A Balanced Filtering Branch-Line Coupler

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

21 Scopus Citations
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Author(s)

  • Jin Shi
  • Jun Qiang
  • Kai Xu
  • Zheng-Bin Wang
  • Longlong Lin
  • And 3 others
  • Jian-Xin Chen
  • Wei Liu
  • Xiu Yin Zhang

Detail(s)

Original languageEnglish
Article number7390021
Pages (from-to)119-121
Journal / PublicationIEEE Microwave and Wireless Components Letters
Volume26
Issue number2
Publication statusPublished - 1 Feb 2016

Abstract

A balanced filtering branch-line coupler is proposed for the first time. The proposed design is realized by coupled microstrip lines and coupled-line-fed coupling structures. Based on this, the proposed design not only exhibits the functions of power dividing and filtering for differential-mode signals, but also can suppress the common-mode noise/signal and be easily connected with other balanced circuits. The dimension of the proposed design is similar to that of the traditional single-ended design. A prototype of the balanced filtering branch-line coupler centered at 1.87 GHz with the size of 0.33 λg × 0.42 λ g is fabricated, where λg is the guided wavelength at the center frequency. The measured results exhibit the maximum insertion loss of 1.4 dB with a 3-dB fractional bandwidth of 3.5%.

Research Area(s)

  • Balanced, branch-line coupler, common-mode suppression, coupled microstrip lines, Filtering responses

Citation Format(s)

A Balanced Filtering Branch-Line Coupler. / Shi, Jin; Qiang, Jun; Xu, Kai; Wang, Zheng-Bin; Lin, Longlong; Chen, Jian-Xin; Liu, Wei; Zhang, Xiu Yin.

In: IEEE Microwave and Wireless Components Letters, Vol. 26, No. 2, 7390021, 01.02.2016, p. 119-121.

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