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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...
A 3-dB planar wideband power divider with an ultra-wide stopband and isolated frequency band is proposed. In order to extend the passband, the quasi-coupled lines are adopted. 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 $Z _{\mathrm {iso}}$ ...
A novel crossover prototype with arbitrary output phases at dual frequencies of interest is proposed for the first time. This crossover architecture was composed of a cascade of two identical couplers and the second coupler was connected upside down in order to perform crossover operation. At either frequency of the dual-band scheme, the output phase of the presented crossover is decided by the coupler's...
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