• Corpus ID: 119046664

Cross-spectrum noise measurements at 4 K to minimize power-splitter anti-correlation effect

  title={Cross-spectrum noise measurements at 4 K to minimize power-splitter anti-correlation effect},
  author={Archita Hati and Craig W. Nelson and David P. Pappas and David A Howe},
  journal={arXiv: Instrumentation and Detectors},
We report an accurate measurement of the phase noise of a thermally limited electronic oscillator at 300 K. By thermally limited we mean that the white signal-to-noise ratio of the oscillator is at or near the level generated by the thermal noise of the 50 ohm source resistor. The measurement is devoid of the anti-correlation effect that originates from the common mode power splitter in a cross-spectrum technique. The anti-correlation effect is mitigated by cooling the power splitter to a… 

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