Abstract
In this paper, a low-profile wideband circularly polarized (CP) multiple-input multiple-output (MIMO) antenna is presented for wireless local area network (WLAN) applications. The antenna is designed with the help of two truncated corner square patches and parasitic periodic metallic plates. A prototype of the proposed antenna is fabricated and measured. The measurements indicate that the proposed MIMO antenna has usable bandwidth of 13.7%. By properly designing the configuration of the metallic plates, high port isolation of better than 20 dB is achieved. In addition, the diversity performance in terms of envelop correlation coefficient (ECC) is also calculated, showing satisfactory MIMO characteristics. Finally, compared to the other reported CP MIMO antennas in literature, the proposed design possesses exclusive features including low profile structure and wide operating bandwidth.
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