Wideband Balanced-to-Unbalanced Filtering Power Dividers Based on Coupled Lines

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

48 Scopus Citations
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Author(s)

  • Xin Gao
  • Wenjie Feng
  • Wenquan Che
  • Quan Xue

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number7589983
Pages (from-to)86-95
Journal / PublicationIEEE Transactions on Microwave Theory and Techniques
Volume65
Issue number1
Publication statusPublished - 1 Jan 2017

Abstract

Three novel wideband balanced-to-unbalanced filtering power dividers based on coupled lines are proposed in this paper. Multifunctional power dividers can replace various cascaded single devices to decrease integration mismatching loss and circuit size. The wideband response can be easily realized by the coupled lines structures. To further improve the differential-mode passband selectivity, open/shorted coupled lines and half-wavelength open stubs are applied to introduce two transmission zeros near the passband, respectively. In addition, a resistor in the middle of two single-ended ports can be used to realize isolation between out ports. To verify the proposed concepts, three prototypes of wideband balanced-to-unbalanced filtering power dividers operating at 2 GHz are designed and fabricated with the 4-dB differential-mode bandwidths of 80.5%, 71.5%, and 80%. All the structures show good performances for differential-mode out-of-band suppression, common-mode suppression, and isolation.

Research Area(s)

  • Balanced-to-unbalanced, coupled lines, differential/common mode, filtering, power dividers, wideband

Citation Format(s)

Wideband Balanced-to-Unbalanced Filtering Power Dividers Based on Coupled Lines. / Gao, Xin; Feng, Wenjie; Che, Wenquan; Xue, Quan.

In: IEEE Transactions on Microwave Theory and Techniques, Vol. 65, No. 1, 7589983, 01.01.2017, p. 86-95.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review