Four-Element Low-Band MIMO Antenna for Mobile Phones with Small Clearance

Harri Varheenmaa*, Rasmus Luomaniemi, Anu Lehtovuori, Pasi Yla-Oijala, Ville Viikari

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

This letter presents a four-element Multiple-Input Multiple-Output (MIMO) phone antenna with a metallic rim and 2-mm ground clearance that operates in the low-frequency band. Characteristic mode analysis is used to design the metallic rim so that the structure supports four resonating modes that can be excited separately to obtain MIMO operation in the desired frequency range below 1 GHz. Four exciter elements with matching circuits are designed so that the coupling between the ports is moderate. The prototype is manufactured, and measurement results are shown to corroborate the increased capacity compared to traditional two-element MIMO solutions.

Original languageEnglish
Pages (from-to)145-153
Number of pages9
JournalPROGRESS IN ELECTROMAGNETICS RESEARCH LETTERS
Volume98
DOIs
Publication statusPublished - 2021
MoE publication typeA1 Journal article-refereed

Keywords

  • METAL
  • ARRAY
  • SMARTPHONE

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