天线输入的英文

• antenna input

• "天线"英文翻译    antenna; aerial; antenna wir ...
• "输入"英文翻译    import
• "对称天线输入" 英文翻译 :    symmetrical antenna input
• "天线输入导纳" 英文翻译 :    antenna feed-point admittance; input admittance of an antenna
• "天线输入电路" 英文翻译 :    antenna input circuit
• "天线输入功率" 英文翻译 :    antenna input power
• "天线输入阻抗" 英文翻译 :    aerial feed impedance; antenna feed impedance; antenna input impedance; input impedance of an antenna
• "非对称天线输入端" 英文翻译 :    asymmetrical aerial input
• "天线输出" 英文翻译 :    aerial output; antenna output
• "天线输出级" 英文翻译 :    antenna output stage
• "x线输入窗" 英文翻译 :    x-ray input window
• "红外线输入" 英文翻译 :    infrared input
• "抛物线输入" 英文翻译 :    parabolic input
• "纱线输入" 英文翻译 :    yarn intake
• "双线输入" 英文翻译 :    double rail input
• "外线输入" 英文翻译 :    outline input
• "支线输入" 英文翻译 :    branch feeding
• "中心线输入" 英文翻译 :    center line input
• "总线输入" 英文翻译 :    bus in; bus-in
• "天线输出阻抗" 英文翻译 :    antenna output impedance
• "数据总线输入" 英文翻译 :    dbin data bus in
• "跳跃总线输入" 英文翻译 :    skip bus input
• "通道总线输入" 英文翻译 :    cbi channel bus in
• "文件总线输入" 英文翻译 :    file bus in
• "总线输入信号" 英文翻译 :    bus-in signal

• Asymmetrical aerial input
  非对称天线输入端
• Antenna input impedance
  天线输入阻抗
• Antenna feed impedance
  天线输入阻抗
• Antenna input circuit
  天线输入电路
• Antenna input power
  天线输入功率
• The variational theory in electromagnetics and its application in computing the characteristic impedance of conformal coaxial transmission lines are presented in this thesis . input impedance of wire antennas is also computed with a hybrid method of variational principles and the finite - difference time - domain method
  本文主要研究了电磁变分理论及其在共形同轴传输线特性阻抗的求解和与时域有限差分法相结合求线天线输入阻抗等方面的应用。
• Abstract : a new waveguide which can change the wide wall of a rectangular waveguide into a symmetric arc wall is named as a cam - rectangular waveguide . comparing to sectoral waveguide , the new waveguide has the same voltage characteristics and is easier to be produced and fixed . an approximate formula of the dominant mode fields and the normalized conductance of a longitudinal resonant slot cut in the curved wall of a cam - rectangular waveguide are given . a resonant slot linear array in c & x band is designed , in which the slot voltage distribution is equiphase and the input is matched . the input voltage stationary ware ratio and the h - plane pattern of the antenna are measured . the experimental results show the conformance with theoretical results
  文摘:把常用的矩形波导一个宽面改成圆弧形构成的波导称为圆突-矩形波导.这种波导与扇面波导相比：电性能相当；波导管结构更加简单，容易加工，便于安装.文中给出圆突-矩形波导中主模场，圆曲面上纵向槽归一化谐振电导近似公式.设计了c和x波段波导曲面纵向谐振缝隙线阵，缝隙电压相位为同相分布，输入端匹配.实际测量了天线输入端电压驻波比和h面方向图，理论与实验相吻合
• 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。