Abstract
This paper proposes a modified vertically installed planar (VIP) coupler for wideband applications. The proposed 5 GHz unlicensed national information infrastructure (U-NII) band VIP coupler is composed of three via holes and RF patterns adjusting current paths of the coupled lines for the wideband characteristic. In measurements, the proposed VIP coupler exhibits 3-dB bandwidth at 2.67 GHz with a fractional bandwidth of 47.7 % and phase error within ±2.5° at a center frequency of 5.8 GHz.
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Schedule a callMore From: The Journal of Korean Institute of Electromagnetic Engineering and Science
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