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

doi:10.1587/transcom.2020EBP3089

Regular Section

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

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Keywords: array antenna, microstrip, series-fed, traveling-wave

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2021 Volume E104.B Issue 6 Pages 624-629

DOI https://doi.org/10.1587/transcom.2020EBP3089

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Abstract

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.

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