Abstract
A planar power divider with a ultra-wide stopband and isolated frequency band is proposed. In this paper, the quasi-coupled lines are adopted to extend the passband. Moreover, the open and shorted stubs added at the input and output ports, respectively, can increase the bandwidths of the passband and stopband. Furthermore, in order to broaden the isolated frequency band, the impedance Ziso with the series connected resister and capacitor on the right side of the middle coupled line is adopted. This power divider is fabricated on the substrate Rogers RO4003C, with a compact size of 15.19 mm × 11.4 mm.
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