Abstract
Abstract With four rejected bands, a miniaturized ultrawideband multiple-input-multiple-output (UWB-MIMO) antenna is presented. Four notched bands are realized by applying three pairs of L-shape slots and two symmetrical C-like metal stubs. Thus the system can relief latent interference from 3.5 GHz WiMAX/5.3 GHz lower WLAN/5.8 GHz upper WLAN/8.1 GHz X-band. To minimize port coupling and covering 3.1–10.6 GHz UWB band, a T-like metal stub is designed in the ground plan. The results proves that the antenna has four rejected bands across the working band of 3.1 ~ 11 GHz. Moreover, the antenna has compact volume of 21 × 27 × 0.8 mm3, better than −18 dB port isolation, preferable radiation pattern and gentle gain.
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