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Journal of the Korean Society of Marine Engineering
This paper presents a method for analyzing and designing an extremely miniaturized planar ring hybrid, using the combination of parallel and diagonally shorted coupled lines. In contrast to conventional miniaturized coupled line filters, it is proven that the required electrical length of transmission line can be largely reduced to even a few degrees, not only effectively suppressing the spurious passband but also approximately maintaining the same characteristic around the stable centerdoi:10.5916/jkosme.2013.37.7.752 fatcat:kczhhkpaqzeynnymruk23uiopa