DocumentCode :
62368
Title :
Design of 825 GHz square helix travellingwave tube
Author :
Kotiranta, Mikko ; Krozer, V.
Author_Institution :
Phys. Inst., Goethe Univ. Frankfurt, Frankfurt am Main, Germany
Volume :
49
Issue :
4
fYear :
2013
fDate :
Feb. 14 2013
Firstpage :
271
Lastpage :
272
Abstract :
A helix travelling-wave tube for 825 GHz has been designed and its broadband amplification performance has been demonstrated with 3D particle-in-simulations. The design utilises a helix slow-wave structure with a square form and input/output couplers based on a transition from the helix to a coplanar waveguide and further to a rectangular waveguide with a through-substrate post coupler. A simulated small-signal gain of 18.3 dB with an output power of over 25 dBm at 1 dB compression point and a 3 dB instantaneous bandwidth of 8% have been obtained.
Keywords :
coplanar waveguides; rectangular waveguides; slow wave structures; submillimetre wave couplers; submillimetre wave tubes; 3D particle-in-simulations; broadband amplification performance; coplanar waveguide; frequency 825 GHz; gain 18.3 dB; helix slow wave structure; input-output couplers; rectangular waveguide; simulated small-signal gain; square helix travelling-wave tube design; through-substrate post coupler;
fLanguage :
English
Journal_Title :
Electronics Letters
Publisher :
iet
ISSN :
0013-5194
Type :
jour
DOI :
10.1049/el.2012.4477
Filename :
6464681
Link To Document :
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