in waveguides造句

• Analysis of diode grid equilent impedance in waveguide using emf method
  方法分析波导中二极管栅格的等效阻抗
• Microwave devices . electromechanical coaxial and in waveguides relays and switches
  微波装置.机电同轴和波导继电器及开关
• An efficient fdtd scheme which deals with the bolt tuner in waveguide power divider is described in this thesis
  对于分析过程中遇到的波导功分器件上的调配螺钉的仿真计算，文中也给出了比较有效的fdtd建模方法。
• In this thesis, applications of several new algorithms of fdtd and mom ( method of moment ) in waveguide slot antenna array are studied
  本文主要研究了时域有限差分法(fdtd)的几种新技术以及矩量法在波导缝隙阵中的应用。
• The distribution of electromagnetic field in waveguide is the elementary question of guidewave optics, many methods are used to solve this question
  电磁波在波导中传输的场分布问题，是导波光学的基本问题，已有很多种方法求解。
• The electric field, magnetic field, critical frequency, surface current, power transmission and attenuation, as well as te and tm modes in waveguides are discussed
  给出计算等效矩形截面波导的te模和tm模、电磁场、临界频率、波导壁电流、功率传输和衰减的公式。
• Dielectric discontinuities in waveguides are analyzed by eb-fem in combination with perfectly matched layer ( pml ) absorbing boundary condition ( abc ) . the influences of the number of dielectric blocks and the permittivity of the dielectric blocks on the s parameters are discussed
  讨论了波导中介质块的多少以及介电常数特性与s参数的关系，研究了pml的不同构造对s参数求解精度的影响，得出了一些对工程设计具有参考价值的结论。
• This equation solving method overcomes the shortcomings of simulation software on thermal field analysis, strongly complements the commonly used 1-d temperature distribution to analyze thermo-optic devices in literature . the results avoids complicated form of solutions provided by fourier transform method, and thereafter lend itself to analyze the influence of thermo-optic to attenuation characters and power consumption in waveguide
  这种方法克服了模拟软件在热场分析上的不足，是对现有文献多数采用一维温度分布作为热光器件分析的有力补充，也避免了傅立叶变换法的复杂形式，为后面分析热光效应对器件衰减性能和功耗的影响打下了基础。
• In this paper, first, 1 made a study of the distribution of electromagnetic field, energy, power, reflection coefficient and transmission coefficient in waveguide with piecewise different dielectric constants . then, i simulated the behavior of propagation of am signal and gauss pulse signal through the waveguide by magic code, and gave the plots of electromagnetic field, energy, ponyting vector and their spectrums at different time and different position
  在本论文中，作者首先推导出分段填充不同介质的波导中的电磁场分布、能量、传输功率以及反射系数和传输系数的表达式。然后，采用magic程序模拟了这种结构的波导中的电磁场的传播情况，得到了在不同时刻和不同位置处的电磁场分布图、能量图、坡印廷矢量图以及它们的频谱图。
• The article set up 2-dementional steady heat conduction model and equations based on buried channel waveguide, and solved the equations by separating variables method . using mathcad, 2-d temperature distribution and the influenced refractive index distribution by thermo-optic effect were plotted in waveguide section area
  本文先以埋入式沟道波导为例，建立了二维稳态热传导方程模型，用分离变量法推导了方程解，并用mathcad2000在波导截面上绘出了二维温度分布图和受到热光效应影响的折射率分布图。
• On the base of mathematical domain decomposition method ( ddm ), this paper investigates systematically the quasi-static problems based on laplace equation, the transmission problems in waveguide based helmholtz equation and the three-dimensional scattering and radiation problems based on maxwell equations . the theoretical system is built for the further exploration of ddm in electromagnetic problems
  本文在区域分解法已有的数学基础上，从基于laplace方程的准静态问题，到基于helmholtz方程的波导传输问题以及基于maxwell方程的三维散射辐射问题，系统地探讨了该方法在电磁领域中的应用，为进一步扩展应用研究建立了理论体系。
• In this paper, first, the study of the distribution of electromagnetic field, energy, power, reflection coefficient and transmission coefficient in waveguide with piecewise different dielectric constants are studied . then, the behavior of propagation of am signal and gauss pulse signal through the waveguide are simulated by magic code ， and the plots of electromagnetic field, energy, ponyting vector and their spectrums at different time and different position are obtained . and, the group velocity and energy velocity of wave packet through barrier are calculated
  从90年代开始，emig和martin、landauer等人研究了分段填充不同介质的波导中的电磁脉冲的传播。在本论文中，作者首先推导出分段填充不同介质的波导中的电磁场分布、能量、传输功率以及反射系数和传输系数的表达式,然后，采用magic程序模拟了这种波导结构中电磁波的传播情况，得到了在不同时刻和不同位置处的电磁场分布图、能量图、坡印廷矢量图以及它们的频谱图,并由模拟结果计算了波包穿越势垒的群速和能量速度。
• The paper did scrupulous discussion and investigation on the interaction between electron beam and standing wave field in the gyroklystron, which is typical in the electron cyclotron maser which action rf system is resonant cavity . the main works of this dissertation are listed as following : first, solving field in absorbing material and field matching method were used to derive the dispersion equation in waveguides and field matching formulas of hybrid modes in an abrupt cavity with absorber . based on the theoretical analysis, numerical simulations of the cavities in gyroklystron were done
  主要工作有:一、采用吸收介质分区求解及场匹配的方法推导出含有吸收层的色散方程,单侧加入吸收介质及两侧均加入吸收介质两种突变结构混合模场的匹配方程,在理论分析的基础上,通过相关的模拟软件,建立了回旋速调管介质加载中间腔的计算模型,对回旋速调管中间腔进行了数值模拟,并给出了主要的计算结果。
• We studied the multimode coupling matrix of the key waveguide discontinuity, waveguide step, with the modal fields expansions in waveguides . and obtained the relations with the multimode coupling matrix, the generalized admittance matrices and the generalized scattering matrices . we have compiled some subroutines in fortran 95 programming language to compute the multimode coupling matrix, admittance matrices, scattering matrices and their operates with each other
  并利用fortran95程序设计语言编写了用来计算波导阶梯的多模耦合矩阵、多模耦合矩阵与广义导纳矩阵的级联、广义导纳矩阵之间的级联以及广义导纳矩阵和广义散射矩阵之间的互相换算等的矩形波导平面不连续性模式分析的子程序。