calls, and even render entire channels unusable.

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Key Topics Covered:

  • Introduction
  • The Basics of Intermodulation
  • Odd vs. Even Order IM Products
  • Predicting Intermod
  • Practical Intermod Scenarios
  • Suppressing Intermod: The Strategies
  • Misdiagnosis & Signal Forensics
  • Conclusion: Key Takeaways