Advancements in Flexible MIMO Antennas for 5G Smartphones

Jayshri Kulkarni*, Arpan Desai, Heng Tung Hsu, Brian Garner, Yang Li, Chow Yen Desmond Sim, Vigneswaran Dhasarathan

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


This chapter analyzes a wideband flexible self-isolating MIMO antenna designed for Sub-6 GHz 5G and WLAN smartphone terminal applications. The chapter explores a specific design technique that involves the insertion of four octagonal rings between opposite sides of the main radiator. This technique aims to achieve a wider bandwidth for the antenna. The utilization of a flexible polyamide substrate for printing the radiators is a key focus in this chapter. This allows the antenna to operate across the entire Sub-6 GHz 5G and WLAN bands, making it suitable for smartphone terminal applications. Measurement data is presented in this chapter to facilitate comparison and validation of the proposed antenna prototype. By examining the measurement results, the performance and effectiveness of the antenna design can be assessed. Additionally, this chapter includes an analysis of the Specific Absorption Rate (SAR) for the conformability of the antenna design to smartphone terminal applications. SAR analysis is essential to ensure that the antenna operates within the safety limits for human exposure to electromagnetic radiation.

Original languageEnglish
Title of host publicationEAI/Springer Innovations in Communication and Computing
PublisherSpringer Science and Business Media Deutschland GmbH
Number of pages30
StatePublished - 2024

Publication series

NameEAI/Springer Innovations in Communication and Computing
VolumePart F1590
ISSN (Print)2522-8595
ISSN (Electronic)2522-8609


  • Design technique
  • Flexible antenna
  • MIMO antenna
  • Measurement data
  • Polyamide substrate
  • Self-isolating antenna
  • Smartphone terminal applications
  • Specific Absorption Rate (SAR) analysis
  • Sub-6 GHz 5G
  • WLAN
  • Wideband antenna


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