Single Ring Slot-Based Antennas for Metal-Rimmed 4G/5G Smartphones

Quangang Chen, Huawei Lin, Jianpeng Wang, Lei Ge*, Yujian Li, Tianqi Pei, Chow-Yen-Desmond Sim

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

In this paper, multiband antennas based on a single ring slot are proposed for 4G/5G smartphone applications. The basic structure of the antenna is consisted of a large metal ground and an unbroken metal rim, in which a single 2 mm-wide ring slots is realized between the metal ground and rim. Here, a reconfigurable 4G antenna (820-960 and 1710-2690 MHz) is initially devised by loading multiple grounded stubs and a simple dc controlling circuit with varactor diode into the upper section of the ring slot. To further cover the sub-6 GHz spectrum (3400-3600 MHz) for future 5G communications, a four-element multi-input multi-output (MIMO) slot antennas configuration is designed by utilizing the lower section of the ring slot. A prototype antenna was fabricated, and good agreement is shown between the measured and simulated results. Due to the advantages such as multiband operation, MIMO configuration for 5G communications, high isolation, and compact structure, the proposed antenna design is attractive for 4G/5G smartphones.

Original languageEnglish
Pages (from-to)1476-1487
Number of pages12
JournalIEEE Transactions on Antennas and Propagation
Volume67
Issue number3
DOIs
Publication statusPublished - Mar 2019
MoE publication typeA1 Journal article-refereed

Keywords

  • 4G/5G
  • metal rim
  • multi-input-multi-output (MIMO)
  • reconfigurable antenna
  • slot antenna
  • WWAN/LTE
  • DUAL-LOOP ANTENNA
  • MONOPOLE ANTENNA
  • MULTIBAND
  • DESIGN
  • SYSTEM
  • ARRAY

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