DocumentCode
691400
Title
An input coupler for a W-band gyro-TWA
Author
Garner, Jason R. ; Liang Zhang ; Donaldson, C.R. ; McElhinney, P.
Author_Institution
Dept. of Phys., Univ. of Strathclyde Glasgow, Glasgow, UK
fYear
2013
fDate
29-29 Oct. 2013
Firstpage
47
Lastpage
50
Abstract
The design and numerical modelling of a mm-wave input coupler for use on a W-band (94GHz) gyrotravelling wave amplifier (gyro-TWA) are presented. The design is based on a rectangular-to-circular T-junction with methods of energy transfer directionality employed to achieve a high coupling coefficient. A 3-port coupler with a step-down cut-off waveguide is demonstrated. A broadband reflector is optimized to take the place of the cut-off waveguide in a bid to enlarge the beam tunnel and, hence, reduce alignment difficulty.
Keywords
gyrotrons; millimetre wave couplers; travelling wave amplifiers; waveguide couplers; waveguide junctions; 3-port coupler; beam tunnel; broadband reflector; energy transfer directionality; frequency 94 GHz; gyro-TWA; millimeter input coupler; rectangular-to-circular T-junction; travelling wave amplifiers; T-junction; rectangular-to-circular coupler;
fLanguage
English
Publisher
iet
Conference_Titel
Active and Passive RF Devices Seminar, 1st Annual
Conference_Location
Glasgow
Electronic_ISBN
978-1-84919-793-9
Type
conf
DOI
10.1049/ic.2013.0241
Filename
6842471
Link To Document