Coupler for coupling gyrotron whispering gallery mode RF into HE11 waveguide

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United States of America Patent

PATENT NO 8963424
SERIAL NO

13016995

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Abstract

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A cylindrical waveguide with a mode converter transforms a whispering gallery mode from a gyrotron cylindrical waveguide with a helical cut launch edge to a quasi-Gaussian beam suitable for conveyance through a corrugated waveguide. This quasi-Gaussian beam is radiated away from the waveguide using a spiral cut launch edge, which is in close proximity to a first mode converting reflector. The first mode converting reflector is coupled to a second mode converting reflector which provides an output free-space HE11 mode wave suitable for direct coupling into a corrugated waveguide. The radiated beam produced at the output of the second mode converting reflector is substantially circular.

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Patent Owner(s)

  • CALABAZAS CREEK RESEARCH, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Neilson, Jeffrey M Redwood City, US 4 101

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