求教ads中优化耦合滤波器时出现的问题

05-08

我用ads优化耦合滤波器时出现错误提示“error detected by hpeesofsim during nominal optimization "Optiml",optimgoal/yieldspec/doegoal did not find any relevant simulation point”.这个是什么原因啊?请高手指点啊

是不是那些元件参数没有设置为可进行优化啊