| 1. | Magnetic current converter brake is a new brake with bright prospect
摘要磁流变制动器是一种具有良好发展前景的新型制动器。 |
| 2. | The expressions of external and internal coupling were derived from the reciprocity theorem by analysing slot voltage distribution in this paper , which invoked magnetic current to slots
缝隙之间的内(外)部互耦是从缝隙的口径电压出发、将缝隙等效为磁流源、通过互易原理而获得。 |
| 3. | 3 . a ~ vaveguide h - t coupler with a large aperture and an inductive post is analyzed where the magnetic current distribution is assumed on the aperture and the current on the surface of the post
将窗口等效为等效磁流源，而把匹配圆棒等效为电流源来处理，分析计算了这种耦合器的耦合特性。 |
| 4. | An electric field integral equation is developed to relate the near fields to the equivalent magnetic current . a moment method procedure is employed to solve the integral equation by transforming it into a matrix equation
文中给出了关于测量近场和等效源之间关系的电场积分方程，并通过矩量法将积分方程转化为矩阵方程。 |
| 5. | In this part we start form the magnetic field integral equations ( mfie ) and then establish the matrix equations for the unknown magnetic currents on the surface of slot aperture . to solve this problem , piece - wise sinusoidal basis and galerkin ' s method are used
首先，利用理想缝隙假设建立关于缝隙内外口面磁流密度的磁场积分方程，然后采用分段正弦基galerkin方法将积分方程离散为关于展开系数的矩阵方程。 |
| 6. | This method utilizes near - field data to determined an equivalent magnetic current source over a fictitious surface which encompass the em radiation source . this magnetic current , once determined , can be used to ascertain the near and the far field
将近场的测量数据用来确定一个等效磁流源，该等效磁流源位于包含电磁源辐射口面的假设平面上，当确定了这个等效磁流源以后，利用它计算出辐射源的近区场和远区场。 |
| 7. | In the case of thin slot , taking the effect of wall thickness into account , the coupler is analyzed with the slots replaced by equivalence magnetic current using the equivalence principle . the integral equation system is fonned and calculated by the moment method
对于细长缝隙的情况，考虑了波导壁厚，利用等效原理将缝隙等效为磁流源在主波导和耦合波导中的作用，根据电磁场连续性条件建立积分方程，并用矩量法求解，进而求出耦合器的散射参数。 |
| 8. | Two cases are analyzedxonducting target with coat and dielectric target with coat . for the conducting target with coat , triangular patches are used to model the surfaces of the coat and the conducting object . now there have equivalent electric current and magnetic current on the surface of the coat , but only has equivalent electric current on the surface of the conducting object . the rwg vector base functions are used to denote equivalent electric currents and magnetic current . three integral equations should be built to obtain the unknown current coefficients ; for the dielectric object with coat , triangular patches are used to model the surfaces of the coat and the dielectric object . now there have equivalent electric current and magnetic current not only on the surface of the coat but also on the surface of the dielectric object . this time four integral equations should be built to obtain the unknown current coefficients
对于涂层导体目标，将涂层外表面和导体外表面进行三角形面元剖分，在涂层外表面有等效电磁流，导体外表面仅有等效电流(无等效磁流) 。将这些等效电磁流用rwg矢量基函数表示，需建立三个积分方程来求解未知的电磁流系数；对于涂层介质目标，将涂层外表面和内层介质外表面进行三角形面元剖分，在涂层外表面有等效电磁流，内层介质外表面也有等效电磁流，这时需建立四个积分方程来求解未知的电磁流系数。 |
| 9. | Beginning with the equivalence principal , two types of near - field to far - field ( nfff ) transformation s are discussed systematically , i . e . frequency - domain nfff ( fd - nfff ) and time - domain nfff ( td - nfff ) . in td - nfff transformation , the concurrent - processing approach is used , where the contributions to far - field from the tangential electric current and magnetic current on the equivalence surface are calculated " on - the - fly " in step with the fdtd simulation . as a result , it is not necessary to store the tangential current components for every equivalence surface at every time step , and therefore reduce considerably computer storage required for the td - nfff transformation
在理论部分，本文从电磁场的等效原理出发，系统、详尽地论述了频域和时域近远场变换的基本思想，在时域近远场变换中采用实时的变换方法，即每进行一个时间步的迭代，就计算一次等效面上该时间步的切向电流和切向磁流对远场各方向的贡献，这样就使时域近远场变换不需要储存等效面上每一个时间步的切向电流和切向磁流，大大减小由于近远场变换而增加的计算机内存需要量。 |
| 10. | Second , several feasible methods with which to incorporate the microwave devices into the fdtd simulation of microwave active circuits are discussed . direct implementation places the circuit element on the edge of a fdtd cell as a two - terminal element in the device region . another implementation is to place effective electric currents , or equivalently , current sources , voltage sources and effective magnetic current sources
接着研究了如何把微波器件加入微波电路中进行fdtd模拟的几种方法，其中一种方法是把微波器件作为一个二端口元件放置在一个网格的边上直接进行fdtd运算，另外一种方法是在有微波器件的区域使用有效的电流来代替微波器件，或者等效的源，包括等效电流源，等效电压源和等效磁流源。 |
