The quasi-elliptic function filter with one transmission zero has the better selectivity than the general Chebyshev filter.
带有一对传输零点的准椭圆函数滤波器相比切比雪夫型滤波器具备更好的选择性。
2
The transmission zeros(TZ) of Quasi-elliptic function filter could be placed in any position, so the attenuation out of band is controllable, then a high selection performance could get.
Quasielliptic filer is a novel high performance filter. Due to its complicated prototype and poor efficiency to extract parameter with classic method, its application has been confined.