A broadband and high gain yagi antenna with complex parabolic boundary reflector

A kind of broadband and high gain printed Yagi antenna with complex parabolic boundary reflector is proposed. This kind of antenna has low profile, wide bandwidth and high gain, as well as simple feeding and so on. The commercial simulation software, CST Microwave Studio® has been used to analyze the surface current on the metal radiator of antenna. The model of dipole array, which is equal with the antenna's radiation characteristic, is also established and antenna's radiation mechanism can be explained. Finally, antenna prototype has been manufactured according to the simulated results. Experimental results show that the reflection coefficient of this antenna is less than −10dB in 2.12–3.37GHz, and the gain in working band can stably achieve 4.0–5.4dBi. Besides, the size of the antenna is only 120mm×50mm, which can be used in the field of WLAN.

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