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  • Broadside CPW coupled-line ...
    Guan-Yu Chen; Jwo-Shiun Sun; Kao-Liang Wu; Cheng-Hung Lin; Chia-Hao Wu; Kwong-Kau Tiong; Chen, Y.D.

    TENCON 2007 - 2007 IEEE Region 10 Conference, 2007-Oct.
    Conference Proceeding

    This paper presents a practical and simple CPW broadside coupled-line balun with multi-layers profile microstrip line and broadside coupling structure to enhance the coupled coefficient and balanced output bandwidth. Designed broadside CPW coupled-line balun design with a symmetric quarter wavelength coupled-line is developed to increase wider bandwidth efficiency and the return loss is better than the traditional planar marchaned coupled-lines balun. The structure of the designed balun is fairly simple, practical and easily fabricated. The measured results show good agreements with those analyses data.