1、

On the basis of simulation on three-element ESPAR antenna, the current relationship between the central driven element and parasitic elements including a director and a reflector is analysed and the best loading reactance values to meet the current relationship are found.

在仿真计算的基础上,分析了三单元ESPAR阵列天线中心激励振子、引向振子和反射振子之间的电流关系,找出了满足电流关系的最佳加载电抗值。

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2、

At last, a slot unit is etched on the parasitic element. By changing the size and location of the slot, the frequency and pattern characteristics of the two-element Yagi patch antenna are changed.

最后,在寄生贴片上引入一种槽单元,通过改变槽单元的尺寸和位置,改变了八木天线的频率特性和方向图特性。

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3、

As for the reader antenna, it achieved circular polarization by using fractal patch antenna structure, slotting on the patch, adding parasitic element.

对于阅读器天线,采用分形贴片的微带天线结构,并且在贴片表面开槽和外围加寄生元,实现了天线的圆极化。

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4、

Based on the analysis, three single-port 1-dimension 5-element pattern reconfigurable Yagi patch antennas are designed. By switching the states of the parasitic elements, the radiation beams can scan in the E-plane in the upper space.

在此基础上,设计了三个单端口馈电的方向图可重构五元微带八木天线,通过开关调节寄生贴片的状态,可使天线在E面上半空间实现波束连续扫描。

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5、

The idea of Appel's hierarchical algorithm handling the many body problem is implemented in the direct boundary element method ( BEM) for computation of 3 D VLSI parasitic capacitance.

文中将Appel处理多体问题的层次式算法思想实现于直接边界元法,用以计算VLSI三维互连寄生电容。

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6、

The quasi multiple medium ( QMM), based on the direct boundary element method, is a fast algorithm for parasitic capacitance extraction.

虚拟多介质是一种基于直接边界元的寄生电容快速提取方法。

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