X-Band High-Gain Three-Layer Transmittarray Antenna

In this paper, a three-layer elliptical transmission array element with the parasitic loop is proposed for the design of a transmission array antenna. The transmission phase of the element reaches 306 ° and the transmission amplitude is greater than -1.6dB. A transmitarray with 13 × 13 (195 mm × 195 mm) elements is designed. The simulation results show that the gain at the central frequency of 10 GHz reaches 22dBi and the cross polarization is less than - 15dB. It shows that the designed transmitarray has the characteristics of high gain and low sidelobe. The antenna has great application potential in long-distance communication and radar detection.