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TWO ELEMENT BAND-NOTCHED UWB MIMO ANTENNA WITH HIGH AND UNIFORM ISOLATION

By D. Yadav, M. P. Abegaonkar, S. K. Koul, V. N. Tiwari, and D. Bhatnagar

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Abstract:
In this paper, a single band-notched at 5.2 GHz with complementary split ring resonator (CSRR) ultra-wideband (UWB) antenna and its implementation in designing of two element multiple-input multiple-output (MIMO) with high and uniform isolation are experimentally demonstrated. The proposed UWB MIMO consists of T-shaped stub in ground plane in between antenna elements of the size of λat 3.1 GHz/4 to achieve minimum 20 dB isolation, which is almost uniform in entire UWB band. The size of the UWB MIMO antenna is 0.31λat 3.1 GHz×0.434λat 3.1 GHz×0.008λat 3.1 GHz mm3 and it is printed on RT/duroid 5880 substrate (ɛr = 2.2, tanδ = 0.0009), which leads to good gain and high total efficiency of the antenna in operating bands. The simulated and measured result shows good agreement for the impedance bandwidth (|S11| < -10 dB) and isolation (|S21| < -20 dB) most of the operating band, excluding the notched band at 5.2 GHz in UWB range. The simulated, measured and calculated MIMO antenna diversity parameters proves that the antenna is suitable for UWB MIMO systems.

Citation:
D. Yadav, M. P. Abegaonkar, S. K. Koul, V. N. Tiwari, and D. Bhatnagar, "Two Element Band-Notched UWB MIMO Antenna with High and Uniform Isolation," Progress In Electromagnetics Research M, Vol. 63, 119-129, 2018.
doi:10.2528/PIERM17091106

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