Design of 825 GHz square helix travelling‐wave tube | Zendy

Kotiranta M. | Zendy; Krozer V. | Zendy

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Design of 825 GHz square helix travelling‐wave tube

Author(s) -

Kotiranta M.,

Krozer V.

Publication year - 2013

Publication title -

electronics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.375

H-Index - 146

eISSN - 1350-911X

pISSN - 0013-5194

DOI - 10.1049/el.2012.4477

Subject(s) - traveling wave tube , square (algebra) , traveling wave , square wave , helix (gastropod) , tube (container) , optics , materials science , physics , engineering , electrical engineering , mathematics , telecommunications , geometry , mathematical analysis , bandwidth (computing) , amplifier , composite material , voltage , geology , snail , paleontology

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.

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