结构与等效电路本文提出的*CMRC平面结构如所示，其LC等效电路模型如所示。介质基板采用TaconicCER_1，其介电常数er=9.5,厚度.64mm。图CMRC的平面结构图LC等效电路模型滤波器特性仿真分析主要结构参数对传输特性的影响我们对所示CMRC结构应用HFSS进行建模以及仿真，并分析了主要结构参数对滤波器传输特性的影响。在仿真中我们发现xy1以及y2对滤波器传输特性的影响较大，其影响特性曲线如至所示，由和可知减小x1和y1可以降低谐振频率，从而相应的可以减小低通频率范围，这是因为在等效电路模型中，减小x1或y1都可以提高单位长度的分布串联电感(L和L1)。
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直流配电系统通常由高频开关电源和蓄电池组成，用于为直流系统中控制、信号、继电保护及自动装置、事故照明等提供可靠的直流电源，对其供电的可靠性、稳定性以及供电质量均有着很高的要求。因此对某些服役已久的直流系统进行相应的改造已显的十分迫切。且直流系统改造时不停电，工程改造难度大，采用传统的闭口霍尔电流传感器或者分流器也无法解决，因此可采用开口式霍尔电流传感器来解决改造项目中直流电流计量问题，确保改造过程不停电且安全运行。品设计1.1结构特点开口式霍尔电流传感器在传统闭口霍尔电流传感器的基础上进行研发，结构新颖，外形美观大方。整体由外壳、铁芯、采样线路板及固定树脂构成，外壳材料采用PC/ABS合金，具有耐高温、机械强度高、环保等特点；铁芯采用有取向冷扎硅钢片，具有性能稳定，机械强度高，导磁率极高等特点；线路板与外部接线采用绿色可插拔端子，现场接线方便、可靠。具体结构如所示，产品外观采用分体式设计，为圆孔型，适合直流系统一次母线为电缆时穿过。
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