Phase locking of 270-440 GHz Josephson flux flow oscillators

Jesper Mygind; V.P. Koshelets; S.V. Shitov; L.V. Filippenko; V.L. Vaks; A.B. Baryshev; W. Luinge; N. Whyborn

doi:10.1088/0953-2048/12/11/309

Phase locking of 270-440 GHz Josephson flux flow oscillators

Jesper Mygind, V.P. Koshelets, S.V. Shitov, L.V. Filippenko, V.L. Vaks, A.B. Baryshev, W. Luinge, N. Whyborn

Department of Physics

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

External phase locking of a Josephson flux flow oscillator (FFO) to a 10 MHz reference oscillator is demonstrated experimentally in the frequency range 270-440 GHz. A linewidth as low as 1 Hz (as determined by the resolution bandwidth of the spectrum analyser) has been measured. This linewidth is far below the fundamental level given by shot and thermal noise of the free-running tunnel junction. The combination of narrow linewidth, wide band tunability and low noise is important for spectral radio astronomy applications.

Original language	English
Journal	Superconductor Science & Technology
Volume	12
Issue number	11
Pages (from-to)	720-722
ISSN	0953-2048
DOIs	https://doi.org/10.1088/0953-2048/12/11/309
Publication status	Published - 1999

Access to Document

10.1088/0953-2048/12/11/309

OpenUrl availability

Full text

Cite this

@article{1a52e75e383146809d5cb9561ee7f803,

title = "Phase locking of 270-440 GHz Josephson flux flow oscillators",

abstract = "External phase locking of a Josephson flux flow oscillator (FFO) to a 10 MHz reference oscillator is demonstrated experimentally in the frequency range 270-440 GHz. A linewidth as low as 1 Hz (as determined by the resolution bandwidth of the spectrum analyser) has been measured. This linewidth is far below the fundamental level given by shot and thermal noise of the free-running tunnel junction. The combination of narrow linewidth, wide band tunability and low noise is important for spectral radio astronomy applications. ",

author = "Jesper Mygind and V.P. Koshelets and S.V. Shitov and L.V. Filippenko and V.L. Vaks and A.B. Baryshev and W. Luinge and N. Whyborn",

year = "1999",

doi = "10.1088/0953-2048/12/11/309",

language = "English",

volume = "12",

pages = "720--722",

journal = "Superconductor Science & Technology",

issn = "0953-2048",

publisher = "IOP Publishing",

number = "11",

}

TY - JOUR

T1 - Phase locking of 270-440 GHz Josephson flux flow oscillators

AU - Mygind, Jesper

AU - Koshelets, V.P.

AU - Shitov, S.V.

AU - Filippenko, L.V.

AU - Vaks, V.L.

AU - Baryshev, A.B.

AU - Luinge, W.

AU - Whyborn, N.

PY - 1999

Y1 - 1999

N2 - External phase locking of a Josephson flux flow oscillator (FFO) to a 10 MHz reference oscillator is demonstrated experimentally in the frequency range 270-440 GHz. A linewidth as low as 1 Hz (as determined by the resolution bandwidth of the spectrum analyser) has been measured. This linewidth is far below the fundamental level given by shot and thermal noise of the free-running tunnel junction. The combination of narrow linewidth, wide band tunability and low noise is important for spectral radio astronomy applications.

AB - External phase locking of a Josephson flux flow oscillator (FFO) to a 10 MHz reference oscillator is demonstrated experimentally in the frequency range 270-440 GHz. A linewidth as low as 1 Hz (as determined by the resolution bandwidth of the spectrum analyser) has been measured. This linewidth is far below the fundamental level given by shot and thermal noise of the free-running tunnel junction. The combination of narrow linewidth, wide band tunability and low noise is important for spectral radio astronomy applications.

U2 - 10.1088/0953-2048/12/11/309

DO - 10.1088/0953-2048/12/11/309

M3 - Journal article

SN - 0953-2048

VL - 12

SP - 720

EP - 722

JO - Superconductor Science & Technology

JF - Superconductor Science & Technology

IS - 11

ER -

Phase locking of 270-440 GHz Josephson flux flow oscillators

Abstract

Access to Document

OpenUrl availability

Fingerprint

Cite this