Wideband printed inverted-F antenna with unidirectional radiation pattern

摘要

In this paper, the wideband printed inverted-F antenna with unidirectional radiation pattern is proposed. A rectangular element is loaded to the feeding element and a trapezoid cavity reflector is installed behind the antenna. The proposed antenna has a wide impedance bandwidth (2.08GHz-6.0GHz; 97%) and it has unidirectional radiation pattern in the operating frequency range. The gain are greater than 5dBi in the frequency ranges from 2GHz to 4.5GHz and from 5.3GHz to 6.0GHz. The minimum gain is 3dBi at 4.8GHz.