2016 European Frequency and Time Forum (EFTF) 2016
DOI: 10.1109/eftf.2016.7477759
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A 1 MHz to 50 GHz direct down-conversion phase noise analyzer with cross-correlation

Abstract: A new phase noise test instrument covers the frequency range from 1 MHz to 50 GHz with direct downconversion analog I/Q mixers and baseband signal sampling. The traditional PLL has been replaced by a digital FM demodulator for phase detection and frequency tracking. An additional AM demodulator enables concurrent measurement of phase and amplitude noise. The instrument can measure phase noise as low as -183 dBc/Hz with a 100 MHz carrier frequency and 10 kHz offset within two minutes.

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Cited by 26 publications
(14 citation statements)
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“…Noise measurements were performed using a Signal Source Analyser (SSA) [34], [35] measuring amplitude modulation (AM) and phase noise (PN). Below 1 MHz, the measurement uncertainty for PN is below 1.5 dB and for AM the uncertainty is below 2 dB [36].…”
Section: Dllrf Performance Measurementsmentioning
confidence: 99%
“…Noise measurements were performed using a Signal Source Analyser (SSA) [34], [35] measuring amplitude modulation (AM) and phase noise (PN). Below 1 MHz, the measurement uncertainty for PN is below 1.5 dB and for AM the uncertainty is below 2 dB [36].…”
Section: Dllrf Performance Measurementsmentioning
confidence: 99%
“…The negative outcomes cannot be plotted on a logarithmic scale (dB). The FSWP [17,Equation (4)] uses the estimator…”
Section: The Cross-spectrum Estimatormentioning
confidence: 99%
“…At large m the central limit theorem rules and the background noise can be rejected by a factor approximately equal to 1/ √ m depending on the estimator. Numerous examples are found in the measurement of noise in semiconductors [7], phase noise in oscillators and components [8], [9], [10], [11], frequency fluctuations and relative intensity noise in lasers [12], [13], electromigration in thin films [14], etc. Restricting to one bin of the Fourier transform, the power spectral density integrated over a suitable frequency range is used in radiometry [15], [16], Johnson thermometry [17] and other applications.…”
Section: Introductionmentioning
confidence: 99%