Frequency Stable Microwave Sapphire Oscillators
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arXiv
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866916180041662464 |
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| author | Ivanov, Eugene N. Tobar, Michael E. |
| author_facet | Ivanov, Eugene N. Tobar, Michael E. |
| contents | 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. The 9 GHz sapphire oscillator was constructed with the SSB phase noise close to -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. In this work, we focus on 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_18419 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Frequency Stable Microwave Sapphire Oscillators Ivanov, Eugene N. Tobar, Michael E. Applied Physics Instrumentation and Detectors 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. The 9 GHz sapphire oscillator was constructed with the SSB phase noise close to -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. In this work, we focus on 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. |
| title | Frequency Stable Microwave Sapphire Oscillators |
| topic | Applied Physics Instrumentation and Detectors |
| url | https://arxiv.org/abs/2403.18419 |