适用于物联网多频段通信的矩形微带天线设计

为满足主流物联网通信技术的应用需求，提出一种新型的矩形微带单极天线，适用于多频段通信，如射频识别、全球定位系统和无线局域网等。该矩形微带天线由一个带两个U形槽的矩形贴片和一个带两个长方形槽的接地面组成，具有四个工作频段，当谐振频率分别为1.22GHz, 2.47GHz, 3.61GHz和5.60 GHz时，相对带宽为25.7%（1.12~1.45 GHz）、25.3%（2.24~2.89 GHz）、15.7%（3.40~3.98 GHz）以及13.6%（5.21~5.97GHz）。仿真与实测结果显示，该天线的工作频段数量更多且相对带宽更高，在各工作频段内具有良好的全向辐射特性。

Design of rectangular micro-strip antenna for multi band communication in Internet of things

In order to meet the application requirements of the mainstream Internet of things communication technology, a new type of rectangular micro-strip monopole antenna is proposed, which is suitable for multi band communication, such as radio frequency identification, global positioning system and wireless local area network. The rectangular micro-strip antenna is composed of a rectangular patch with two U shaped slots and a ground surface with two rectangular slots. The antenna has four working frequency, when the resonant frequency is 1.22GHz, 2.47GHz, 3.61GHz and 5.60 GHz, the relative bandwidth is 25.7% (1.12~1.45 GHz), 25.3% (2.24~2.89 GHz), 15.7% (3.40~3.98 GHz) and 13.6% (5.21~5.97GHz). Simulation and experimental results show that the number of working bands of the antenna is more and the relative bandwidth is higher.