请帮忙翻译我的摘要(毕业论文)

来源:百度知道 编辑:UC知道 时间:2024/09/25 12:41:21
毕业设计的任务是掌握矩量法的基本理论,运用矩量法分析对称天线,基于Matlab研究对称天线阻抗特性和图形仿真并计算出它们的特性参数。
矩量法是将算子方程化为矩阵方程来求解,在求解过程中,计算广义矩阵。一般用双位积分方程对天线的电流分布等特性参数进行分析,然后用矩量法对该积分方程求解,即可得到天线的特性参数。从而可以得出结论:E面方向性图,随着天线长度的倍增,主波束慢慢变窄,方向性增强,慢慢的灰出现旁瓣;功率增益图中的最大增益会随着天线长度L增大而增大,但是增益最大的时候总是在和,这点和E面方向性图一样,但随着波长继续变化,横轴上开始出现小波段的电流分布。还有空间方向性图,随着波长变化,图形变扁,方向性增强,慢慢还会出现旁瓣。最后,将得到的结果和已知结果相比较,相对误差小于10%,达到毕设要求。

关键词:对称天线;矩量法;双位积分方程;Matlab;

Graduation project's duty is grasps the moment method the elementary theory, the utilization moment method analysis symmetrical antenna, studies the symmetrical antenna impedance characteristic and the graph simulation based on Matlab and calculates their characteristic parameter. the moment method is changes into the operator equation the matrix equation to solve, in solution process, computation generalized matrix. Generally with the two-position integral equation to antenna's current distribution and so on characteristic parameters carries on the analysis, then solves with the moment method to this integral equation, then obtains antenna's characteristic parameter. Thus may draw the conclusion: E directional diagram, along with antenna length's multiplication, the main wave beam stricts slowly, the directivity strengthens, the ash slowly presents the side lobe; In the power gain chart's biggest gain will increase along with antenna length L increases, but will