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Title
Japanese:導波管並列給電アレー用多層構造円偏波素子に関する研究 
English:A Study of a Multi-layer Circularly Polarized Element for a Waveguide Corporate-feed Array 
Author
Japanese: 西本広希, 戸村崇, 廣川二郎.  
English: Hiroki Nishimoto, Takashi Tomura, JIRO HIROKAWA.  
Language Japanese 
Journal/Book name
Japanese:信学技報 
English: 
Volume, Number, Page vol. 120    no. 171    pp. 75-78
Published date Sept. 17, 2020 
Publisher
Japanese: 
English: 
Conference name
Japanese:電子情報通信学会，アンテナ・伝搬研究会 
English: 
Conference site
Japanese: 
English: 
Official URL https://www.ieice.org/ken/paper/20200924m1zU/
 
Abstract A 60-GHz band corporate-feed waveguide slot array has been fabricated by diffusion bonding of laminated thin metal plates. Since a degenerated aperture with a height of 5.4 mm is used for the circularly polarized wave radiator, the number of thin plates with a thickness of 0.2 mm to be bonded is 27, which is a large number. Therefore, two layers of degenerated apertures with a thickness of 0.5 mm are placed with air layers to reduce the number of the plates and to avoid bonding. However, the frequency dependences of the reflection and axial ratio are narrower than those of the previous antenna. In this report, a concept for obtaining broadband frequency dependence using a small number of thin plates is presented. Formerly designed by HFSS (FEM), a fast method of method of moments with genetic algorithm will be used for broadband design.

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