一种新型全向微带贴片天线的设计

摘要

A novel omnidirectional microstrip patch antenna used in wireless communication system is proposed in this paper.The antenna has such characteristics as low profile and easy feeding.The operating bandwidth of antenna is 2120~2310MHz,and the relative bandwidth is 8.6% at the center frequency point of 2215MHz. The antenna radiates vertical polarization wave and has omnidirectional radiation pattern in H⁃plane,similar to that of monopole antenna.The maximum gain of antenna is up to 3.0dB in azimuthal plane in the simulation.The antenna model is simulated and optimized by using Ansoft HFSS in the design.%提出了一种在无线通信系统中应用的新型全向微带贴片天线，该天线具有低剖面和易于馈电的特点。天线的工作带宽为2120～2310 MHz，在中心频点2215 MHz处的相对带宽为8．6％。天线向外辐射垂直极化波且在 H平面获得与单极子天线相似的全向辐射方向图。天线在方向角平面上仿真的最大增益可达3．0 dB。在设计过程中使用Ansoft HFSS对天线模型进行仿真和优化。