A planar printed quasi-Yagi antenna with a parabolic reflector for WLAN

The simplicity and intuitive design of traditional planar printed quasi-Yagi antennas has led to its widespread popularity for its good directivity. In this paper, a planar printed Quasi-Yagi antenna with 3 directors and 1 concave parabolic reflector, operating in S-band, is proposed. The impedance and radiation characteristic are simulated with CST-Microwave Studio, and the antenna is fabricated and measured. The measured results indicate that the antenna which operates at 2.25-2.63GHz can achieve an average gain of 9.45 dBi within the operating frequency range, especially a highest gain of 10.3dBi at 2.45GHz, which can be widely used in WLAN.