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This paper presents the design of a TE10-to-TE61 mode coupler for a 372 GHz gyrotron travelling wave amplifier. The optimized coupler was able to achieve an -1 dB transmission over the frequency band of 360-384 GHz. The transmission decreases by 1.2 dB when the copper conductivity of 0.5E7 S/m was used in the simulation. The designed coupler was scaled to W-band for manufacture and measurement. The measured transmission and phase response confirmed the mode coupling between the input TE10 mode and the desired TE61 mode.
|Title of host publication||2017 47th European Microwave Conference (EuMC)|
|Place of Publication||Piscataway, NJ.|
|Number of pages||4|
|Publication status||Published - 21 Dec 2017|
|Event||47th European Microwave Conference, EuMC 2017 - Nuremburg, Germany|
Duration: 10 Oct 2017 → 12 Oct 2017
|Conference||47th European Microwave Conference, EuMC 2017|
|Period||10/10/17 → 12/10/17|
- higher order mode
- microwave coupler
- waveguide branches
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