rectangular patch meaning in English
直角堵漏垫
Examples
- Finally applies this structure in antenna , and gives a example of rectangular patch antenna . from the example , it can be observed that the high impedance surface can restrain the backwards radiation . 2
最后将这种高阻抗表面运用到天线上,给出了一个矩形贴片天线的仿真例子,从中观察到了高阻抗表面能抑制后向辐射,增强辐射效率的作用。 - The algorithm of construction of a fractal interpolation surface patch based on rectangular patch is presented in the modeling , the construction algorithms of osteons and volkmann canals are designed , and the distribution of volkmann canals , the size and structure of osteons can be regulated and controlled according to different area , so it can satisfy the needs of the internal microstructure model
在建模中，提出了矩形平面片生成分形插值曲面片的算法，完成了骨单位、浮克曼管的构造算法，并实现了根据不同区域对浮克曼管的分布、骨单位的大小、结构等特征进行灵活调控，以满足内部微细结构模型的要求。 - In chapter 4 , method of moment ( mom ) solution of transient electromagnetic scattering by perfect conducting surfaces is discussed by dealing with time - domain integral equations ( tdie ' s ) . rectangular patches model and triangular patches model are compared and their applications are exploited . in the mean time reference [ 42 ] and [ 61 ] are recruited
其中第四章通过求解时域积分方程给出了良导体表面瞬态电磁散射的矩量法解，比较了矩形贴片模型和三角贴片模型并拓展了它们的应用，补充了文献[ 42 ]和[ 61 ]的内容；第五章工作重心是计算机显示器屏蔽箱体的设计，对通风问题给予了充分考虑。 - Firstly , model of bone internal microstructure is constructed by basic structure unit ( rectangular patch ) ; secondly , fractal interpolation surface patch is constructed by processing rectangular patch ; thirdly , stl model of bone internal microstructure is formed by transforming model data according to stl formation
采用面向对象的方法，提出并实现了人工活性骨内部微细结构的建模方案：首先以矩形平面片为基本构造单元片，构造出内部微细结构的模型。其次，每个矩形平面片生成分形插值曲面片。 - The conformal microstrip antenna with some unique character has been applied in many fields , especialy on speedy objects . in this paper , an efficient fdtd algorithm is introduced to analyse the microstrip antenna . firstly , the fdtd formula in descartes coordinate system and in cylindrical coordinate system are obtained from the time _ dependent maxwell equations using the yee algorithm in a calculating region where the dielectric parameters are independent of time and space . the choice of the space discretization units and the time discretization interval are discussed which are decided by the accuracy and stability respectively . the shape and setup of the excitation source are discussed too . the excitation source is chosen to be gaussian pulse in shape . secondly , the mur ' s first - order and second - order boundary condition are deduced in cylindrical coordinate system . the methods of transforming radiation fields from near zone to far zone in the frequency domain and in the time domain are presented when fdtd is applied to analyse the characteristics of far zone . finally , three kinds of microstrip antennas are analysed . they are a slot antenna that lies on a plane ground of a microstrip , a slot antenna that lies on a cylindrical ground of a microstrip and a microstrip line _ fed aperture coupled stacked rectangular patch antenna in cylindrical coordinate system
本文从麦克斯韦旋度方程出发，建立了笛卡儿坐标下无源空间中均匀无耗媒质的fdtd基本方程和圆柱坐标下无源空间中均匀无耗媒质的fdtd基本方程，详细讨论了fdtd法计算中时间步长和空间步长的选取原则以及激励源的类型和设置；推导了mur一阶和二阶边界条件在圆柱坐标下的差分格式；给出了在用fdtd法计算天线的远场辐射特性时必需采用的频域和时域近场远场变换技术；最后用fdtd法计算了平面微带缝隙天线、柱面共形微带缝隙天线和柱面共形微带层叠天线的输入阻抗和远区辐射场，并分析了天线的一些参数的变化对天线输入阻抗的影响，得出了一些有用的结论。