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Abstract—A compact dual-band multiple-input-multiple-output (MIMO)/diversity antenna is proposed. This antenna is designed for 2.4/5.2/5.8GHz WLAN and 2.5/3.5/5.5GHz WiMAX applications in portable mobile devices. It consists of two back-to-back monopole an-tennas connected with a T-shaped stub, where two rectangular slots are cut from the ground, which significantly reduces the mutual cou-pling between the two ports at the lower frequency band. The volume of this antenna is 40mm ∗ 30mm ∗ 1mm including the ground plane. Measured results show the isolation is better than −20 dB at the lower frequency band from 2.39 to 3.75GHz and −25 dB at the higher fre-quency band from 5.03 to 7GHz, respectively. Moreover, acceptable radiation patterns, antenna gain, and envelope correlation coefficient are obtained. These characteristics indicate that the proposed antenna is suitable for some portable MIMO/diversity equipments. 1.
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Xiong et al. (2012) studied this question.
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