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http://dx.doi.org/10.5515/KJKIEES.2008.19.8.820

A Method to Improve Isolation of MIMO Antenna System for Wireless Portable Devices Using Multiple Pairs of L-Slots  

Lee, Hyun-Seok (Department of Electronic Engineering, Dongguk University)
Yoon, Sang-Won (Department of Electronic Engineering, Dongguk University)
Park, Hyun-Chang (Department of Electronic Engineering, Dongguk University)
Park, Hyung-Moo (Department of Electronic Engineering, Dongguk University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.19, no.8, 2008 , pp. 820-825 More about this Journal
Abstract
A method to improve isolation characteristics of internal MIMO antenna systems for wireless portable devices operating in the $2.3{\sim}2.4$ GHz band is presented. The proposed system incorporates multiple pairs of L-slots between the two antennas in the ground plane, which operate like a band-stop filter, suppressing mutual coupling between the antennas and resulting in improved isolation. A MIMO antenna system with 6 pairs of L-slots shows reflection loss of -26.4 dB and isolation of -37.5 dB.
Keywords
MIMO; PIFA; Isolation; Mutual Coupling;
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