A High-Efficient Wideband Transmitarray Antenna with Vias

摘要

This paper presents a high-efficient wideband transmitarray antenna with vias. The transmitarray element consists of two layers of Jerusalem cross patches and four metal vias. Two Jerusalem cross patches are printed on both sides of the substrate and are connected by four symmetrical metal vias. The metal vias can improve the coupling strength between the two patches. By adjusting the size of the patch and the position of the metal vias, the transmission phase of the element is greater than 360 degrees. Then, an transmitarray antenna consists of the proposed elements is designed, manufactured, and measured. The experiment results show that the maximum gain of the transmitarray antenna is 25.7dB, and the corresponding aperture efficiency is 46.6%. The measured 1-dB gain bandwidth is 14.9% (8.7GHz-10.1GHz).