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Proceedings Paper

Ka-band Gunn-varactor voltage controlled oscillator mode jumping
Author(s): Nizar Sultan; Tony Pellerin
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Paper Abstract

Mode jumping, by sudden frequency and power changes in Gunn-varactor voltage controlled oscillators, VCO's, is analyzed theoretically. This uses a double radial line equivalent circuit for VCO with metallized discs on microwave integrated circuit across a reduced height waveguide. Theoretical predictions are demonstrated in numerous experimental verifications. Finally, a simple method is proposed to avoid mode jumping in such a VCO, which is no longer unpredictable: in increasing the length of the short circuit plunger, LSC, the VCO should only be tuned for LSC values corresponding to the descending curves of the tuning range versus LSC graphs. These are identified as the stable VCO operation modes.

Paper Details

Date Published: 13 October 1995
PDF: 11 pages
Proc. SPIE 2558, Millimeter and Submillimeter Waves II, (13 October 1995); doi: 10.1117/12.224256
Show Author Affiliations
Nizar Sultan, Canadian Space Agency (Canada)
Tony Pellerin, Canadian Space Agency (Canada)


Published in SPIE Proceedings Vol. 2558:
Millimeter and Submillimeter Waves II
Mohammed N. Afsar, Editor(s)

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