Reconsidering the Voltage-Gap Source Model Used in Moment Methods
Reconsidering the Voltage-Gap Source Model Used in Moment Methods
复制标题
重新考虑力矩方法中使用的电压间隙源模型
DOI：
10.1109/map.2010.5525588
复制
发表时间：
2010
影响因子：
3.5
通讯作者：
M. Arts
中科院分区：
文献类型：
--
作者：
R. Maaskant;M. Arts
当目标是对零内部阻抗的理想电压源进行建模时，将增量间隙源设想为无限小宽度的物理间隙可能会令人困惑。此外，我们更喜欢使用局部外加源场（理想电压源），而不是采用空间延伸的外加源场来解释实际的馈电几何结构，然后明确地对馈电结构进行建模。使用洛伦兹互易定理导出输入导纳的平稳公式。证明了电流、电压和场关系符合经典网络理论。尽管如此，我们还是在文献中发现了许多符号不一致的地方。我们还证明，通过稳态公式（表面积分）计算的输入导纳等于馈电点局部计算的导纳，前提是电场积分方程（EFIE）已通过伽辽金方案离散化，并结合对称乘积进行测试。
To envision the delta-gap source as a physical gap of infinitesimal width may be confusing when the objective is to model an ideal voltage source of zero internal impedance. Also, rather than employing a spatially-extended impressed-source field to account for the actual feed geometry, we prefer to use a localized impressed-source field (ideal voltage source), and then explicitly model the feeding structure. A stationary formula for the input admittance is derived using the Lorentz reciprocity theorem. It is demonstrated that the current, voltage, and field relations are in accordance with the classical network theory. Despite this, we found a number of sign inconsistencies in the literature. We also prove that the input admittance as computed through a stationary formula (surface integration) equals the locally computed admittance at the feed point, provided that the electric-field integral equation (EFIE) has been discretized through Galerkin's scheme, in conjunction with a symmetric product for testing it.