stepped impedance meaning in English

分级阻抗

In order to meet the demand for smaller capacity and high rejection in upper - sidebands , the sir ( step impedance resonator ) structure has been used as the construction of the resonator in the filter
滤波器采用sir ( stepimpedanceresonator )结构,实现了滤波器的小型化、较好的带外抑制和高选择性。
Secondly , introducs the main theory of sir ( stepped impedance resonator ) , some characteristic of the sir has been discussed , such as resonance conditions , resonator length , spurious ( higher order ) responses , and equivalent circuits
其次,介绍了阶跃阻抗谐振器( sir )结构和相关原理,同时系统的讨论了sir一些基本特性如:谐振条件、谐振长度、杂散频率和等效电路等。