A Compact Broadband Marchand Balun for Millimeter-wave and Sub-THz Applications

M. Hossain, T. K. Johansen, M. Hrobak, W. Heinrich, V. Krozer

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

This paper presents a compact broadband millimeter-wave Marchand balun, realized using indium phosphide (InP) transferred substrate (TS) technology. The architecture of this balun is based on a folded-type Marchand balun, modified using a compensating transmission line. The core area of the balun is 0.35 × 0.16 mm2 for operation at W-band. The measured results show a corrected insertion loss of less than 7.5 dB and a return loss better than 10 dB in the frequency range from 70 to 110 GHz. Amplitude and phase imbalance remain below 2 dB and 2.5 degrees, respectively, over a 40 GHz bandwidth. To the authors' knowledge, this is the highest RF center frequency published so far for a broadband Marchand type balun with low phase and magnitude imbalance.

Original languageEnglish
Title of host publicationProceedings of the 2020 German Microwave Conference
PublisherIEEE
Publication dateMar 2020
Pages60-63
Article number9080193
ISBN (Electronic)9783982039718
Publication statusPublished - Mar 2020
Event2020 German Microwave Conference, GeMIC 2020 - Cottbus, Germany
Duration: 9 Mar 202011 Mar 2020

Conference

Conference2020 German Microwave Conference, GeMIC 2020
CountryGermany
CityCottbus
Period09/03/202011/03/2020

Keywords

  • Balun
  • Indium phosphide (InP)
  • Millimeterwave
  • MMIC
  • Transferred-substrate technology

Cite this

Hossain, M., Johansen, T. K., Hrobak, M., Heinrich, W., & Krozer, V. (2020). A Compact Broadband Marchand Balun for Millimeter-wave and Sub-THz Applications. In Proceedings of the 2020 German Microwave Conference (pp. 60-63). [9080193] IEEE.