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提出了一种新型的宽频带微带天线,辐射贴片基本结构为双同心圆环,选用环氧玻璃纤维树脂材质的基板,基板厚度H=1.6mm。将天线结构印制于30mm×40mm的基板上,同时参考地印制于基板背面选定区域。借助Ansoft HFSS 15.0进行仿真,在1~8GHz进行扫频,可用频段为2.44~5.40GHz,相对带宽为76%。给出了反射系数S_(11)、电压驻波比VSWR和辐射方向图的仿真结果,分析了结构参数R_1、R_2、O、W、H_1对天线辐射性能的影响。所设计天线基本可用于(2.40~2.48GHz/5.15~5.35GHz)WLAN、蓝牙、ZigBee、(3.40~3.69GHz/5.25~5.85GHz)WiMAX,具有一定的参考价值。
A new type of broadband microstrip antenna is proposed. The basic structure of the radiation patch is double concentric circular rings. The substrate of epoxy glass fiber resin is selected. The thickness of the substrate is H = 1.6mm. The antenna structure printed on 30mm × 40mm substrate, while reference printed on the back of the substrate selected area. Ansoft HFSS 15.0 was used to simulate and scan at 1 ~ 8GHz. The available frequency band was 2.44 ~ 5.40GHz with a relative bandwidth of 76%. The simulation results of reflection coefficient S_ (11), voltage standing wave ratio VSWR and radiation pattern are given. The influence of structure parameters R_1, R_2, O, W and H_1 on the radiation performance of the antenna is analyzed. The designed antenna can be used for basic (2.40 ~ 2.48GHz / 5.15 ~ 5.35GHz) WLAN, Bluetooth, ZigBee, (3.40 ~ 3.69GHz / 5.25 ~ 5.85GHz) WiMAX, with some reference value.