Optimized Ultrawideband and Uniplanar Minkowski Fractal Branch Line Coupler

<table>Scattering S11 (<b>—</b>), S21 (<b>−·</b>), and S31 (<b><i>⋯</i></b>) parameters of the conventional branch line coupler and 1st-order Minkowski branch line coupler.</table>

International Journal of Antennas and Propagation

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Figure 2

Figure 2: Optimized Ultrawideband and Uniplanar Minkowski Fractal Branch Line Coupler 