Waveguide attenuation measurements at 890 GHz
- 2 May 1974
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 10 (9) , 145-146
- https://doi.org/10.1049/el:19740111
Abstract
A modified H guide has been proposed as a low-loss low-mode waveguide for the submillimetre-wave region, and is supported by theoretical studies and microwave model measurements. A resonance technique using guide-length variation with temperature change for attenuation and mode-characteristic measurement is shown to be feasible at 890 GHz with an HCN laser. Guide attenuations less than 8 dB/m are obtained in initial measurements on a submillimetre waveguide.Keywords
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