Study of a T-shaped slot with a capacitor for high isolation between MIMO antennas

Jungsik Park, Junho Choi, Ji Yong Park, Young Sik Kim

Research output: Contribution to journalArticle

34 Citations (Scopus)


In this letter, an isolation improvement method between two closely packed planar inverted-F antennas (PIFAs) is proposed via a miniaturized ground slot with a chip capacitor. The proposed T-shaped ground slot acts as a notch filter, and the capacitor is utilized to reduce the slot length. The equivalent circuit model of the proposed slot with the capacitor is derived. The measured isolation between two PIFAs is down to below 20 dB at the whole WLAN band of 2.4 GHz.

Original languageEnglish
Article number6341037
Pages (from-to)1541-1544
Number of pages4
JournalIEEE Antennas and Wireless Propagation Letters
Publication statusPublished - 2012 Dec 1



  • Antenna
  • capacitor
  • isolation
  • mutual coupling
  • slot

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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