摘要
为提高天线的增益和带宽,对传统的短背射天线进行了改进,采用抛物面代替主反射面底部的平面,用水滴型的宽带振子作为馈源进行馈电,通过CST微波工作室仿真软件仿真调整天线的结构参数实现较高的增益和带宽。仿真结果表明,该天线在中心频率处增益可达到18.65dB,在3.0～3.8GHz范围内VSWR小于2。天线效率可达83%,根据仿真结果制作实物的测试结果与仿真结果基本吻合。
The modification of traditional short backfire antennas is designed in this paper which has the advantages of a simple structure, easy to feed, high gain and so on. The configuration of the antenna is special. It has a parabolic main reflector with a surrounding rim. the subsidiary reflector is a circular metal disk and it is fed with a droplike half-wave dipole. Then the mode is being simulated with the simulation procedure-CST Microwave Studio. The simulation result of directional pattern shows us that the gain of the antenna can attain 18. 65 dB at the center frequency and VSWR is lower than 2 at the range of 3.0-3. 8 GHz. At last, we made a production according the dimension from simulation result and the actual measurement results is consistent with the simulation results.
出处
《电子测量技术》
2009年第5期17-20,共4页
Electronic Measurement Technology
关键词
短背射天线
高增益
改进型
short backfire antennas
high gain
modification
