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https://hdl.handle.net/2440/87407
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Type: | Journal article |
Title: | Generation of 103.75 GHz CW source with 5.10‾¹⁶ frequency instability using cryogenic sapphire oscillators |
Other Titles: | Generation of 103.75 GHz CW source with 5.10-bar(16) frequency instability using cryogenic sapphire oscillators |
Author: | Bara, R. Le Floch, J. Tobar, M. Stanwix, P. Parker, S. Hartnett, J. Ivanov, E. |
Citation: | IEEE Microwave and Wireless Components Letters, 2012; 22(2):85-87 |
Publisher: | Institute of Electrical and Electronics Engineers |
Issue Date: | 2012 |
ISSN: | 1531-1309 1558-1764 |
Statement of Responsibility: | Romain Bara, Jean-Michel Le Floch, Michael E. Tobar, Paul L. Stanwix, Stephen R. Parker, John G. Hartnett, and Eugene N. Ivanov |
Abstract: | We report the generation of millimeter wave signals with frequency instability of a few parts in 10¹⁶. Such performance was achieved at 103.750 GHz by frequency multiplication of two nominally identical 12.969 GHz oscillators based on liquid helium cooled sapphire dielectric resonators. The multiplication stages were shown to only add a small amount of noise at averaging times less than 10 s, resulting in a minimum of frequency instability of 5×10‾¹⁶ at 20 s averaging time. Such ultra-stable signal sources operating at frequencies of 100 GHz are very important for many applications including high frequency radio astronomy. |
Keywords: | ATACAMA; CW source; EHF; SKA; cryogenic sapphire oscillators (CSO); doubler; high-q; mm-wave; multiplication; oscillator; sapphire; stability; synthesis; very long baseline interferometry (VLBI) |
Rights: | © 2011 IEEE |
DOI: | 10.1109/LMWC.2011.2181347 |
Grant ID: | http://purl.org/au-research/grants/arc/DP0878108 http://purl.org/au-research/grants/arc/FL0992016 http://purl.org/au-research/grants/arc/DP0878108 |
Published version: | http://dx.doi.org/10.1109/lmwc.2011.2181347 |
Appears in Collections: | Aurora harvest 2 Physics publications |
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RA_hdl_87407.pdf Restricted Access | Restricted Access | 510.56 kB | Adobe PDF | View/Open |
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