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A PIFA type MIMO antenna for USB dongle applications operating at WLAN (2.4 GHz~2.484 GHz) band is proposed and verified. The two PIFAs operate the same frequency band at around 2.4 GHz. The isolation between the PIFAs reaches higher than 15 dB after the inverted-E element and the meandered neutral line are added. The radiation pattern in Y-Z plane has omni-directional characteristic and that of X-Z plane shows the shape of number 8. The proposed MIMO antenna has advantages of small and compact size, acceptable isolation and good radiation patterns.