Single-Layer Dual-Band Balanced Substrate- Integrated Waveguide Filtering Power Divider for 5G Millimeter-Wave Applications

Pei Ling Chi*, Yi Ming Chen, Tao Yang

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

A single-layer substrate-integrated waveguide (SIW) filtering power divider (FPD) with fully differential operation at 28 and 39 GHz is proposed in this letter. This FPD consists of three SIW cavities where the differential and common modes of each cavity were properly designed to form three-pole dual passbands, facilitate deployment of isolation resistors, and introduce transmission zeros while attaining high in-band common-mode rejection. To improve the output return loss and isolation in dual bands, a novel and simple approach to find the proper location of isolation resistors is presented. At operating frequencies, the measured differential-mode input or output return loss, minimum insertion loss, isolation, and common-mode suppression are >14.1 dB,< (3 + 2.2) dB, >14.9 dB, and >30.3 dB, respectively. The amplitude and phase imbalances between outputs are < 0.48 dB and <4.2°, respectively.

Original languageEnglish
Article number9078115
Pages (from-to)585-588
Number of pages4
JournalIEEE Microwave and Wireless Components Letters
Volume30
Issue number6
DOIs
StatePublished - Jun 2020

Keywords

  • 5G
  • balanced
  • common-mode rejection
  • differential
  • dual-band
  • filtering power divider (FPD)
  • isolation resistor
  • mixed-mode
  • single-layer
  • substrate-integrated waveguide (SIW)

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