Wideband split-ring antenna arrays based on substrate integrated waveguide for Ka-band applications

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Abstract

This paper presents wideband split-ring antenna arrays based on substrate integrated waveguide (SIW) for Ka-band (26.5–
40 GHz) applications. The antenna array is fed by a 2.92 mm coaxial connector (K-connector) and the power is equally
distributed to each split-ring resonator. The designed coplanar waveguide (CPW), SIW, CPW-to-SIW transition, coaxialto-CPW transition, two-stage SIW power divider are described in detail. By using a thin Rogers 6002 substrate with silver
epoxy-filled vias, a transition prototype is designed, fabricated, and tested in a back-to-back configuration. A wideband
split-ring resonator is developed as a single element and four possible arrangements of antenna arrays are introduced.
By combining the designed components and routing paths, two full layouts of the antenna arrays with four split-ring
resonators are addressed. As a demonstrator, a 2×2 antenna array prototype in a compact format is designed, fabricated
and tested. The fabricated antenna array achieves a measured directivity of 15.0 dBi with a fractional bandwidth of 23.0%
centered at 30.5 GHz.
Original languageEnglish
JournalInternational Journal of Microwave and Wireless Technologies
Number of pages13
ISSN1759-0787
DOIs
Publication statusAccepted/In press - 2021

Bibliographical note

https://www.cambridge.org/core/journals/international-journal-of-microwave-and-wireless-technologies/article/wideband-splitring-antenna-arrays-based-on-substrate-integrated-waveguide-for-kaband-applications/EC4CD7B0878963A72222D352BCA0A529

Keywords

  • Antennas and propagation for wireless systems
  • Passive components and circuits

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