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Low noise 9-GHz sapphire resonator-oscillator with thermoelectric temperature stabilization at 300 Kelvin

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5 Author(s)
Tobar, M.E. ; Dept. of Phys., Western Australia Univ., Nedlands, WA, Australia ; Ivanov, E.N. ; Woode, R.A. ; Searls, J.H.
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The authors report on an X-band microwave oscillator incorporating a room temperature thermoelectric stabilized sapphire resonator operating at 9.00000 GHz. With a Galani type stabilization scheme they have measured a reduced single sideband phase noise of about -124 dBc/Hz at 1 kHz with a f-3 dependence. The measurement was limited by the flicker noise of the phase detector in the feedback electronics. The frequency stability was also measured; at an integration time of 0.1 seconds a δf/f of about 10-11 with a τ0.7 dependence was measured. The frequency drift strongly correlated with ambient temperature fluctuations

Published in:

Microwave and Guided Wave Letters, IEEE  (Volume:5 ,  Issue: 4 )

Date of Publication:

Apr 1995

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