Coupler for coupling gyrotron whispering gallery mode RF into HE11 waveguide
Patent
·
OSTI ID:1170738
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.
- Research Organization:
- Calabazas Creek Research, Inc., San Mateo, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FG02-05ER84181
- Assignee:
- Calabazas Creek Research, Inc. (San Mateo, CA)
- Patent Number(s):
- 8,963,424
- Application Number:
- 13/016,995
- OSTI ID:
- 1170738
- Country of Publication:
- United States
- Language:
- English
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