Miniaturized high gain slot antenna with single-layer director

In this paper, a three-layered slot antenna with compact size and high gain is proposed at 5.4 GHz for Wi-MAX (5.2~5.8 GHz) applications. Simulated gain of 12dBi and measured gain of 10.48dBi are achieved and the impedance bandwidth is 22.59%. The efficiency is measured of 97.23%. Measured and simulated results are in good agreement. The overall size of the antenna is 100×100 ×21.5 mm3.