Patent ID: 11885869
Assignee: nan
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 14:
15. The smart AFC apparatus according to claim 14, wherein the fourth attenuator comprises:
a fixed-value attenuator, connected to the second signal input terminal and configured to: attenuate the reflected wave to generate a third temporary attenuated signal, and output the third temporary attenuated signal to a digital variable attenuator;
the digital variable attenuator, connected to the fixed-value attenuator and configured to: attenuate the third temporary attenuated signal to generate a fourth temporary attenuated signal, and output the fourth temporary attenuated signal to a second fixed-value attenuator; and
the second fixed-value attenuator, connected to the digital variable attenuator and configured to: further attenuate the fourth temporary attenuated signal to generate a fifth temporary attenuated signal, and output the fifth temporary attenuated signal to the third filter.