急2)速度帮忙翻译下~~
来源:百度知道 编辑:UC知道 时间:2024/06/07 08:43:40
F(s)= 中, 为常数,n为多项式的阶次, 为通带边界频率,常数 由通带允许的最大衰减A 来决定,n值则由阻带允许的最小衰减A 来决定。
Along with the development of telecommunications, and put forward further to filter the requirements. Hope the filter, the minimum voice attenuation of the impedance matching connection. The objective requirement of the filter to design theory. The first is that the shape of K filter on two branch network impedance Z Z Z Z: meet below, and raises K = characteristic impedance concept. That two or more network when connected to each network connection, if two of the characteristic impedance equivalent, this connection is called the two ends of the network. This connection is very concise, synthetic network on both sides of the impedance characteristics of network is the first and last a network of impedance characteristic impedance. Synthetic network transmission constant equals the inherent network transmission constant sum, the inherent nature will make the design of filter concise effectively. But also for K type filter of its shortcomings, it in bandpass too smooth within the char