一种X波段超宽带F形微带天线设计  

Design of an ultra-wide-band F-shaped microstrip antenna in X-band

作　　者：赵天宇 陈明 张博林 ZHAO Tianyu;CHEN Ming;ZHANG Bolin(Institute of Communication and Information Engineering,Xi’an University of Posts and Telecommunications,Xi’an 710121,China;Institute of Electronic Engineering,Xi’an University of Posts and Telecommunications,Xi’an 710121,China)

机构地区：[1]西安邮电大学通信与信息工程学院,陕西西安710121 [2]西安邮电大学电子工程学院,陕西西安710121

出　　处：《现代电子技术》2019年第17期29-32,共4页Modern Electronics Technique

摘　　要：针对现有天线存在带宽窄、体积大、增益低的缺点,提出一种超宽带F形微带天线。所提出的天线尺寸为18.4 mm×15 mm×1 mm,工作频率为8~12 GHz,覆盖整个X波段。该天线以Taconic RF-35为基板,相对介电常数为3.5。天线分为上下两部分,振子对称分布于基板的上下两侧。采用侧面馈电的方式,正面直接馈电,背面与地相连。通过采用F形贴片以及附加寄生贴片的方法,获得了较好的结果。利用HFSS软件对天线的电磁特性进行分析,并采用矢量网络分析仪以及微波暗室对其进行测量。通过结构参数优化,实现在8~12 GHz带宽内回波损耗小于-15 dB,相对带宽大于40%,以及6.5 dB的最大增益。实验测试结果与仿真设计结果吻合较好。In allusion to the disadvantages of existing antennas,such as narrow bandwidth,large volume and low gain,an ultra wide band(U WB) F shaped microstrip antenna is proposed in this paper. The proposed antenna has a size of 18.4 mm× 15 mm×1 mm and an operating frequency of 8~12 GHz,w hich covers the entire X band. Taconic RF -35 is used as a substrate of the antenna,whose relative permittivity is 3.5. The antenna is divided into two parts. The oscillator is symmetrically distributed on the upper and lower sides of the substrate. The side feed mode is adopted,the obverse side feeds directly and the reverse side is connected to ground. Good results have been obtained by using F shaped patch and additional parasitic patch. The electromagnetic characteristics of the antenna were analyzed by means of HFSS software and measured with a vector network analyzer and microwave anechoic chamber. By optimizing the structural parameters,a return loss of less than -15 dB within the frequency range of 8~12 GHz,a relative bandwidth of greater than 40%,and a maximum gain of 6.5 dB are achieved. The testing results in experiment are in good agreement with the simulation design results.

关 键 词：天线设计 F形微带天线 F形贴片 X波段 寄生贴片 电磁特性分析 

分 类 号：TN823.34[电子电信—信息与通信工程]