propagation constant造句
例句與造句
- The radiation loss was obtained from the imaginary part of the complex propagation constant and the transition loss was calculated by two - dimension overlap integral method
基于計(jì)算得到的直彎波導(dǎo)的模場分布，采用二維重疊積分法計(jì)算了兩者連接時(shí)的過渡損耗。 - This antenna is a transmission line structure with propagation constant increasing from negative to positive values , providing the backward to forward scanning capability as frequency is increasing
這種天線基于傳輸線結(jié)構(gòu)，其傳播常數(shù)由負(fù)值增加到正值，顯現(xiàn)出一種隨頻率增加而具有的由后向輻射變?yōu)榍跋蜉椛涞奶匦浴? - Based on the semi - vector wave equation under cylindrical coordinate system , the mode distribution and complex propagation constant in bent waveguides were computed by a finite difference method with perfectly matched layer ( pml ) boundary condition
摘要以柱坐標(biāo)下的半矢量波動(dòng)方程為基礎(chǔ)，采用基于完美匹配層( pml )邊界條件的有限差分方法，對彎曲波導(dǎo)進(jìn)行模式求解，進(jìn)而得到波導(dǎo)彎曲引起的輻射損耗。 - As beams transmit mostly in the core of waveguide , also the changes of thickness and refractive index of the sample will quickly and sensitively affect the propagation constant , the information of sample can be obtained through monitoring the propagation constant . 4 . the periodic anti - resonant reflecting layers are presented
由于光束集中在作為波導(dǎo)層的待測物之中傳輸,而由待測物質(zhì)的厚度、折射率等參數(shù)帶來的微小變化均會(huì)引起導(dǎo)模傳播常數(shù)的變化,通過監(jiān)測傳播常數(shù)的變化即可得到待測物質(zhì)的信息。 - The physical meaning for each of the term in the coupling coefficient is stated . in particular , we advance firstly ( as far as our knowledge ) , that the birefringence can cause additional coupling for the directional coupler . then , taking the ti - diffused linbo3 directional coupler and the ti - diffused linbo3 with gradient refractive index for examples , we make the numerical simulation for the coupling coefficient or the propagation constant , which prove that the birefringence has played a crucial effect on the propagation constant and the coupling between the modes that we can not neglect
第二，我們推導(dǎo)出了弱導(dǎo)近似下各向異性光波導(dǎo)在任意微擾下的非正交耦合模理論，得到了物理意義鮮明的耦合波方程和耦合系數(shù)表達(dá)式，指明了耦合系數(shù)所包含的四項(xiàng)各自的物理意義及在不同條件下的取舍，首次提出在方向耦合器中雙折射將引起附加的耦合，并以鈦擴(kuò)散鈮酸鋰方向耦合器和折射率漸變分布的鈦擴(kuò)散鈮酸鋰矩形波導(dǎo)為例對耦合系數(shù)進(jìn)行了數(shù)值模擬，充分體現(xiàn)了雙折射項(xiàng)對傳播常數(shù)的影響。 - It's difficult to find propagation constant in a sentence. 用propagation constant造句挺難的
- To illustrate the superiority of this type of transition , the author adapted the local normal mode ( lnm ) based on couple - mode theory to explain the coupling between two lowest order modes along the transition . for the two important parameters , propagation constants difference between the two modes apy and mode coupling coefficient cy , which denoting power coupling between lnms , the approximation expressions using structure parameters were worked out . then the author compared three typical different transitions according to the demanding of power coupling , at last concluded that the parabolic - type transition can transport the light in shortest length with lowest loss
對于表征局部標(biāo)準(zhǔn)模之間功率耦合的兩個(gè)重要的參數(shù)_ ( ij ) (模式傳播常數(shù)差)和c _ ( ij ) (模式耦合系數(shù)) ，推導(dǎo)了用器件結(jié)構(gòu)參數(shù)表達(dá)的近似公式，然后根據(jù)功率耦合的需求，在常見的三種不同輪廓的過渡區(qū)之間進(jìn)行了比較，得出了拋物形輪廓過渡區(qū)能夠使光束在最短尺寸內(nèi)以最低損耗通過波導(dǎo)的結(jié)論。 - In this paper a newly develoed helical coordinates is used to make out the solution of electromagnetic fields in the helix gap and calculate dispersion characteristics of tape helix slow wave structure for the first time . strict boundary conditions for magnetic fields are adopted and are treated rigorously by fourier expansion . besides , the radial propagation constant of every layer in the dielectric - loaded region is differentiated . some of practical tape helix slow wave structures have been calculated for dispersion characteristics and the calculated values accord with measured values very well . the authors also compare the calculated results with experiments for different structures by changing tape thickness or other structure parameters and find that the theory in the paper is universal
本文首次運(yùn)用螺旋坐標(biāo)系給出了帶狀螺旋線縫隙內(nèi)的電磁場解，并據(jù)此計(jì)算了帶狀螺旋慢波結(jié)構(gòu)的色散特性.文中采用了嚴(yán)格的邊界條件，并以傅立葉展開進(jìn)行了嚴(yán)格的數(shù)學(xué)處理.另外還首次對有介質(zhì)區(qū)域內(nèi)各層的徑向傳輸系數(shù)作了區(qū)別.本文使用這種方法計(jì)算了我們已研制的一些寬帶高功率行波管所用的慢波線結(jié)構(gòu)的色散特性，理論與實(shí)驗(yàn)符合得很好.我們還計(jì)算了不同結(jié)構(gòu)參數(shù)對色散特性的影響，并與實(shí)驗(yàn)作了對照，發(fā)現(xiàn)本文的理論有一定的普適性