Closed-form design method for unequal lumped-elements Wilkinson power dividers

2009 ◽  
Vol 51 (5) ◽  
pp. 1320-1324 ◽  
Author(s):  
Yongle Wu ◽  
Yuanan Liu
2010 ◽  
Vol 101 ◽  
pp. 97-114 ◽  
Author(s):  
Yongle Wu ◽  
Yuanan Liu ◽  
Shulan Li ◽  
Cuiping Yu ◽  
Xin Liu

2018 ◽  
Vol 10 (9) ◽  
pp. 1011-1018
Author(s):  
Pengcheng Zhang ◽  
Xianqi Lin ◽  
Cong Tang ◽  
Yuan Jiang ◽  
Yong Fan

AbstractIn this study, wideband bandpass power divider with good out-of-band performance is proposed. Two bandpass filters (BPFs) are utilized to substitute the quarter-wavelength transmission line in conventional Wilkinson power divider. A resistor is specially arranged between two BPFs for a good isolation. Four transmission zeros (TZs) are found to be distributed in the lower and upper stopband of the power divider. Moreover, the locations of two TZs can be shifted by tuning the impedance ratio of the center-loaded open stub, which is propitious to improve the frequency selectivity. Even- and odd-mode methods are applied to analyze the proposed power divider and closed-form design formulas are obtained. Finally, two prototype power dividers with measured rejection level in the upper stopband larger than 29.1 and 32 dB till to 2.7f0 and 2.69f0, respectively, are designed and fabricated to testify the proposed design concept. Good agreement between the simulated and measured results is observed, validating the validity of the proposed design principle.


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