楼主的腔体滤波器仿真，五个空腔试过介质为真空（vaccum）和空气（air）,右下角的那个腔体在减去延伸进腔体的橙色圆柱时，报错：
Project6 (J:/HFSS Project/)
[error] Body could not be created for part Box4 because of invalid parameters of this part or some of its parent part/coordinate system. (08:08:44 AM Jan 10, 2024)
该标紫的圆柱就是黄铜材质的Cylinder8，它的参数如下：
它依赖的坐标系如下：
腔体本身的参数如下：
Project6 (J:/HFSS Project/)
[error] Body could not be created for part Box4 because of invalid parameters of this part or some of its parent part/coordinate system. (08:08:44 AM Jan 10, 2024)
该标紫的圆柱就是黄铜材质的Cylinder8，它的参数如下：
它依赖的坐标系如下：
腔体本身的参数如下：
