ID |
原文 |
译文 |
13194 |
提出了一种基于区域分解的二维有限元法分析多层印制电路板电源/地平面中过孔转换结构的信号完整性。 |
A two-dimensional finite-element method (FEM) based on domain decomposition was pre- vided to analyze the signa l integrity of via transition in power/ ground planes pair of multllayer printed circuit board (PCB). |
13195 |
过孔电流产生的电磁场呈三维结构,其中,一部分电磁波沿过孔轴向传输,另一部分电磁波在电源/地平面间沿径向传播。 |
The electromagnetic wave produced by the signal current on via barrel distributes in three-dimensional form, part of which propagates along axial direction of via barrel, whlle other part of whch propagates along radal drecton in power/ ground planes. |
13196 |
采用一虚拟柱面将求解区域分割为过孔区和电源/地平面区。 |
The region to be solved is parttoned into via domain and power/ ground domam using a virtual cylindrical surface. |
13197 |
将过孔区建模为以周向磁场为主分量的二维轴对称问题,而将电源/地平面区建为以垂直电场为主分量的二维模型。 |
The via domain is modeled as twodimensional axial symmetrcal problem whose dominant component is circumferential magnetic field, whlle the power/ground planes domain is modeled as another two-dimensional problem whose domi nant component is vertical electric field. |
13198 |
首先,求解电源/地平面区的二维边值问题获得分割边界上节点的波阻抗,然后将该波阻抗代入过孔区模型中分割边界节点的边界条件,从而计算出过孔信号传输的S参数。 |
The wave impedance of the nodes at partition boundary is obtained through solvng the two-d mensonal power/ ground planes boundary value problem, and then the wave mpedances of nodes are substtuted into the boundary condition at partition boundary of via domain, thereupon the S parameters of via signal can be calculated. |
13199 |
所提方法通过模型缩减可实现对微细过孔结构信号完整性的精确快速计算,且采用全波电磁场分析软件对算法的有效性和准确性进行了验证。 |
Higher accuracy and rapid calculaton for signal integrity of tiny via structure are realized by model reduction. The effectiveness and accuracy are validated through full wave electromagnetic simulation software. |
13200 |
无线传能系统工作时在周围空间会激发高频电磁场,因此对无线传能系统有较高的电磁兼容性指标要求。 |
When the wireless energy transmission system works, it will excite high-frequency electromagnetic fields in the surrounding space, so it has high electromagnetic compatibllity index requrements for the wreless energy transmission system. |
13201 |
文中通过对无线微波传能系统发射天线周围环境的电磁辐射进行建模和分析,以及微波传能基站对周围环境的电磁影响。 |
In this paper, the electromagnetic radiation of the transmitting antenna in the wireless microwave energy transmisson system to the surroundng environment is modeled and analyzed. The security of electromagnetic radiation in the space around the wireless energy transmitter is studied. |
13202 |
研究了无线微波传能发射端周围空间电磁辐射的安全性。 |
The electromagnetic influence of the microwave energy transmitting base station on the surrounding envronment is studied. |
13203 |
发射功率为500 W时,通过计算人体头部的比吸收率值,根据国际射频暴露的安全导则,基于理论分析和仿真实验界定了人体电磁暴露的安全区域,划定基站天线主波束、旁瓣、后瓣的安全距离分别为25 m、3 m、2m并给出了无线微波传能基站部署的参考方案,对于无线微波传能的实际应用具有重要的参考意义。 |
When the transmission power is 500 W, the specific absorption rate of the human head is calculated, and then according to the safety guidelines of international RF exposure, the safe area of electromagnetic exposure of the human body is defned based on theoretical analyss and simulation experiments, the safety of the electromagnetic radiation around the wreless mcrowave transmitting energy transmitting end is studied. The safe distances of main beam, side lobe and back lobe of base station antenna are determined to be 25m, 3m and 2m, respectively. A reference scheme for wireless microwave energy transmission base station deployment is also given. |