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Abstract
We show that state-of-the-art phase noise and high frequency stability could be simultaneously achieved in a microwave oscillator based on the sapphire-loaded cavity resonator. Two 9 GHz sapphire oscillators were constructed with the single-sideband (SSB) phase noise close t -170 dBc/Hz at an offset frequency of 10 kHz and fractional frequency instability less than 2 10-13 for integration times from 5 to 50 s. This work describes the technique for phase-referencing the microwave sapphire oscillator to a stable radio frequency source. We also discuss the suppression of the fast phase fluctuations of the microwave signal due to its transmission through the high- Q resonator.
Original language | English |
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Pages (from-to) | 1642-1645 |
Number of pages | 4 |
Journal | IEEE Microwave and Wireless Technology Letters |
Volume | 33 |
Issue number | 12 |
Early online date | 17 Oct 2023 |
DOIs | |
Publication status | Published - Dec 2023 |
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Centre of Excellence for Dark Matter Particle Physics
Barberio, E. (Investigator 01), Williams, A. (Investigator 02), Bell, N. (Investigator 03), Stuchbery, A. (Investigator 04), Tobar, M. (Investigator 05), Boehm, C. (Investigator 06) & Wallner, A. (Investigator 07)
ARC Australian Research Council
1/01/20 → 31/12/26
Project: Research
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Wideband Tuneable Low Phase Noise Oscillators for 5G
Tobar, M. (Investigator 01), Goryachev, M. (Investigator 02) & Ivanov, E. (Investigator 03)
ARC Centre of Excellence for Engineered Quantum Systems
1/01/21 → 31/12/21
Project: Research