Frequency signal source´s PN (phase noise) measurements: Challenges and uncertainty

Author

Rohde, Ulrich L. ; Poddar, Ajay K. ; Rubiola, Enrico ; Silaghi, Marius A.

Author_Institution

BTU Cottbus, Cottbus, Germany

fYear

2015

fDate

12-16 April 2015

Firstpage

62

Lastpage

67

Abstract

This paper describes oscillator noise measurement techniques, challenges and associated measurement uncertainty. The cross-correlation method used in modern PN measurement equipments, can present erroneous result, depending upon phase-inversion, harmonics, o/p load mismatch, and cable length. This discussion is imperative for low phase noise signal sources, validated with 2.4 GHz SAW oscillator, and discussed steps for mitigating these issues by using filtering/phase-matching N/W.

Keywords

UHF oscillators; correlation methods; frequency measurement; measurement uncertainty; noise measurement; phase measurement; phase noise; surface acoustic wave oscillators; SAW oscillator; cable length; cross-correlation method; filtering-phase-matching N-W; frequency 2.4 GHz; frequency signal source PN measurement; measuremen uncertainty; o-p load mismatch; oscillator noise measurement technique; phase noise measuremen; phase-inversion; Frequency measurement; Harmonic analysis; Noise measurement; Phase measurement; Phase noise; Cross-Correlation; Oscillator; Phase Noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Frequency Control Symposium & the European Frequency and Time Forum (FCS), 2015 Joint Conference of the IEEE International

Conference_Location

Denver, CO

Print_ISBN

978-1-4799-8865-5

Type

conf

DOI

10.1109/FCS.2015.7138792

Filename

7138792