基于AMC的低剖面双极化天线的设计

Design of Low Profile Dual Polarization Antenna based on AMC

当今社会通信技术迅猛发展,无线通信成为通信领域的重要组成部分,天线作为无线通信的重要收发设备,具有广阔的应用前景。低剖面天线以其轮廓低、风阻小等特点在现代无线通信技术中受到越来越多的关注。结合人工磁导体(AMC)在特定相位内具有反射相位带隙特性设计了一种低剖面、高隔离度、高增益的双极化天线。该天线由上下两层组成,上层是加载缝隙的双极化贴片,下层是加载空气的AMC阵列。与单独工作的天线相比,天线的剖面由原来的λ/4降低到λ/8,增益也有所提高。

Today’s social communication technology develops rapidly,and wireless communication becomes an important part of the communication field.As important transceiver equipment for wireless communication,the antenna has broad application prospects.Low profile antennas receive more and more attention in modern wireless communication technologies for their low profile and small wind resistance.In combination of AMC(artificial magnetic conductor)with reflective phase band-gap characteristics in a specific phase,a dual-polarization antenna with low profile,high isolation and high gain is designed.The antenna consists of two layers,the upper layer is a dual-polarized patch that loads the gap,and the lower layer is an air-loaded AMC array.Compared with the antenna working alone,the profile of the proposed antenna is reduced from the originalλ/4 toλ/8,and the gain of the antenna also improved.