This program Is an IR bandpass filter which filters the signal that is needed for processing.

射频低通滤波器、带通滤波器、Chebyshev滤波器等射频滤波器的设计。 对新手入门非常有用，也有助于老手进一步理解射频滤波器中各种器件 参数对滤波器幅度频率特性、相位频率特性的影响。(RF filters such as RF low pass filter, bandpass filter, Chebyshev filter and so on. It is very useful for beginners, and it helps the old hands to further