Compact and Broadband Multi-aperture Coupler for Terahertz Sheet Beam Travelling Wave Tubes

In this paper, a compact and broadband directional multi-aperture waveguide coupler was initially designed for terahertz sheet beam travelling wave tubes. The proposed coupler is based on a series of identical apertures distributed between a pair of parallel rectangular waveguides. Simulation result...

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Bibliographic Details
Main Authors: He, Jingcong, Shu, Guoxiang, Chang, Zhiwei, Ren, Junchen, Liao, Jiacai, Deng, Junzhe, He, Wenlong
Format: Conference Proceeding
Language:English
Subjects:
Bandwidth
Couplers
Couplings
Frequency measurement
multi-aperture waveguide coupler
power coupling structure
Reflection
sheet beam travelling wave tube
Simulation
terahertz band
Traveling wave tubes
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Summary:In this paper, a compact and broadband directional multi-aperture waveguide coupler was initially designed for terahertz sheet beam travelling wave tubes. The proposed coupler is based on a series of identical apertures distributed between a pair of parallel rectangular waveguides. Simulation results predicted that the bandwidth for the coupling coefficient greater than −1 dB was 81.3 GHz (220.0-301.3 GHz), corresponding to a fractional bandwidth of 31.2%. Meanwhile, the reflection of all ports was lower than −15 dB, and the maximum isolation coefficient was below −15 dB.
ISSN:2694-2968
DOI:10.1109/GSMM53250.2021.9511968