A Dual-Band Balun Architecture with Unequal Port-Terminations

Rahul Gupta, Sabina Kairatova, Mohammad Hashmi, Galymzhan Nauryzbayev

Research output: Chapter in Book/Report/Conference proceedingConference contribution


A dual-band balun capable of providing inherent impedance transformation required for unequal terminations at the balanced and unbalanced ports is proposed in this paper. A systematic design analysis of the proposed balun is carried out to provide closed-form design equations for quick prototyping. Design cases are included to demonstrate the effectiveness of the developed design procedure. The proposed balun is capable of achieving a high frequency ratio (1.6<r<5.0) and high impedance ratio (1<k<10). A prototype operating at 1/2.6GHz and port terminations of 25 and 75 is fabricated for the evaluation of both the proposed design and the design procedure. An excellent agreement between the EM simulation and measurement results verifies the effectiveness of the dual-band operation of the proposed balun structure.

Original languageEnglish
Title of host publication2020 50th European Microwave Conference, EuMC 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages4
ISBN (Electronic)9782874870590
Publication statusPublished - Jan 12 2021
Externally publishedYes
Event50th European Microwave Conference, EuMC 2020 - Utrecht, Netherlands
Duration: Jan 12 2021Jan 14 2021

Publication series

Name2020 50th European Microwave Conference, EuMC 2020


Conference50th European Microwave Conference, EuMC 2020


  • dual-band balun
  • high frequency ratio
  • high impedance transformation
  • impedance transforming balun
  • isolation

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Instrumentation


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