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Zhang, Liang
University of Strathclyde
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2021Fivefold helically corrugated waveguide for high-power w-band gyro-devices and pulse compressioncitations
- 2019Microbial community function in electroactive biofilm-based constructed wetlands
- 2019Anisotropic iron-doping patterns in two-dimensional cobalt oxide nanoislands on Au(111)citations
- 2019Structural and electronic properties of Fe dopants in cobalt oxide nanoislands on Au(111)citations
- 2018Metallic periodic surface lattice enhanced high-power MM-wave sources
- 2018CNC machined helically corrugated interaction region for a THz gyrotron traveling wave amplifiercitations
- 2018Microbial Community Function in Electroactive Biofilm-based Constructed Wetlandscitations
- 2012Grain size tuning of nanocrystalline chemical vapor deposited diamond by continuous electrical bias growth: Experimental and theoretical studycitations
- 2011Theoretical Investigation of Grain Size Tuning during Prolonged Bias-Enhanced Nucleationcitations
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article
CNC machined helically corrugated interaction region for a THz gyrotron traveling wave amplifier
Abstract
This paper reports the development of a helically corrugated interaction region (HCIR) for a 100 W gyrotron traveling wave amplifier operating at a central frequency of 0.37 THz. This HCIR has a corrugation amplitude of 42 μm, with a nominal waveguide diameter of 0.760 mm. The HCIR was made by electroforming copper on a sacrificial aluminum mandrel: the latter was precision CNC milled using a 0.2 mm diameter ball nose cutter. The dispersion characteristics of the HCIR were measured and found to be in good agreement with the analytical calculation and numerical simulation. Measured insertion loss was between 2 and 4 dB.