公开(公告)号：US11646801B1

公开(公告)日：2023-05-09

申请号：US18076414

申请日：2022-12-07

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Xiaojun Bi ,  Chaodi Sheng

IPC: H04B10/61 ,  H04B10/64

CPC classification number: H04B10/612 ,  H04B10/64

Abstract: An analog front-end module of an ultra-wideband optical receiver including a transimpedance amplifying unit and a distributed amplifier unit is provided. The transimpedance amplifying unit is configured to convert an externally-inputted current signal into a voltage signal, amplify the voltage signal, and then output a voltage-amplified signal.
The distributed amplifier unit includes an input transmission network, an input matching load, an output transmission network, an output matching load, and a plurality of gain units. The input transmission network is configured to receive the voltage-amplified signal and distribute the voltage-amplified signal to each gain unit for further amplification. The input matching load is configured to absorb the voltage-amplified signal reflected to the transimpedance amplifying unit.
The output transmission network is configured to superimpose amplified signals outputted from the gain units and output in combination. The output matching load is configured to absorb the amplified signals transmitted in an opposite direction.