ABSTRACT The present work aims to propose a new formulation by combining the moment method and generalized equivalent circuit's method (MOM-GEC) to study the performance of a frequency reconfigurable antenna commanded by a PIN diode(s) as switching component(s). This method makes it possible to reduce the 3D problems to an alleviate calculation in the discontinuity plane using the admittance operators. The antenna structure is excited by a localized voltage source and the PIN diode is introduced in the mathematical formulation by a surface impedance model. A parametric study is made to achieve a good approximation of PIN diodes longitudinal dimension ensuring the switch operation. Then we focus on the analysis of reconfigurable antennas controlled by one and two PIN diodes. The simulation results are in good agreement with those obtained by software simulation and they show that it is possible to shift the resonant frequency depending on the PIN diode state.

中文翻译：

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用于无线通信的多频带频率可重构天线的电磁建模

摘要 本工作旨在通过结合矩量法和广义等效电路法 (MOM-GEC) 提出一种新公式，以研究由 PIN 二极管作为开关元件控制的频率可重构天线的性能。这种方法可以减少 3D 问题，以减轻使用导纳算子在不连续平面中的计算。天线结构由局部电压源激励，PIN 二极管通过表面阻抗模型引入数学公式。进行参数研究以实现 PIN 二极管纵向尺寸的良好近似，从而确保开关操作。然后我们重点分析由一个和两个 PIN 二极管控制的可重构天线。