考虑器件标称化的带通滤波器仿真优化设计

Simulation and optimization design of band-pass filter considering device normalization

滤波器的传统设计方法计算出的电感、电容值并不能与市场上购置的电感、电容值完全对应,导致制作的滤波器技术指标降低。为此提出一种改进的LC带通滤波器优化设计方法,借助ADS对电路进行仿真优化,使仿真结果更接近于实际测试值。与传统方法相比,文中设计的滤波器提高了实际滤波器的性能;并且通过优化,使所有元件值均为市场所售器件的标称值,从而解决了因购置器件值与计算值不完全一致而导致的滤波器性能恶化。

The inductance and capacitance values calculated by the traditional filter design method can not match the values of inductance and capacitance purchased in the market,which leads to technical index decrease of the developed filter.Therefore,an improved optimization design method of the LC band-pass filter is proposed.The ADS is used to conduct the simulation and optimization of the circuit,so as to make the simulation results more closer to the actual test values.In comparison with the traditional method,the filter designed in this paper can improve the performance of the actual filter,and make all component values match nominal values of the devices sold in the market by means of optimization,which resolves the performance deterioration problem of the filter caused by the fact that the values of the purchased devices are not exactly the same with the calculated values.