Design of a 2.4GHz Directional Antenna Array for Wi-Fi Applications

In this paper, a 2 × 2 directional dual-polarization antenna array operating at 2.4GHz for Wi-Fi applications is proposed. This antenna mainly consists of four crossed elements and a feeding network. For the sake of structural simplicity, low profile, and ease of mass production, printed dipoles are adopted as the dual-polarized antenna element. To feed the antenna element, a pair of L-shaped balun transmission lines are designed. The simulated S11, radiation and antenna efficiency are discussed in this paper.