An Efficient LE-FDTD Method for the Analysis of the Active Integrated Circuit and Antenna Mounted Non-linear Devices
An Efficient LE-FDTD Method for the Analysis of the Active Integrated Circuit and Antenna Mounted Non-linear Devices
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一种用于分析有源集成电路和天线安装非线性器件的高效 LE-FDTD 方法
DOI：
10.1093/ietele/e90-c.9.1776
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
S. Nogi
中科院分区：
文献类型：
--
作者：
K. Fujimori;N. Kawashima;M. Sanagi;S. Nogi
微波电路的发展趋势是高度集成化。大多数用于设计安装线性或非线性器件的微波电路的设计工具采用在频域上使用S矩阵的基本电路理论。谐波平衡法也被用来对应于非线性电路。因此，电磁场的影响，例如，子电路之间通过空间的互耦合几乎被忽略。为了计算这些电路及其周围的电磁场，将时域有限差分法与等效电路模拟相结合，提出了集总单元FDTD（LE-FDTD）方法。通常，即使分析目标是线性电路，FDTD方法也需要很长的分析时间。在本文中，我们提出了一个有效的LE-FDTD方法，以减少分析时间。我们调查其效率与传统的LE-FDTD方法或测量进行比较，因此，它被证实，建议的方法只需要在分析时间的1/10相比，传统的方法。我们还表明，该建议的方法是能够分析特性的有源集成天线（AIA），这是实际上不可能通过使用传统的方法来分析。
The trend of microwave circuits has been toward highly integrated systems. Most design tools for designing microwave circuits mounted the linear or the nonlinear devices adopt the fundamental circuit theory using the S matrix on the frequency domain. The harmonic balance method is also used to correspond to the nonlinear circuit. Therefore, the effect of the electromagnetic field, for example, a mutual coupling between sub-circuits through the space is almost disregarded. To calculate these circuits included its surrounding electromagnetic field, the finite difference time domain method combined with the equivalent circuit simulation had been presented as the lumped element FDTD (LE-FDTD) method. In general, even if an analytical target is a linear circuit, the FDTD method requires very long analytical time. In this paper, we propose an efficient LE-FDTD method to reduce the analytical time. We investigate its efficiency to compare with the conventional LE-FDTD method or measurements, consequently, it is confirmed that the proposal method requires only at analytical time of 1/10 compared with the conventional method. We also show that the proposal method is able to analyze characteristics of the active integrated antenna (AIA) which are practicably impossible to analyze by using the conventional method.