A solid-mounted resonator-oscillator-based 4.596 GHz frequency synthesis

Abstract : This paper describes a 4.596 GHz frequency synthesis based on a 2.1 GHz solid mounted resonator (SMR) voltage-controlled oscillator (VCO). The SMR oscillator presents a chip size lower than 2 mm(2), a power consumption of 18.2 mW, and exhibits a phase noise of -89 dBc/Hz and -131 dBc/Hz at 2 kHz and 100 kHz offset frequencies, respectively. The VCO temperature-frequency dependence is measured to be -14 ppm/degrees C over a range of -20 degrees C to 60 degrees C. From this source, a low noise frequency synthesizer is developed to generate a 4.596 GHz signal (half of the Cs atom hyperfine transition frequency) with a phase noise of -81 dBc/Hz and -120 dBc/Hz at 2 kHz and 100 kHz from the carrier. The frequency synthesis output is used as a local oscillator in a Cs vapor microcell-based compact atomic clock. Preliminary results are reported and discussed. To the authors knowledge, this is the first development of a SMR-oscillator-based frequency synthesizer for miniature atomic clocks applications.
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Submitted on : Friday, April 6, 2012 - 10:50:17 AM
Last modification on : Monday, February 25, 2019 - 4:34:18 PM

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R. Boudot, M. D. Li, V. Giordano, N. Rolland, P. A. Rolland, et al.. A solid-mounted resonator-oscillator-based 4.596 GHz frequency synthesis. Review of Scientific Instruments, American Institute of Physics, 2011, 82, pp.034706. ⟨10.1063/1.3567010⟩. ⟨hal-00685838⟩

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