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Low-noise microwave oscillators based on high-Q sapphire dielectric resonators

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1 Author(s)
Ivanov, E.N. ; Sch. of Phys., Western Australia Univ., Crawley, WA, Australia

Two almost identical 9 GHz oscillators were constructed, each characterised by approximately 500 mW of microwave power dissipated in the sapphire loaded cavity (SLC) resonator. The phase locking of the 'slave' oscillator to 'master' required for the phase noise measurements, was accomplished by altering the level of microwave power dissipated in the SLC resonator of the 'slave' resonator. The spectral density of phase fluctuations of both oscillators was measured with a dual-channel readout system calculating the cross-spectral density of voltage fluctuations between the channels in order to minimise the effect of uncorrelated fluctuations of the each channel on the resolution of spectral measurements.

Published in:

Holey Fibers and Photonic Crystals/Polarization Mode Dispersion/Photonics Time/Frequency Measurement and Control, 2003 Digest of the LEOS Summer Topical Meetings

Date of Conference:

14-16 July 2003