access icon free Design of 825 GHz square helix travelling-wave tube

© The Institution of Engineering and Technology
Received 24/12/2012, Published
Errata or comment

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.

Inspec keywords: slow wave structures; submillimetre wave couplers; rectangular waveguides; coplanar waveguides; submillimetre wave tubes

Other keywords: 3D particle-in-simulations; frequency 825 GHz; rectangular waveguide; helix slow wave structure; simulated small-signal gain; coplanar waveguide; through-substrate post coupler; input-output couplers; broadband amplification performance; gain 18.3 dB; square helix travelling-wave tube design

Subjects: Waveguide and microwave transmission line components; Waveguides and microwave transmission lines; Travelling wave tubes

References

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Correspondence
This article has following corresponding article(s):
power squared