Dual band compact antenna with series of hexagonal cut and coupling structure for isolation enhancement

The paper presented a design of 2X1 antenna for dual band WLAN application with coupling element to improve the mutual coupling. Coupling structure is located between two patch antennas. The designed structure is consisting of a series of hexagonal cut to shrink the size of the patch antenna. A proposed coupling structure is used to improve the value isolation between two closely placed antenna elements. The 2×1 MIMO antennas for the frequency band 2.4 GHz and 5.2 GHz is presented and simulated with coupling and without coupling element. The proposed design uses a FR-4 material with the height 1.524 mm. The size of the single patch antenna is 16 X16 mm. Simulation result presented the improvement in isolation from without coupling elements to with coupling element. 15dB and 2 dB isolation improvement found with coupling element for frequency band 2.4 GHz and 5.2 GHz correspondingly.