Summary

This paper demonstrates the signal amplitude loss that occurs in traditional complex down-conversion (quadrature demodulation) systems. It guides the reader through the mathematical origin of the loss, measurement approaches, and practical implications for receiver and signal-processing designs.

Key Takeaways

• Explain how amplitude loss arises from ideal quadrature demodulation and non-ideal I/Q implementation effects
• Quantify amplitude loss with closed-form expressions and example calculations for common down-conversion architectures
• Demonstrate measurement techniques (using spectral analysis/FFT) to observe and estimate the loss in real systems
• Recommend practical mitigation strategies such as calibration, phase correction, and filter/scale adjustments

Who Should Read This

DSP, RF, and communications engineers with hands-on receiver or SDR design responsibilities who need to understand, measure, and compensate amplitude errors from complex down-conversion.

TimelessIntermediate

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