Spatial power combining of Ka-band microfabricated TWTs based on a planar helix slow-wave structure

Shaomeng Wang Shaomeng Wang,Chen Zhao Chen Zhao,Sheel Aditya

doi:10.1109/ivec.2016.7561877

Spatial power combining of Ka-band microfabricated TWTs based on a planar helix slow-wave structure

Shaomeng Wang Shaomeng Wang, Chen Zhao Chen Zhao + Show 1 more

https://doi.org/10.1109/ivec.2016.7561877

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Publication Date: Apr 1, 2016

Citations: 1

Affiliation: Nanyang Technological University

#Planar Helix Slow-wave Structure #Traveling Wave Tubes + Show 8 more

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Abstract

Spatial power combining of two Ka-band microfabricated traveling wave tubes (TWTs) is reported. The TWTs are based on planar helix slow-wave structure with straight-edge connections (PH-SEC). Transition from a waveguide to the PH-SEC forms the basis for division of input power from a waveguide to the TWTs and for combining the output power into a waveguide. For a 3.7 KV and 10 mA beam, the PIC simulation results show that the output power can reach 13 W at 30GHz, with a calculated combining efficiency of 98%.

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