Secondary standard for PM and AM noise at 5, 10, and 100 MHz
F.L. Walls
- Vol. 42, Iss: 2, pp 136-143
TLDR
In this article, a portable secondary standard for phase modulation (PM) and amplitude modulation (AM) noise at 5, 10, and 100 MHz is described, and the accuracy of the standard for both PM and AM noise is +0.14 dB.Abstract:
A practical implementation of a portable secondary standard for phase modulation (PM) and amplitude modulation (AM) noise at 5, 10, and 100 MHz is described. The accuracy of the standard for both PM and AM noise is +0.14 dB, and the temperature coefficient is less than 0.02 dB/K. The noise floor S/sub phi / (10 kHz) of the standard for PM noise measurements is less than -190 dBC relative to 1 rad/sup 2//Hz at 5, 10, and 100 MHz. The noise floor for AM measurements depends on the configuration. A calibrated level of PM and AM noise of approximately -130+or-0.2 dB relative to 1 rad/sup 2//Hz (for Fourier frequencies from approximately 1 Hz to 10% of the carrier frequency) is used to evaluate the accuracy versus Fourier frequency. Similar PM/AM noise standards are under test at 10 GHz. This new standard can also be used as an alternative to the normal method of calibrating the conversion sensitivity of the PM/AM detector for PM/AM measurements. Some types of time-domain measurement equipment can also be calibrated. >read more
Citations
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Proceedings ArticleDOI
Suppressed carrier based PM and AM noise measurement techniques
TL;DR: In this paper, the authors discuss the advantages and disadvantages of using carrier suppression techniques to measure PM and AM noise in oscillators, amplifiers, and components, and the advantages over the three-cornered-hat cross-correlation technique.
Proceedings ArticleDOI
Investigations of AM and PM noise in X-band devices
TL;DR: In this article, the authors report measurements of phase modulation (PM) and amplitude modulation (AM) noise in a variety of amplifiers, dielectric resonator oscillator (DRO) sources, and mixers at 10.6 GHz.
Journal ArticleDOI
Microwave regenerative frequency dividers with low phase noise
E.S. Ferre-Pikal,F.L. Walls +1 more
TL;DR: In this paper, the regenerative divide-by-two (halver) circuits with very low phase modulation (PM) noise at input frequencies of 18.4 GHz and 39.8 GHz were demonstrated.
Proceedings ArticleDOI
Time and frequency measurement at NIST: the first 100 years
TL;DR: In this article, the authors look back on the first 100 years and summarize NIST work on time and frequency measurement, a topic of some prominence from the early years of the institution.
Journal ArticleDOI
Correlation between upper and lower sidebands
TL;DR: Although the upper and lower PM or AM noise sidebands are equal and correlated for broadband additive noise, the phase between the AM and the PM sidebands varies randomly with time, these conclusions still hold even when the RF noise side bands are not symmetric about the carrier.
References
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Proceedings ArticleDOI
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David W. Allan,H.W. Hellwig,P. Kartaschoff,J. Vanier,John R. Vig,G.M.R. Winkler,N.F. Yannoni +6 more
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Proceedings ArticleDOI
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Journal ArticleDOI
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