The modal parameters of the printed circuit board ( PCB) were calculated using finite element method, and the weaknesses of PCB were found using effective modal masses and mode shapes. 采用有限元方法对印制电路板进行了模态分析,依据有效模态质量和模态振型分析了振动环境下配制电路板的薄弱环节。
By taking the rectangular metal patch on a printed circuit board as the radiation element and by cutting a C-shaped slot in the rectangular patch, a frequency band notch is implemented. 该天线采用印刷电路板上的矩形贴片作为辐射单元,通过在矩形贴片上开一个C形槽来实现陷波功能。
Study on an Umbrella Printed Dipole Radiating Element 伞形印刷偶极子辐射单元研究
In this paper, we introduce a design of printed dipole antenna element used in radar array antenna, using computer simulation. 介绍了用于雷达阵列天线的印制偶极子天线单元的计算机仿真设计。
In this dissertation, the dynamic responses of PCB ( Printed Circuit Board) assemblies during drop/ impact process are dealt with by using FEA ( Finite Element Analysis) software platform such as ANSYS and LS-DYNA. 本文通过有限元软件ANSYS和LS-DYNA来分析印刷电路板组件在跌落过程中的动态响应。
This module can show the contactor control schematic diagram and the electronic control circuit schematic diagram, printed circuit board drawing and element list. 该模块提供了接触器控制原理图及电子控制电路原理图、印刷电路板图及元件清单。
Balanced micro-strip line is utilized as feed line, printed dipole is adopted as radiation element, and a matching network is employed for tuning the input impedance of the antenna. 该天线采用平衡微带线作馈线,以印刷振子作为辐射单元,末端采用匹配电路对其输入阻抗进行匹配。
Design of Printed Dipole Antenna Element by Simulation 印制偶极子天线单元的仿真设计
Complete time-domain radiation model of UWB printed monopole antennas, which includes the contributions of monopole element, ground plane and dielectric substrate, was summarized. 完善了超宽带印刷单极子天线的时域辐射模型,即单极子辐射、接地板辐射和微波介质基片寄生辐射。
At last, the inverse perspective transformation and gray level interpolation are performed to correct the distorted QR code image. Thirdly, a correction algorithm for the QR images printed on the curved objects is proposed based on the finite element shape function. 最后通过反透视投影算法和灰度插值算法,将失真的QR码符号有效地校正过来。再次,针对印制在曲面物体上的QR码图像,提出了一种基于有限元形函数的校正算法。
The printed dipole is adopted as radiation element and arranged in vertical and horizontal plane to construct an antenna array. 本设计以印刷振子为辐射单元,在垂直面和水平面排列构成天线阵列。