Ultra-Stable Very-Low Phase-Noise Signal Source for Very Long Baseline Interferometry Using a Cryocooled Sapphire Oscillator
Identifieur interne : 006585 ( Main/Exploration ); précédent : 006584; suivant : 006586Ultra-Stable Very-Low Phase-Noise Signal Source for Very Long Baseline Interferometry Using a Cryocooled Sapphire Oscillator
Auteurs : Nitin R. Nand [Australie] ; John G. Hartnett [Australie] ; Eugene N. Ivanov [Australie] ; Giorgio Santarelli [France]Source :
- IEEE transactions on microwave theory and techniques [ 0018-9480 ] ; 2011.
Descripteurs français
- Pascal (Inist)
- Circuit faible bruit, Bruit phase, Source bruit, Radioastronomie, Oscillateur, Implémentation, Synthétiseur fréquence, Circuit numérique, Diviseur, Méthode directe, Synthétiseur numérique, Circuit accordable, Stabilité fréquence, Bande latérale unique, Fonction cohérence, Facteur mérite, Maser, Cryogénie, Température cryogénique, Composite ordre 2, Cohérence, Circuit intégré.
English descriptors
- KwdEn :
- Coherence, Coherence function, Composite second order, Cryogenic temperature, Cryogenics, Digital circuit, Digital synthesizer, Direct method, Divider, Figure of merit, Frequency stability, Frequency synthesizer, Implementation, Integrated circuit, Low noise circuit, Maser, Noise source, Oscillator, Phase noise, Radio astronomy, Single sideband, Tunable circuit.
Abstract
The design and implementation of a novel frequency synthesizer based on low phase-noise digital dividers and a direct digital synthesizer is presented. The synthesis produces two low-noise accurate tunable signals at 10 and 100 MHz. We report the measured residual phase noise and frequency stability of the synthesizer and estimate the total frequency stability, which can be expected from the synthesizer seeded with a signal near 11.2 GHz from an ultra-stable cryocooled sapphire oscillator (cryoCSO). The synthesizer residual single-sideband phase noise, at 1-Hz offset, on 10- and 100-MHz signals was -135 and -130 dBc/Hz, respectively. The frequency stability contributions of these two signals was σy = 9 × 10-15 and σy = 2.2 × 10-15, respectively, at 1-s integration time. The Allan deviation of the total fractional frequency noise on the 10- and 100-MHz signals derived from the synthesizer with the cryoCSO may be estimated, respectively, as σy ≃ 5.2 × 10-15τ-1 + 3.6 × 10-15τ-1/2 + 4 × 10-16 and σy ≃ 2 × 10-15τ-1/2 + 3 x 10-16, respectively, for 1 < r < 104 s. We also calculate the coherence function (a figure of merit for very long baseline interferometry in radio astronomy) for observation frequencies of 100, 230, and 345 GHz, when using the cryoCSO and a hydrogen maser. The results show that the cryoCSO offers a significant advantage at frequencies above 100 GHz.
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream PascalFrancis, to step Corpus: 001675
- to stream PascalFrancis, to step Curation: 004835
- to stream PascalFrancis, to step Checkpoint: 001517
- to stream Main, to step Merge: 006968
- to stream Main, to step Curation: 006585
Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Ultra-Stable Very-Low Phase-Noise Signal Source for Very Long Baseline Interferometry Using a Cryocooled Sapphire Oscillator</title><author><name sortKey="Nand, Nitin R" sort="Nand, Nitin R" uniqKey="Nand N" first="Nitin R." last="Nand">Nitin R. Nand</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>School of Physics, University of Western Australia</s1><s2>Crawley 6009, W.A</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Crawley 6009, W.A</wicri:noRegion></affiliation></author><author><name sortKey="Hartnett, John G" sort="Hartnett, John G" uniqKey="Hartnett J" first="John G." last="Hartnett">John G. Hartnett</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>School of Physics, University of Western Australia</s1><s2>Crawley 6009, W.A</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Crawley 6009, W.A</wicri:noRegion></affiliation></author><author><name sortKey="Ivanov, Eugene N" sort="Ivanov, Eugene N" uniqKey="Ivanov E" first="Eugene N." last="Ivanov">Eugene N. Ivanov</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>School of Physics, University of Western Australia</s1><s2>Crawley 6009, W.A</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Crawley 6009, W.A</wicri:noRegion></affiliation></author><author><name sortKey="Santarelli, Giorgio" sort="Santarelli, Giorgio" uniqKey="Santarelli G" first="Giorgio" last="Santarelli">Giorgio Santarelli</name><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Laboratoire National de Métrologie et d'Essais Sytemes de Reference Temps Espace (LNE-SYRTE), Observatoire de Paris, Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie (UPMC)</s1><s2>75014 Paris</s2><s3>FRA</s3><sZ>4 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>75014 Paris</wicri:noRegion><placeName><settlement type="city">Paris</settlement><region type="région" nuts="2">Île-de-France</region><settlement type="city">Paris</settlement></placeName><orgName type="university">Université Pierre-et-Marie-Curie</orgName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">12-0043518</idno><date when="2011">2011</date><idno type="stanalyst">PASCAL 12-0043518 INIST</idno><idno type="RBID">Pascal:12-0043518</idno><idno type="wicri:Area/PascalFrancis/Corpus">001675</idno><idno type="wicri:Area/PascalFrancis/Curation">004835</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">001517</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">001517</idno><idno type="wicri:doubleKey">0018-9480:2011:Nand N:ultra:stable:very</idno><idno type="wicri:Area/Main/Merge">006968</idno><idno type="wicri:Area/Main/Curation">006585</idno><idno type="wicri:Area/Main/Exploration">006585</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Ultra-Stable Very-Low Phase-Noise Signal Source for Very Long Baseline Interferometry Using a Cryocooled Sapphire Oscillator</title><author><name sortKey="Nand, Nitin R" sort="Nand, Nitin R" uniqKey="Nand N" first="Nitin R." last="Nand">Nitin R. Nand</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>School of Physics, University of Western Australia</s1><s2>Crawley 6009, W.A</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Crawley 6009, W.A</wicri:noRegion></affiliation></author><author><name sortKey="Hartnett, John G" sort="Hartnett, John G" uniqKey="Hartnett J" first="John G." last="Hartnett">John G. Hartnett</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>School of Physics, University of Western Australia</s1><s2>Crawley 6009, W.A</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Crawley 6009, W.A</wicri:noRegion></affiliation></author><author><name sortKey="Ivanov, Eugene N" sort="Ivanov, Eugene N" uniqKey="Ivanov E" first="Eugene N." last="Ivanov">Eugene N. Ivanov</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>School of Physics, University of Western Australia</s1><s2>Crawley 6009, W.A</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Crawley 6009, W.A</wicri:noRegion></affiliation></author><author><name sortKey="Santarelli, Giorgio" sort="Santarelli, Giorgio" uniqKey="Santarelli G" first="Giorgio" last="Santarelli">Giorgio Santarelli</name><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Laboratoire National de Métrologie et d'Essais Sytemes de Reference Temps Espace (LNE-SYRTE), Observatoire de Paris, Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie (UPMC)</s1><s2>75014 Paris</s2><s3>FRA</s3><sZ>4 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>75014 Paris</wicri:noRegion><placeName><settlement type="city">Paris</settlement><region type="région" nuts="2">Île-de-France</region><settlement type="city">Paris</settlement></placeName><orgName type="university">Université Pierre-et-Marie-Curie</orgName></affiliation></author></analytic><series><title level="j" type="main">IEEE transactions on microwave theory and techniques</title><title level="j" type="abbreviated">IEEE trans. microwave theor. tech.</title><idno type="ISSN">0018-9480</idno><imprint><date when="2011">2011</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">IEEE transactions on microwave theory and techniques</title><title level="j" type="abbreviated">IEEE trans. microwave theor. tech.</title><idno type="ISSN">0018-9480</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Coherence</term><term>Coherence function</term><term>Composite second order</term><term>Cryogenic temperature</term><term>Cryogenics</term><term>Digital circuit</term><term>Digital synthesizer</term><term>Direct method</term><term>Divider</term><term>Figure of merit</term><term>Frequency stability</term><term>Frequency synthesizer</term><term>Implementation</term><term>Integrated circuit</term><term>Low noise circuit</term><term>Maser</term><term>Noise source</term><term>Oscillator</term><term>Phase noise</term><term>Radio astronomy</term><term>Single sideband</term><term>Tunable circuit</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Circuit faible bruit</term><term>Bruit phase</term><term>Source bruit</term><term>Radioastronomie</term><term>Oscillateur</term><term>Implémentation</term><term>Synthétiseur fréquence</term><term>Circuit numérique</term><term>Diviseur</term><term>Méthode directe</term><term>Synthétiseur numérique</term><term>Circuit accordable</term><term>Stabilité fréquence</term><term>Bande latérale unique</term><term>Fonction cohérence</term><term>Facteur mérite</term><term>Maser</term><term>Cryogénie</term><term>Température cryogénique</term><term>Composite ordre 2</term><term>Cohérence</term><term>Circuit intégré</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The design and implementation of a novel frequency synthesizer based on low phase-noise digital dividers and a direct digital synthesizer is presented. The synthesis produces two low-noise accurate tunable signals at 10 and 100 MHz. We report the measured residual phase noise and frequency stability of the synthesizer and estimate the total frequency stability, which can be expected from the synthesizer seeded with a signal near 11.2 GHz from an ultra-stable cryocooled sapphire oscillator (cryoCSO). The synthesizer residual single-sideband phase noise, at 1-Hz offset, on 10- and 100-MHz signals was -135 and -130 dBc/Hz, respectively. The frequency stability contributions of these two signals was σ<sub>y</sub> = 9 × 10<sup>-15</sup> and σ<sub>y</sub> = 2.2 × 10<sup>-15</sup>, respectively, at 1-s integration time. The Allan deviation of the total fractional frequency noise on the 10- and 100-MHz signals derived from the synthesizer with the cryoCSO may be estimated, respectively, as σ<sub>y</sub> ≃ 5.2 × 10<sup>-15</sup>τ<sup>-1</sup> + 3.6 × 10<sup>-15</sup>τ<sup>-1/2</sup> + 4 × 10<sup>-16</sup> and σ<sub>y</sub> ≃ 2 × 10<sup>-15</sup>τ<sup>-1/2</sup> + 3 x 10-<sup>16</sup>, respectively, for 1 < r < 10<sup>4</sup> s. We also calculate the coherence function (a figure of merit for very long baseline interferometry in radio astronomy) for observation frequencies of 100, 230, and 345 GHz, when using the cryoCSO and a hydrogen maser. The results show that the cryoCSO offers a significant advantage at frequencies above 100 GHz.</div></front></TEI><affiliations><list><country><li>Australie</li><li>France</li></country><region><li>Île-de-France</li></region><settlement><li>Paris</li></settlement><orgName><li>Université Pierre-et-Marie-Curie</li></orgName></list><tree><country name="Australie"><noRegion><name sortKey="Nand, Nitin R" sort="Nand, Nitin R" uniqKey="Nand N" first="Nitin R." last="Nand">Nitin R. Nand</name></noRegion><name sortKey="Hartnett, John G" sort="Hartnett, John G" uniqKey="Hartnett J" first="John G." last="Hartnett">John G. Hartnett</name><name sortKey="Ivanov, Eugene N" sort="Ivanov, Eugene N" uniqKey="Ivanov E" first="Eugene N." last="Ivanov">Eugene N. Ivanov</name></country><country name="France"><region name="Île-de-France"><name sortKey="Santarelli, Giorgio" sort="Santarelli, Giorgio" uniqKey="Santarelli G" first="Giorgio" last="Santarelli">Giorgio Santarelli</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Asie/explor/AustralieFrV1/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 006585 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 006585 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Asie
|area= AustralieFrV1
|flux= Main
|étape= Exploration
|type= RBID
|clé= Pascal:12-0043518
|texte= Ultra-Stable Very-Low Phase-Noise Signal Source for Very Long Baseline Interferometry Using a Cryocooled Sapphire Oscillator
}}
| This area was generated with Dilib version V0.6.33. |  |