English translation for "无耗媒质"
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- nondissipative medium
Related Translations:
地下水耗: groundwater depletion 全能耗: total energy consumption 油水耗量: oil water consumption 开路铁耗: open-circuit core loss
- Example Sentences:
| 1. | Under some conditions , although for passive materials , when a plan wave incidents to the interface between a layered lossless material and a layered lossy material , the reflection coefficient of electric field may be greater than unity
在某种条件下，即使在无源媒质中，电磁波在有耗媒质和无耗媒质的交接面上，其组合反射系数可能会大于l 。 | | 2. | 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。 |
- Similar Words：
- "无好奇心" English translation, "无好奇心的" English translation, "无耗电缆" English translation, "无耗拉线" English translation, "无耗滤波器" English translation, "无耗散短线" English translation, "无耗散流" English translation, "无耗损档案格式" English translation, "无耗网路" English translation, "无耗网络" English translation
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