Frequency Reconfigurable Dual Band MIMO Antenna using Pentagon Slot Resonator With Improved Bandwidth

In this paper, Multiple Input Multiple Output (MIMO) antenna with dual band frequency reconfiguration for reduction of mutual coupling is presented. The proposed antenna consists of multiple stubs incorporated in antenna design. The radiating elements of antenna support bands of 1.5 GHz (GPS) and 2.4 GHz (Wi-Fi) frequency. The two PIN diodes are placed on slot line in order to control the current flowing through the radiator. All simulated results are compared and confirmed. The advantage of this antenna is that bandwidth is increased by switching of PIN diode in the range from 70MHz up to maximum 250MHz. This paper also presents the antenna to operate at frequency range of 3 to 7 GHz of which 5GHz is often used in commercial Wi-Fi applications. These characteristics demonstrate that proposed antenna is an attractive solution for a multimode application like GPS, Wi-Fi Routers, Vehicular communication etc. where wideband is required.