摘要
在"电磁场与电磁波"教学过程中,引入Ansoft工程电磁场有限元分析软件有一定的意义。首先,结合静电场边值问题的拉普拉斯方程求解,基于Maxwell 2D绘出了满足一定条件的矩形接地金属槽内空间等势线的分布;而后,由达朗贝尔方程的解及无方向性天线辐射功率,基于HFSS给出2款半波阵子天线,绘出了入射端口反射损耗S(1,1)、电压驻波比VSWR随频率的变化曲线。结果表明,不同尺寸天线对应不同工作频率。通过空间场线、反射损耗或驻波比曲线的仿真分析,在验证电磁理论的同时,增加学生对场的感性认识,加深他们对电磁场理论及其应用的理解,激发对电磁场的学习兴趣,提高教学效果,同时,培养其解决实际工程问题的能力,为以后从事相关工作打下基础。
It＇s significant to introduce Ansoft software of the engineering electromagnetic field finite element analysis intothe teaching of ＂Electromagnetic Field and Electromagnetic Wave＂ course.Combined with boundary value problem of Laplasseequation,the equipotential line distribution in rectangular grounding metal groove which meets the certain conditions are plottedbased on Ansoft Maxwell 2D.With D＇Alembert equation and non directional antenna radiation power,two half wave antennasare given based on Ansoft HFSS,return lossS（1,1） and variation curve of VSWR with frequency are offered.The result indicatesthat the antennas with different size correspond to different operating frequency.The teaching and measures can increase the stu dents＇perceptual knowledge of electromagnetic field,enhance their comprehension on electromagnetic field theory and its appli cation,initiate their study interest and improve their abilities to solve the practical problems.
出处
《现代电子技术》
2013年第2期97-99,共3页
Modern Electronics Technique
基金
国家自然科学基金(61101052)
浙江省实验教学示范中心建设项目(SB1105001-E)
