Ka-Band Branch Line Coupler Applied Hexagonal Waveguide Suitable for Additive Manufacturing

Motomi ABE  Hidenori YUKAWA  Yu USHIJIMA  Takuma NISHIMURA  Takeshi OSHIMA  Takeshi YUASA  Naofumi YONEDA  

IEICE TRANSACTIONS on Electronics   Vol.E101-C   No.10   pp.805-814
Publication Date: 2018/10/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E101.C.805
Type of Manuscript: PAPER
Category: Microwaves, Millimeter-Waves
3D printer,  additive manufacturing,  direct metal laser sintering,  hexagonal waveguide,  branch line coupler,  

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A hexagonal waveguide branch line coupler suitable for additive manufacturing is proposed in this study, and its design method is elucidated. The additive manufactured Ka-band coupler exhibits characteristics similar to those of a machined coupler, but its weight and cost are reduced by 40% and 60%, respectively. Its effectiveness is also confirmed in this study.