Compact Ultrawideband Mimo Antenna for Mobile Applications
نویسنده
چکیده
A new broadband multiple-input multiple-output (MIMO) antenna with good isolation and compact size is proposed. The proposed antenna consists of two G-shaped elements in the upper layer and two inverted L protrude branches and a T slot etched in ground which is used to reduce the mutual coupling. This planar antenna has a bandwidth of 100% with |S11| ≤ -10 dB from 2.26GHz to 6.78 GHz. The value of isolation between the two antenna elements is more than 22.5 dB in the whole band. The experimental results verify the simulations. This project presents an ultra-wideband MIMO antenna covering WCDMA, WLAN, WiMax and UWB bands for mobile handset applications. The designed antenna consists of a folded monopole antenna coupled with inverted-L element and meander lines. The proposed antennas are symmetrically placed on top part of the mobile handset ground for MIMO antenna technology. Meander lines are positioned between two antennas for improving the isolation in operation bands. The size of the designed MIMO antenna is 55mm × 13:5 mm. The isolation between two antennas is higher than 17.2 dB. Due to the compact size and ultra-wide bandwidth, it is good for a mobile handset antenna that has a limited space available.
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