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This paper presents a novel wideband quadrature hybrid with tunable power dividing ratio. It consists of a broadband hybrid power divider and two varactor diodes. By verifying the reverse voltage of the varactor diodes, the power dividing ratios between the two output ports (i.e., port 3 and port 4) of the hybrid can be easily controlled. Analytical design equations are derived using the even-odd...
A novel approach using fully integrated composite right-/left-handed (CRLH) transmission lines (TLs) is proposed to design equal and unequal dual-frequency Wilkinson power dividers (WPDs) with controllable frequency ratio. Theoretical analysis indicates that the frequency ratio and the power-splitting ratio of the divider can be controlled by changing the element values and the number of the...
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