Introduces the design basis on quasi-elliptic function filter, concluding the relation between phase and TZ.3.
2.准椭圆函数滤波器设计基础。 给出相位与传输零点的关系。
参考来源 - 高选择性准椭圆函数滤波器的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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。
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.
准椭圆函数滤波器的传输零点，可以位于阻带内的任意位置处，这能更加灵活地对滤波器的带外抑制度进行调节，其矩形系数可以做得很高。
Semiopenloop microstrip resonators are utilized to realize the quasi elliptic function response.
该滤波器采用半开环结构微带谐振腔，产生准椭圆函数响应。
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