Signal filter: signal filters can be useful in a number of circumstances, such as when spuriousnoise is inadvertently added to the signal as it travels through the switch.
信号滤波：在许多的环境下，信号滤波是非常有用的，例如当信号通过开关时会加入寄生噪声时。
2
It provides superior signal quality, low phase noise, good harmonic suppression and low spurious.