Generalized Dual-Band Unequal Filtering Power Divider with Independently Controllable Bandwidth

Yongle Wu*, Zheng Zhuang, Guangyou Yan, Yuanan Liu, Zabih Ghassemlooy

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

59 Citations (Scopus)


In this paper, a novel design method of generalized dual-band unequal filtering power divider (DUFPD) is proposed. Using this method, the power divider (PD) could be designed to realize the dual-band filtering response with arbitrary power division, arbitrary frequency ratio, arbitrary real terminated impedances, independently controllable bandwidth, and excellent isolation. To satisfy these characteristics, a proper dual-band filtering structure is selected to replace the conventional quarter-wave length transmission line in the PD. In addition, a single resistor structure is utilized to obtain effective isolation between the output ports. Furthermore, the complete design procedures and analytical equations of the proposed generalized DUFPD are presented based on the circuit and transmission line theories. To demonstrate the validity of the proposed design method, a DUFPD with different real terminated impedances is designed, fabricated, and measured. We show that there is a good agreement between the simulated and measured results.

Original languageEnglish
Article number7911240
Pages (from-to)3838-3848
Number of pages11
JournalIEEE Transactions on Microwave Theory and Techniques
Issue number10
Publication statusPublished - Oct 2017


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