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Broadband MIMO Antenna Decoupling Design Based on Current Cancellation Model

  • Beijing Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this work, a decoupling design for a wideband millimeter wave (mmW) multiple input multiple output (MIMO) antenna is proposed based on a current cancellation model. First, a dual-element coupling model is established through coupled current analysis. Subsequently, a metal dumbbell-shaped stub (Bar-H) is introduced between the two elements to achieve current cancellation, enabling the antenna to attain an operational bandwidth spanning 26-30 GHz. The | S21| across the operating bandwidth is maintained below -17.5 dB, with values below -20 dB in the 28.5-30 GHz range. Finally, an eight-element MIMO antenna is designed and analyzed for decoupling performance, along with array beam scanning. The results demonstrate that the proposed decoupling method is also applicable to multi-element MIMO arrays.

Original languageEnglish
Title of host publication2025 International Conference on Microwave and Millimeter Wave Technology, ICMMT 2025 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Edition2025
ISBN (Electronic)9798331525736
DOIs
Publication statusPublished - 2025
Event16th International Conference on Microwave and Millimeter Wave Technology, ICMMT 2025 - Xi�an, China
Duration: 19 May 202522 May 2025

Conference

Conference16th International Conference on Microwave and Millimeter Wave Technology, ICMMT 2025
Country/TerritoryChina
CityXi�an
Period19/05/2522/05/25

Keywords

  • Array decoupling
  • current cancellation model
  • multiple-input multiple-output (MIMO) antenna

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