Patent ID: 11894942
Assignee: NANNING FULIAN FUGUI PRECISION INDUSTRIAL CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 2:
3. The communication system based on DOCSIS protocol according to claim 1, wherein a bandwidth range of the upstream communication path is 5 MHz˜85 MHz, and the upstream communication path comprises:
a first power amplifier electrically connected to the second modulation and demodulation unit, and configured for adjusting a power of the upstream signal sent by the second modulation and demodulation unit;
a system-on-a-chip electrically connected to the first power amplifier, and configured for controlling a magnification of the first power amplifier;
a first low-pass filter electrically connected between the first power amplifier and the frequency divider, and configured for passing a low-frequency upstream signal with a bandwidth of 5 MHz˜85 MHz.