基于玻璃纤维环氧树脂的双陷波宽频微带天线设计

Design of A Dual Band-Notched Broadband Microstrip Antenna Based on Glass Fiber Epoxy Resin

摘要:

设计了一种新型的宽频微带天线,天线基本结构为回字形,在两个正方环主辐射贴片之间通过四个长方形辐射贴片进行连接。天线基板材质选用玻璃纤维环氧树脂复合材料,大小为30mm×45mm,厚度为1.6mm。天线结构采用电路板印制工艺进行图形化,参考地印制于基板背部。借助Ansoft HFSS 13.0进行仿真,在1~8GHz范围内进行扫频,结果显示其可用频段为2.1~4.3GHz,相对带宽为68%。给出了天线反射系数、电压驻波比、输入阻抗和增益方向图的仿真结果,分析了结构参数对天线辐射性能的影响,实际测量与仿真结果基本一致。

Abstract:

Designed is a novel broadband micro-strip antenna with the shape similar to Chinese character ‘回’. The proposed antenna structure mainly consists of two square rings, and four rectangle radiation patches are printed to connect them. The material of the substrate is glass fiber epoxy resin, with the thickness of 1.6mm and area of 30mm×45mm. Printed circuit board technology is adopted to form the antenna structure, and the reference ground is printed on the back of the substrate. Sweeping frequency from 1~8GHz, the designed antenna can cover the range of 2.1~4.3GHz by Ansoft HFSS 13.0 with the relative bandwidth of 68%. The simulation results of reflection coefficient, voltage standing wave ratio, input impedance and gain pattern are given, and also the influence of structural parameter on radiation performance is analyzed. The actual measurement results are basically consistent with the simulation results.