Finally, this article gives the methods to control passive intermodulation, measure unloaded Q and to tune multiplexer.

最后对无源交调，无载品质因数测量，多工器调试这几个工程中实际问题进行了剖析。

A practical method of measuring microwave resonator unloaded Q-factor is presented, which could eliminate phase shift of feed line when Q-factor is estimated by critical-points method.

提出了一种实用的测量微波谐振器无载品质因素的方法，在临界点法的基础上，消除了馈线引入的相移。

The Resonator configuration with the transmission lines which has stepped impedance structure (SIR) is simple. On keeping the Unloaded-Q situation, we can shorten largely the Resonator length.

具有阶跃阻抗结构的传输线谐振器(SIR)结构简单，在不减小无载Q值的情况下，可以大幅缩短谐振器的长度。