导波

An experimental formula of bending loss is suggested on the basis of conformal transformation and normalized approach used in analysis of curved optical waveguides.

介绍了分析波导弯曲损耗的保形变换法和归一化方法以及由此得到的波导弯曲半径与弯曲损耗的关系式。

First,the planar waveguide models for Rotman lens and its feed lines which incorporate the dispersion effect with frequencies are set up.Then the aperture electric fields at lens ports are expanded by appropriate waveguide mode functions and substituted into the contour integral equation.The multimode scattering matrix of the lens can be acquired by solving the contour integral equation by using Galerkin method.

首先建立了考虑色散效应的透镜的等效平板波导模型，然后选择适当的波导模式函数展开透镜端口上的场，并利用Galerkin法求解其边缘上电场满足的轮廓积分方程即可得到透镜的多模式散射参数。

These advantages include large single-mode core size, high thermal load capacity and option of well-defined polarization that arise from the flexible waveguide-design and its natural essence.

这种优势包括大模面积、高耐热能力以及偏振控制方案，所有这些均来源于其灵活的波导设计和本身波导特性。

ABSTRACT The design theory of cylindrically conformal slotted-waveguide array antenna fed by curved waveguides is studied.

本文研究用弯波导馈电的圆柱共形波导缝隙阵列天线的设计理论。

In this dissertation, each of the 8 millimeter waveguide to coaxial-cable conversion, power transmission and detector discreteness component building blocks is presented. The theory, design and experiment of each subsystem are discussed.

本论文论述了8mm波导同轴电缆转换和波导功率传输及检波组件的组成结构，以及各分系统的工作原理及其设计方法和试验实施。

Based on silica on silicon, all the manufacture processes are implemented. At last the fabricating of some EDG chip samples is made.

对设计好的集成波导器件，本论文分别采用硅基二氧化硅波导结构，实现了器件制作的全部工艺研究，并实现了器件样品的制作。

To overcome these disadvantages, the structure of traditional CPW was modified and a novel interdigital CPW was designed in this paper.

针对这些不足之处，本文对传统共面波导结构进行改进，设计了改良型的叉指式共面波导结构。

As an example, we calculated the relative errors of numerical wavelength in cylindrical waveguide, and obtained the condition of minimum error for dispersion analysis of waveguides.

以圆波导为例，计算了数值波长的相对误差，得到了分析波导色散特性误差最小的条件。

In the chapter two we analysis the shortcoming of two existing designs of NFOD and present corn waveguide NFOD design, which base on the structure of active waveguide and nonactive waveguide.

第二章分析了国际上研究的两种近场记录光盘技术方案存在的问题，提出了以有源、无源波导结构为基础的波导锥尖近场记录技术方案及相关的四种可行的原理结构。

Results show that the field amplitude and S parameter decrease with the oblique misalignment angle increase.

结果表明：随着倾斜偏心度的逐渐增大，倾斜偏心同轴波导的S21参数和电场的幅值减小，但减小的幅度不是很明显，不会影响同轴波导的正常工作。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。