A Port and Frequency Reconfigurable MIMO Slot Antenna for WLAN Applications

PROJECT TITLE :

A Port and Frequency Reconfigurable MIMO Slot Antenna for WLAN Applications

ABSTRACT:

A novel compact four-port reconfigurable multiple-input multiple-output (MIMO) antenna design for IEEE 802.eleven applications is proposed. In one configuration, the antenna provides four ports operating from 4.9 to five.725 GHz with isolation between antennas bigger than fourteen dB. Within the second configuration, it provides a 2-port antenna operating at two.4–two.five GHz together with another two-port antenna operating at four.nine–5.725 GHz all with isolations larger than 18 dB. The structure consists of four-slot antennas, and 2 of the slots are created reconfigurable by including MEMS switches in the slots. The antenna size is compact and occupies and is printed on FR-4 printed-circuit-board. The proposed antenna is investigated by simulation and measurement, and results include radiation patterns, S-parameters, and signal correlations and branch power ratio (BPR) between ports. These show that in typical wireless environments’ envelope, cross correlations of but 0.2 between the ports are obtained. The effect of the RF MEMS switches on the antenna performance is also addressed.

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