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Title: Coupler for coupling gyrotron whispering gallery mode RF into HE11 waveguide

Abstract

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.

Inventors:
Publication Date:
Research Org.:
Calabazas Creek Research, Inc., San Mateo, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1170738
Patent Number(s):
8,963,424
Application Number:
13/016,995
Assignee:
Calabazas Creek Research, Inc. (San Mateo, CA) CHO
DOE Contract Number:  
FG02-05ER84181
Resource Type:
Patent
Resource Relation:
Patent File Date: 2011 Jan 29
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS

Citation Formats

Neilson, Jeffrey M. Coupler for coupling gyrotron whispering gallery mode RF into HE11 waveguide. United States: N. p., 2015. Web.
Neilson, Jeffrey M. Coupler for coupling gyrotron whispering gallery mode RF into HE11 waveguide. United States.
Neilson, Jeffrey M. Tue . "Coupler for coupling gyrotron whispering gallery mode RF into HE11 waveguide". United States. doi:. https://www.osti.gov/servlets/purl/1170738.
@article{osti_1170738,
title = {Coupler for coupling gyrotron whispering gallery mode RF into HE11 waveguide},
author = {Neilson, Jeffrey M},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 24 00:00:00 EST 2015},
month = {Tue Feb 24 00:00:00 EST 2015}
}

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