Abstract: In order to utilize the performance of 28 GHz wideband array antenna more effectively, it is very important to simulate and design the impedance matching of wideband array antenna series and parallel feed network. In this paper, the electromagnetic simulation software Ansys Electronics is used to simulate the matching circuit of the antenna, and the integrated simulation of the antenna matching network and the antenna is realized. The simulation results show that after the impedance matching between the bits, the standing wave ratio of the series parallel feed network electrical port of the 28 GHz broadband array antenna is reduced from 20.48 to 1.18, which greatly reduces the transmission loss.