Phase noise measurements with a cryogenic power-splitter to minimize the cross-spectral collapse effect

2017 ◽  
Vol 88 (11) ◽  
pp. 114707 ◽  
Author(s):  
Archita Hati ◽  
Craig W. Nelson ◽  
David P. Pappas ◽  
David A. Howe
Keyword(s):  
Phase Noise ◽  
Power Splitter ◽  
Noise Measurements ◽  
The Cross ◽  
Collapse Effect

Extending the range and accuracy of phase noise measurements

2003 ◽  
Author(s):  
F.L. Walls ◽  
A.J.D. Clements ◽  
C.M. Felton ◽  
M.A. Lombardi ◽  
M.D. Vanek
Keyword(s):  
Phase Noise ◽  
Noise Measurements

Artifacts and Errors in Cross-Spectrum Phase Noise Measurements : Invited lecture

2021 ◽  
Author(s):  
Yannick Gruson ◽  
Adrian Rus ◽  
Alexander Roth ◽  
Enrico Rubiola
Keyword(s):  
Phase Noise ◽  
Cross Spectrum ◽  
Noise Measurements

A collapse of the cross-spectral function in phase noise metrology

2014 ◽  
Vol 85 (2) ◽  
pp. 024705 ◽  
Author(s):  
C. W. Nelson ◽  
A. Hati ◽  
D. A. Howe
Keyword(s):  
Phase Noise ◽  
Spectral Function ◽  
The Cross

scholarly journals Implementation of a Cross-Spectrum FFT Analyzer for a Phase-Noise Test System in a Low-Cost FPGA

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Patrick Fleischmann ◽  
Heinz Mathis ◽  
Jakub Kucera ◽  
Stefan Dahinden
Keyword(s):  
Phase Noise ◽  
Cross Correlation ◽  
Dynamic Range ◽  
Low Cost ◽  
Test System ◽  
Low Noise ◽  
Noise Levels ◽  
High Quality ◽  
Cross Spectrum ◽  
The Cross

The cross-correlation method allows phase-noise measurements of high-quality devices with very low noise levels, using reference sources with higher noise levels than the device under test. To implement this method, a phase-noise analyzer needs to compute the cross-spectral density, that is, the Fourier transform of the cross-correlation, of two time series over a wide frequency range, from fractions of Hz to tens of MHz. Furthermore, the analyzer requires a high dynamic range to accommodate the phase noise of high-quality oscillators that may fall off by more than 100 dB from close-in noise to the noise floor at large frequency offsets. This paper describes the efficient implementation of a cross-spectrum analyzer in a low-cost FPGA, as part of a modern phase-noise analyzer with very fast measurement time.

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