A Quad-AMC-Backed Multi-Band Asymmetrical Antenna System Characterized With Low Profile

A quad-AMC-backed multi-band antenna system is designed in this paper, which is characterized by high gain and low profile, for the application in the frequency bands of 1.74, 2.41, 2.96, 3.86, and 5.07 GHz. Among them, the operating frequency point of this system is about 2.96GHz, which is new frequency point compared to the single antenna. The measured antenna gains at the frequency points have been improved with 3.2, 3.3, 2.16 and 1.5 dB, respectively. As an asymmetrical antenna structure is designed, SMA terminals are introduced in the simulation in order to get closer to the real measured results. The distance between antenna and SMA proposed in this paper is only 3mm, which is more conducive to the application in 5G mobile communication systems, the interconnection of all things (IOT) and in other fields.