A Super-Wideband and High Isolation MIMO Antenna System Using a Windmill-Shaped Decoupling Structure

A Super-Wideband and High Isolation MIMO Antenna System Using a Windmill-Shaped Decoupling Structure

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In this paper, a novel super-wideband multiple-input multiple-output (SWB-MIMO) antenna system with high isolation has 2004 hyundai santa fe catalytic converter been proposed, each antenna element consisting of a spade-shaped radiation patch, a defected ground structure (DGS) as well as a windmill-shaped decoupling structure.The elliptical slot etched on the radiation patch and the rectangular DGS are jointly utilized to make better the radiation performance and impedance bandwidth.Both of four-element and eight-element SWB-MIMO antenna systems are simulated and analyzed, respectively.A prototype of the four-element SWB-MIMO antenna system with total dimensions of 58 mm $ imes58$ mm $ imes 1$ mm was fabricated to verify the concept of design using an FR4 material substrate.Measurement 2004 nissan titan exhaust system and simulation results indicate that the proposed SWB-MIMO antenna system can work in the frequency band ranging from 2.

9 to 40 GHz with a mutual coupling of lower than-17 dB.Also, excellent performance has been achieved with a low envelop correlation coefficient (ECC) of lower than 0.04, high multiplexing efficiency ($eta _{mathrm {mux}}$ ) of more than-3.0 dB, stable gain of up to 13.5 dBi as well as quasi-omnidirectional radiation properties.

This design provides an important guideline for obtaining a super-wide MIMO antenna.