Design of the Traveling-Wave Series-Fed Microstrip Antenna Array with Power Control Slits of Unequal Inter-Element Spacing

Jun GOTO  Makoto MATSUKI  Takashi MARUYAMA  Toru FUKASAWA  Naofumi YONEDA  Jiro HIROKAWA  

Publication
IEICE TRANSACTIONS on Communications   Vol.E104-B   No.6   pp.624-629
Publication Date: 2021/06/01
Publicized: 2020/12/04
Online ISSN: 1745-1345
DOI: 10.1587/transcom.2020EBP3089
Type of Manuscript: PAPER
Category: Antennas and Propagation
Keyword: 
array antenna,  microstrip,  series-fed,  traveling-wave,  

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Summary: 
This study aims to propose a novel traveling-wave series-fed microstrip array antenna and its design. The proposed antenna has two features: additional slits placed on the output side of the antenna element are introduced as a new degree of freedom to control the radiation power from each element. Also, the unequal element spacing is applied to compensate passing phases of each antenna element; meander lines that would increase the insertion loss are not used. A 9-element linear array is designed and tested, and the simulated and measured results agree, thus validating the proposed design.