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21 April 1986 A Reference Frequency System At 11.5-12.0 GHz For Phase Locking A Carcinotron At 320-370 GHz
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Proceedings Volume 0598, Instrumentation for Submillimeter Spectroscopy; (1986) https://doi.org/10.1117/12.952340
Event: 1985 International Technical Symposium/Europe, 1985, Cannes, France
Abstract
Carcinotrons used as local oscillator in mm/sub-mm receivers require frequency and phase stabilisation, the latter more specifically for receivers in mm-interferometers. Locking to a phase- and frequency-stable X- or S-band reference source, using a microwave synthesizer is quite common for laboratory experiments. For use on a telescope in a common user receiver such a synthesizer is thought to be too expensive, as well as an overkill. This paper describes a tunable 11.5-12.0 GHz reference frequency system, used in a frequency and phase lock system for a 320-370 GHz carcinotron, that incorporates a relatively cheap 250-500 MHz synthesizer with relaxed phase noise specifications. Necessary phase noise specifications for the reference frequency system and synthesizer will be derived. Results on the frequency and phase locking of a carcinotron will be presented.
© (1986) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
E. E. M. Woestenburg "A Reference Frequency System At 11.5-12.0 GHz For Phase Locking A Carcinotron At 320-370 GHz", Proc. SPIE 0598, Instrumentation for Submillimeter Spectroscopy, (21 April 1986); https://doi.org/10.1117/12.952340
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