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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2016-01-29
Optically Transparent Compact 4×4 Butler Matrix for Wi-Fi Applications
By
Ousama Abu Safia,

    Dr. Ousama Abu Safia

    Université du Québec en Abitibi-Témiscamingue

    Canada

    Homepage

Mourad Nedil,

    Prof. Mourad Nedil

    Applied Science

    UQAT (University of Quebec at Abitibi-Temiscamingue)

    Canada

    Homepage

Mustapha C. E. Yagoub,

    Dr. Mustapha C. E. Yagoub

    School of Electrical Engineering and Computer Science

    University of Ottawa

    Canada

    Homepage

Walid Yusuf

    Dr. Walid Yusuf

    Université du Québec en Abitibi-Témiscamingue

    Canada

    Homepage

Progress In Electromagnetics Research Letters, Vol. 58, 119-124, 2016
doi:10.2528/PIERL15101004 | Google Scholar

Abstract
In this paper, an optically transparent (OT) compact 4×4 Butler matrix (BM) operating at 2.4 GHz for Wi-Fi applications is proposed. The device has structured grids refined in quadrilateral cell shapes. The dimensions of cells are chosen based on a simple formulawhich guarantees a minimum required transparency levelin conjunction with a limited rounds of optimizations. A theoretical optical transparency value of 76.2% has been obtained without affecting the excellent electrical performance of the BM. Moreover, complimentary square split ring resonators (CS-SRRs) are patterned in the ground plane of each transparent transmission line in the BM. This loading technique provides a relative size reduction of 16.6% compared to a conventional structure. Simulated and measured results of the proposed design agree well with conventional BM's results. The proposed technique and its related features can be expanded to other microwave devices.
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Citation
Ousama Abu Safia, Mourad Nedil, Mustapha C. E. Yagoub, and Walid Yusuf, "Optically Transparent Compact 4×4 Butler Matrix for Wi-Fi Applications," Progress In Electromagnetics Research Letters, Vol. 58, 119-124, 2016.
doi:10.2528/PIERL15101004
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