State-of-the-art cryocooled sapphire oscillators

Nitin R. Nand; John G. Hartnett; Chuan Lu

doi:10.1109/FCS.2012.6243575

State-of-the-art cryocooled sapphire oscillators

Nitin R. Nand^*, John G. Hartnett, Chuan Lu

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution

Abstract

Two nominally identical ultra-low vibration cryocooled microwave sapphire oscillators are compared. The phase noise of a single oscillator was measured to be -105 dBc/Hz at 1 Hz offset on the 11.2 GHz carrier and is characterized by white frequency noise. The Allan deviation at 1s integration time, with drift removed, is 5.8 × 10 ^-16. Between 0.1 and 100 s, the frequency stability is white frequency noise limited with a minimum of 1.6 × 10 ^-16 around 100 s. The long-term stability of the oscillator degrades due to a sensitivity to diurnal room temperature changes. In the absence of this effect the oscillator has potential to reach a stability below 10 ^-16.

Original language	English
Title of host publication	2012 IEEE International Frequency Control Symposium, IFCS 2012, Proceedings
Pages	631-632
Number of pages	2
DOIs	https://doi.org/10.1109/FCS.2012.6243575
Publication status	Published - 2012
Event	2012 66th IEEE International Frequency Control Symposium, IFCS 2012 - Baltimore, MD, United States Duration: 21 May 2012 → 24 May 2012

Other

Other	2012 66th IEEE International Frequency Control Symposium, IFCS 2012
Country/Territory	United States
City	Baltimore, MD
Period	21/05/12 → 24/05/12

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10.1109/FCS.2012.6243575

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title = "State-of-the-art cryocooled sapphire oscillators",

abstract = "Two nominally identical ultra-low vibration cryocooled microwave sapphire oscillators are compared. The phase noise of a single oscillator was measured to be -105 dBc/Hz at 1 Hz offset on the 11.2 GHz carrier and is characterized by white frequency noise. The Allan deviation at 1s integration time, with drift removed, is 5.8 × 10 -16. Between 0.1 and 100 s, the frequency stability is white frequency noise limited with a minimum of 1.6 × 10 -16 around 100 s. The long-term stability of the oscillator degrades due to a sensitivity to diurnal room temperature changes. In the absence of this effect the oscillator has potential to reach a stability below 10 -16.",

author = "Nand, {Nitin R.} and Hartnett, {John G.} and Chuan Lu",

year = "2012",

doi = "10.1109/FCS.2012.6243575",

language = "English",

isbn = "9781457718199",

pages = "631--632",

booktitle = "2012 IEEE International Frequency Control Symposium, IFCS 2012, Proceedings",

note = "2012 66th IEEE International Frequency Control Symposium, IFCS 2012 ; Conference date: 21-05-2012 Through 24-05-2012",

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AU - Nand, Nitin R.

AU - Hartnett, John G.

AU - Lu, Chuan

PY - 2012

Y1 - 2012

N2 - Two nominally identical ultra-low vibration cryocooled microwave sapphire oscillators are compared. The phase noise of a single oscillator was measured to be -105 dBc/Hz at 1 Hz offset on the 11.2 GHz carrier and is characterized by white frequency noise. The Allan deviation at 1s integration time, with drift removed, is 5.8 × 10 -16. Between 0.1 and 100 s, the frequency stability is white frequency noise limited with a minimum of 1.6 × 10 -16 around 100 s. The long-term stability of the oscillator degrades due to a sensitivity to diurnal room temperature changes. In the absence of this effect the oscillator has potential to reach a stability below 10 -16.

AB - Two nominally identical ultra-low vibration cryocooled microwave sapphire oscillators are compared. The phase noise of a single oscillator was measured to be -105 dBc/Hz at 1 Hz offset on the 11.2 GHz carrier and is characterized by white frequency noise. The Allan deviation at 1s integration time, with drift removed, is 5.8 × 10 -16. Between 0.1 and 100 s, the frequency stability is white frequency noise limited with a minimum of 1.6 × 10 -16 around 100 s. The long-term stability of the oscillator degrades due to a sensitivity to diurnal room temperature changes. In the absence of this effect the oscillator has potential to reach a stability below 10 -16.

UR - http://www.scopus.com/inward/record.url?scp=84866718877&partnerID=8YFLogxK

U2 - 10.1109/FCS.2012.6243575

DO - 10.1109/FCS.2012.6243575

M3 - Conference proceeding contribution

AN - SCOPUS:84866718877

SN - 9781457718199

SP - 631

EP - 632

BT - 2012 IEEE International Frequency Control Symposium, IFCS 2012, Proceedings

T2 - 2012 66th IEEE International Frequency Control Symposium, IFCS 2012

Y2 - 21 May 2012 through 24 May 2012

ER -

State-of-the-art cryocooled sapphire oscillators

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