Compact reconfigurable wideband inverted-F antenna for LTE MIMO mobile applications

Xing Zhao, Jaehoon Choi

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

In this paper, compact reconfigurable wideband Inverted-F Antenna (IFA) elements are proposed for a Long Term Evolution (LTE) mobile terminal. The proposed inverted-F antenna has a very simple planar arrangement. A capacitive coupling feed strip is employed to modify the input impedance matching. A chip inductor is connected in series to the feeding point to realize the wideband property. The whole Multiple-Input Multiple-Output (MIMO) antenna system consists of two similar inverted-F antenna elements. Antenna element #1 has a wideband property with a 6-dB bandwidth from 0.74 to 0.9 GHz. To further expand the bandwidth, antenna element #2 has a reconfigurable property through the use of a Positive Intrinsic-Negative (PIN) diode. Antenna element #2 has a 6-dB bandwidth from 0.74 to 0.84 GHz when the PIN diode is on and from 0.79 to 0.9 GHz when the PIN diode is off. Moreover, the proposed MIMO antenna has a low radiation-pattern-based envelope correlation coefficient (ECC), which is less than 0.15 over LTE bands 4, 5, 13, and 14.

Original languageEnglish
Pages (from-to)1921-1927
Number of pages7
JournalIEICE Transactions on Communications
VolumeE97-B
Issue number9
DOIs
StatePublished - 2014 Sep

Keywords

  • Inverted-F
  • LTE
  • MIMO
  • Reconfigurable antenna
  • Wideband

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