The Design of An All-Metal Low Profile End-Fire Array Antenna with High Gain

Abstract

An all-metal low profile end-fire array antenna with high gain is proposed in this paper. The proposed antenna consists of a metallic ground, a transmission microstrip line and sixteen pairs of radiating elements. Each element is composed of a horizontal patch and a vertical patch, where the structure of the vertical patch is either rectangular or elliptical. One end of the element is short-circuited to ground, while the other end is connected to the transmission line. The energy from port 1 excites each radiating element along the transmission microstrip line and is finally connected by port 2. The all-metal structure reduces the manufacture difficulty and cost. Finally, the all-metal low profile end-fire array antenna is simulated. Simulated result shows the antenna has a wide bandwidth of 42.1 % in the range of 3.83 GHz to 5.87 GHz and a high gain of 15.0 dBi at 5.0 GHz.